BSB directory BSB Education BSB lectures BSB Mission Patient Earth Germany needs better conservation education. educational websites from Germany offer information on the human body and its heart
Logo of Bear Springs Blossom Nature Conservation, international charitable nonprofit organization providing nature conservation education to all countries on Earth Signature of Bear Springs Blossom Nature Conservation, international charitable nonprofit organization BSB Conservation education online: The heart is one most important organ of a mammals. We need our heart to work constantly, or we have a heart problem. BSB-research published in these news helps to keep Nature beautiful + to secure our future to have a better life
Why to Keep Earth Beautiful
How to Keep Earth Beautiful


About Us - - - Contact Us - BSB News

Human Heart

an important big muscle
Bear Springs Blossom BSB Science Biology - environmental education online for children and adults, life on earth will all its variations
Search BSB
On this web page
we just try to give
you a little glimpse.
Send us an email to learn more!
Conservation Nature education online Biology: the human heart is an important part of human body. The heart, like other body parts, needs oxygen in order to grow and develop properly. During childhood, the body's years of rapid growth, the need for oxygen is greatest. The heart's rate of pumping oxygen-rich blood is fastest in infancy, about 120 beats per minute. As the child grows, the heart rate slows. A seven year old child's heart beats about 90 times per minute. By the age of 18, the heart rate has stabilized to about 70 beats per minute.By adulthood, the heart is fully developed. Throughout life, the heart needs only to be maintained and kept healthy in order to function. While the circulatory system is busy providing oxygen and nourishment to every cell of the body, let's not forget that the heart, which works hardest of all, needs nourishment, too. Coronary circulation refers to the movement of blood through the tissues of the heart. The circulation of blood through the heart is just one part of the overall circulatory system
Human Inside
Human brain - Human skeleton - Human blood

pH level of body - Human Health

Biodiversity - - Biology

3000 years ago, a Chinese doctor wrote down: ".. the heart regulates all blood in the human body
The blood never stops circulating ..."
This knowledge was forgotten for 1500 years.
The English doctor William Harvey published 1628 "How the heart and the blood moves"
An accident happens, you got a cut - a red sap drops out:
Blood - a fluid that is pumped by your heart through the vessels of your body!
blood circles through the body of every mammal. The circulatory system is an organ system that passes nutrients, amino acids, electrolytes and lymph, gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis. The medium of transport for the nutrients, etc are the blood cells. This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which distributes lymph. Humans have a closed cardiovascular system, our blood normally doesn't leaves our body, always runs in our arteries, veins and capillaries. The lymphatic system, also driven by our heart is an open system. Blood and lymph run through our circulatory system. The blood, heart, and blood vessels form the cardiovascular system. The lymph, lymph nodes, and lymph vessels form the lymphatic system. When we talk about the circulatory system we talk about two systems: The cardiovascular system and the lymphatic system
The heart pumps blood through all of our arteries and veins
Blood circles through our body, through the bodies of all mammals.

Environmental education online by Bear Springs blossom Nature conservation: blood vessels in the human body. Veins are similar to arteries but, because they transport blood at a lower pressure, they are not as strong as arteries. Like arteries, veins have three layers: an outer layer of tissue, muscle in the middle, and a smooth inner layer of epithelial cells. However, the layers are thinner, containing less tissue. Veins receive blood from the capillaries after the exchange of oxygen and carbon dioxide has taken place. Therefore, the veins transport waste-rich blood back to the lungs and heart. It is important that the waste-rich blood keeps moving in the proper direction and not be allowed to flow backward. This is accomplished by valves that are located inside the veins. The valves are like gates that only allow traffic to move in one direction. The vein valves are necessary to keep blood flowing toward the heart, but they are also necessary to allow blood to flow against the force of gravity. For example, blood that is returning to the heart from the foot has to be able to flow up the leg. Generally, the force of gravity would discourage that from happening. The vein valves, however, provide footholds for the blood as it climbs its way up. Blood that flows up to the brain faces the same problem. If the blood is having a hard time climbing up, you will feel light-headed and possibly even faint. Fainting is your brain's natural request for more oxygen-rich blood. When you faint, your head comes down to the same level as your heart, making it easy for the blood to quickly reach the brain.Because it lacks oxygen, the waste-rich blood that flows through the veins has a deep red color, almost like maroon. Because the walls of the veins are rather thin, the waste-rich blood is visible through the skin on some parts of the body. Look at your wrist, or hands, or ankles. You can probably see your veins carrying your blood back to your heart. Your skin refracts light, though, so that deep red color actually appears a little blue from outside the skin
With this circulatory system our body gets its nutrients,
gets hormones, liquids. Repair cells are transported to damages,
? oxygen filled red blood cells bring energy to muscles,
and a big part to our brain!


In red you see the arteries transporting oxygen,
in blue you see veins, blood with low amounts of oxygen.
moving back towards the heart, than into the lungs.

Look at all the arteries and veins!
Imagine 60000 miles of bigger and smaller pipes
in every human body!
That is about 2 times around our globe ...
our muscle engine heart has to work 24/7
every day of the year
every day as long as we live!
science biology education: human heart, a wonderful machine, working from the beginning in mothers womb, to the end when we die. The circulatory system is a network of flexible tubes through which blood flows as it carries oxygen and nutrients to all parts of the body. It includes the heart, lungs, arteries, arterioles (small arteries) and capillaries (minute blood vessels). It also includes venules (small veins) and veins, the blood vessels through which blood flows as it returns to the heart. If all these vessels were laid end-to-end, they would extend for about 60,000 miles--far enough to encircle the earth more than twice.
If we would drain all the blood out of an adult human body
about 5 liters = 5.3 US-quarts of blood would be in our bucket
video graphic how the human heart pumps. video clip - work with us to secure Nature, to keep humans on earth alive
click to see video clip how a human heart moves blood

Pulmonary circulation is the movement of blood from the heart, to the lungs, and back to the heart again. This is just one phase of the overall circulatory system. The veins bring waste-rich blood back to the heart, entering the right atrium throughout two large veins called vena cavae. The right atrium fills with the waste-rich blood and then contracts, pushing the blood through a one-way valve into the right ventricle. The right ventricle fills and then contracts, pushing the blood into the pulmonary artery which leads to the lungs. In the lung capillaries, the exchange of carbon dioxide and oxygen takes place. The fresh, oxygen-rich blood enters the pulmonary veins and then returns to the heart, re-entering through the left atrium. The oxygen-rich blood then passes through a one-way valve into the left ventricle where it will exit the heart through the main artery, called the aorta. The left ventricle's contraction forces the blood into the aorta and the blood begins its journey throughout the body. The one-way valves are important for preventing any backward flow of blood. The circulatory system is a network of one-way streets. If blood started flowing the wrong way, the blood gases (oxygen and carbon dioxide) might mix, causing a serious threat to your body. You can use a stethoscope to hear pulmonary circulation. The two sounds you hear,
The most important connection:
The heart pumps blood to the lungs
to enrich it with oxygen,
and to get rid of the carbon dioxide CO2

Biology education online: human body education: the human heart has two circles. one pumps the blood through our body, the other pumps blood into our lungs to acquire new oxygen, releasing carbon dioxide
That's the way blood ingredients are pumped through our blood vessels
Our heart transports blood enriched with oxygen and other ingredients
Blood brings nutrients to every cell in our body.
Blood takes the oxygen while been pumped through our lungs.

Conservation education Human environment: heart is the engine pumping blood through all our body. Blood is transported by the heart in all mammals. The heart you see drawn on the average Valentine is only a rough representation of the actual structure of the heart. Your heart is actually shaped more like an upside-down pear. The human heart is primarily a shell. There are four cavities, or open spaces, inside the heart that fill with blood. Two of these cavities are called atria. The other two are called ventricles. The two atria form the curved top of the heart. The ventricles meet at the bottom of the heart to form a pointed base which points toward the left side of your chest. The left ventricle contracts most forcefully, so you can best feel your heart pumping on the left side of your chest. The left side of the heart houses one atrium and one ventricle. The right side of the heart houses the others. A wall, called the septum, separates the right and left sides of the heart. A valve connects each atrium to the ventricle below it. The mitral valve connects the left atrium with the left ventricle. The tricuspid valve connects the right atrium with the right ventricle. The top of the heart connects to a few large blood vessels. The largest of these is the aorta, or main artery, which carries nutrient-rich blood away from the heart. Another important vessel is the pulmonary artery which connects the heart with the lungs as part of the pulmonary circulation system. The two largest veins that carry blood into the heart are the superior vena cava and the inferior vena cava. They are called -vena cava- because they are the heart's veins. The superior is located near the top of the heart. The inferior is located beneath the superior. The heart's structure makes it an efficient, never-ceasing pump. From the moment of development through the moment of death, the heart pumps. The heart, therefore, has to be strong. The average heart's muscle, called cardiac muscle, contracts and relaxes about 70 to 80 times per minute without you ever having to think about it. As the cardiac muscle contracts it pushes blood through the chambers and into the vessels. Nerves connected to the heart regulate the speed with which the muscle contracts. When you run, your heart pumps more quickly. When you sleep, your heart pumps more slowly. Considering how much work it has to do, the heart is surprisingly small. The average adult heart is about the size of a clenched fist and weighs about 11 ounces 310 grams. Located in the middle of the chest behind the breastbone, between the lungs, the heart rests in a moistened chamber called the pericardial cavity which is surrounded by the ribcage. The diaphragm, a tough layer of muscle, lies below. As a result, the heart is well protected. To monitor the heart, scientists can use x-ray or scanning technology to get a picture. To really explore the heart, scientists have to perform surgery. Heart surgery is very risky because the heart's pumping action is so critical for survival. If the heart stops pumping, the body cannot survive. Before beginning heart surgery, doctors connect the patient to a machine that pumps the blood for the heart. Only then is it safe for the doctor to stop the heart in order to operate
Our heart - a strong muscle around a shell, pumping blood, quart by quart, as long as we live ...
Our heart has four cavities that fill with blood.
Doctors call these two cavities atria, the
other two cavities are named ventricles.
The two atria form the curved top of the heart.
The left ventricle contracts most forcefully!
Between the two halves is a wall, called the septum,
separating the right and left sides of the heart.
For a connection the mitral valve and the
aortic valve, normally a tricuspid, what means
with three leaflets, valve opens and closes.
On the top of our heart large blood vessels start the transport.
The largest is the aorta, also called main artery,
which carries nutrient-rich blood away from the heart.
The other very important vessel is the pulmonary artery
which connects the heart with the lungs
as part of the pulmonary circulation system.

Conservation education Human health: Science graphic of a human arteries. Tubular Circulation. In a general sense, a vessel is defined as a hollow utensil for carrying something: a cup, a bucket, a tube. Blood vessels, then, are hollow utensils for carrying blood. Located throughout your body, your blood vessels are hollow tubes that circulate your blood. There are three varieties of blood vessels: arteries, veins, and capillaries. During blood circulation, the arteries carry blood away from the heart. The capillaries connect the arteries to veins. Finally, the veins carry the blood back to the heart. If you took all of the blood vessels out of an average child, and laid them out in one line, the line would be over 60,000 miles long! An adult's vessels would be closer to 100,000 miles long! Besides circulating blood, the blood vessels provide two important means of measuring vital health statistics: pulse and blood pressure. We measure heart rate, or pulse, by touching an artery. The rhythmic contraction of the artery keeps pace with the beat of the heart. Since an artery is near the surface of the skin, while the heart is deeply protected, we can easily touch the artery and get an accurate measure of the heart's pulse. When we measure blood pressure, we use the blood flowing through the arteries because it has a higher pressure than the blood in the veins. Your blood pressure is measured using two numbers. The first number, which is higher, is taken when the heart beats during the systole phase. The second number is taken when the heart relaxes during the diastole phase. Those two numbers stand for millimeters. A column of mercury rises and falls with the beat of the heart. The height of the column is measured in millimeters. Normal blood pressure ranges from 110 to 150 millimeters (as the heart beats) over 60 to 80 millimeters (as the heart relaxes). It is normal for your blood pressure to increase when you are exercising and to decrease when you are sleeping. If your blood pressure stays too high or too low, however, you may be at risk of heart disease. The English word veins comes from the Latin word vena
Here you see a very small artery, just big
enough for the red blood cells.
Inside the arteries blood is transported
away from the heart full of oxygen
enriched later with nutrients, hormones

A healthy heart is very important for our life!

What can we do to keep our bodies healthy?
Eat in balance, drink in balance, don't smoke,
don't use illegal drugs!
Train your brain as you train your body!
Enjoy life - enjoy Nature!
We have to protect Nature to protect our future!
Nature Conservation protects Nature = humans + animals + plants = Earth!
International charitable NonProfit Bear Springs Blossom Nature Conservation 501(c)(3)

good nature conservation needs updated nature education

Copyright
Bear Springs Blossom Nature Conservation
International charitable nonprofit org. 501(c)(3)
BSBNCG POB 63295 Pipe Creek 78063 TX USA
edu@keepearthbeautiful.org

link to facebookPeter Bonenberger

Our Earth - - Why is Earth sick? - - Our Future??

Earth's solar system - - Our Moon - - Earth's Atmosphere

About Life on Earth - - The Gulf stream

Quiz Earth Oceans - - Nature Quotes - - Bacteria uncountable numbers

Hear and feel the wonders of Earth

BSB volunteers try to be as accurate as possible, but we are not responsible for broken or false links or misinterpretation
Privacy Policy: Your privacy is very important to us.
We don't collect information from you.
BSB was founded 2002 +


Educators Peter + Marianne Bonenberger, volunteers, lecturers, presenters of Nature related topics giving a lecture. Environmental education for children + adults
Affordable International Conservation education online is part of BSB worldwide conservation education program with environmental studies on nature, online courses on greenhouse gases, nature protection, nature education, climate change, geography, topography: How does Nature work? Why do humans use so much energy? Why records are broken, record wildfires, droughts, heat, water shortages, floods. Definition Nature education. Learn online how to take action, how to reduce greenhouse gas. Online courses explain how to solve global problems like climate change, air pollution, global warming, water contamination, soil erosion. Good international online Nature education to understand nature, nature conservation knowledge prepares for coming environmental changes + challenges as climate changes, pollution raises

Philosophy
Famous Men
BSB members have free Nature education online courses. Science knowledge can be updated to nowadays knowledge levels in environmental science, biology, physics, chemistry with greenhouse gases, tips on how to conserve Nature with know-how. Facts about life help to avoid violent climate. Learn to reduce air pollution, greenhouse gases. Learn how photosynthesis works, what air quality means, read environmental studies on the human body, on the conservation of energy, forest destruction. International life is endangered by wrong doing. Eight spheres balance Earth for billions of years. Photosynthesis provides food supply for mammals, green chlorophyll to catch solar energy. Learn solutions to save Earth, reduce global temperatures. Greenhouse gases destroy plants, and help food plants to grow. Pollution can reduce photosynthesis, endangering life on Earth
Science Biology
Elements
Spheres
Conservation education on flora: to conserve trees, to plant new trees, to help a tree to grow, is one of the main tasks of a Master Conservationist. Why conservation education? Why is ethics responsibility so important? Why are the laws of nature still valid? Bear Springs Blossom Nature Conservation protects Nature providing conservation education, how fighting pollution, how efficient energy use betters our life. Environmentally friendly hydrogen fuel cells are green energy. Fuel cells lower air pollution, low greenhouse gases prevent droughts, floods, wildfires. Climate changed causes storms endangering life + well being of all life including humans. Nature conservation through science based Nature education saves money, makes happier healthier people. Goal: An educational website to protect humans now and in the future. Environmental solutions to keep Nature beautiful, conserve energy, lower pollution CO2, lower greenhouse gases methane, water body contamination to have a life with affordable food prices. BSB helps you to have a better life. Nature news for a better life. Mission: Conservation education. Peter Marianne Bonenberger give lectures, educational presentations to show why to protect Earth's Nature
Photosynthesis
Chlorophyll
BSB affordable Conservation nature education online: Interdisciplinary science education: water chemistry, water physics, natural water, international water conservation. update your education to have a better life with active conservation ideas
BSB Environmental website education: Distant science education online chemistry: air essential for life on Earth, air pollution, unhealthy air, understand international air pollution issues. Lectures presentation about greenhouse gases, about air chemistry, oxygen needed for life, carbon dioxide needed for photosynthesis
Affordable conservation education on your computer: Science education classes + training courses online, on the internet: Pollution, water, air, soil, oceans, all ingredients are over polluted, connect environmental pollution problems with changes in food supply
About Energy
BSB Online conservation education Science Physics: Learn clean energy facts. Solar Energy essential for life on Earth, fossil fuel energy production causes air pollution, definition of fossil fuels, air pollution making life unhealthy, endangering future, poisoning human brains
Fossil Fuels


Distant science education geography: Environmental education for children + adults with Earth maps, maps of Earth, map of Earth from space, rain-forest map, earth carbon sink, map earth conveyor belt, earth map weather stations, maps of Asia, maps of Texas, maps of United States, map of Europe. Nature conservation through updated nature education can save Earth

BSB nature education based online distance learning course geography: global life on Earth endangered by greenhouse gases. Education on global issues as declining World species, global biodiversity endangered, international air pollution + droughts + floods; reduced life support by food shortages, higher food prices. International climate change on Earth map. Global Nature facts explain global issues threatening all humans, animals, wildlife, plants. Knowledge how to keep Nature beautiful, to understand global issues, Nature education courses are an affordable solution backed up by pollution facts, water facts, recycling facts, energy facts, how life works. All major religions order to protect earth, not to destroy HIS creation
BSB Environmental website education: Distant science education online: Updated Nature education: Why Nature Conservation? Bear Springs Blossom Nature Conservation protects Nature to save Earth! Nature conservation through Nature education with the goal to protect humans is the only solution to keep Nature beautiful. Constantly updated knowledge in science, biology, physics, chemistry, geography

Our Earth

- Why Earth has continents?
- Why Earth has earthquakes?
Earth's Geology

Maps of Earth

All about Earth

Global Climate

Climate Change Solutions

Global Warming

Global Dimming

Earth Atmosphere

- Why is Earth sick?
Patient Earth

Save Earth

Life on Earth

Nitrogen

Earth Future

Global Issues

How Keep-Earth-Beautiful?

BSB Information on Earth:
United States has many shore lines,as have many continents on Earth. Science geography: an updated nature education shows you the big picture, informative speeches explain, provide understanding, giving you a better life
- Astonishing photos from Earth
Earth from Space

Earth's Moon

Earth's solar system

Earth's planets

Info about NASA

Earth's Change

Keep Earth clean

Earth's Oceans

Earth's population

Famous buildings

Glob. statistics

Solar Eclipse

Earth's Spheres



BSB Information on Water:
Water Facts

Water Data

About Water

Why Earth has water

Water testing

Water Filter

Water pH

Salinity

Hydrogen

The H in H2O

Water Pollution

Water life

Earth Oceans

Atlantic Ocean

Ocean acidification

PH scale

Water Pollution

Ocean currents

Gulf stream

Water life

Coral reefs

E coli

Watershed divide

Riparian Areas

Power from Water

Water conservation

Water Conservation/kids

How to save water

Ocean Quiz

Water Conservation/kids

Water + Energy

Water + Trees

Water journey 1

Thirsty for water

Water Drought article

Rainwater

Why Rainbows?
link to Youtube

link to facebook BSB

link to facebook Peter Bonenberger
Science Biology, Chemistry, Physics: water full of energy, necessary for life as we know it- update nature education shows you the big picture
- Why does all life on Earth depend on water?
- Why are the oceans salty?
- Why Water is a very special 'juice'?
- Humans can live without food for weeks, but
- without water we will die after 3 days.
- Why do Humans use huge amounts of water to produce electricity?
- Is salt-water more heavy?
- Why can water dissolve so many substances?
- Does water expand when it gets warmer?


Fair Use Notice
All material on 1000+ BSB web-pages is intended to advance understanding of the environmental, social, scientific, and economic issues of Nature conservation. We believe this constitutes a "fair use" of any copyrighted material as provided for in section 107 of the U.S. Copyright Law. In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit to those who have expressed an interest in receiving the included information for research and educational purposes. If you wish to use copyrighted material from our websites for purposes of your own that go beyond "fair use," you must obtain permission from the copyright owner. If you are the owner of copyrighted material(s) appearing on this site, and wish it to be removed, please contact us directly.