Search BSB Education BSB lectures Biology 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
Want to Keep Earth Beautiful?

Future living

Our Earth - - Save Earth

Life on Earth - - Mammals

BSB Philosophy

About BSB - - Contact BSB Bear Springs Blossom news are global news. News that are updated, accurate, not manipulated, just the latest news. World news because we all need to live on this one planet, international news with conservation news headlines. Conservation of Earth is only possible with an updated nature education. Nature conservation to protect the future of humans is our goal. BSB Earth news provide information to update your conservation education which can reduce the impact of climate change, can give people a happier life, can people give a more secure future
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, 'lub' and dub, are the ventricles contracting and the valves closing
Inside our chest lies the heart
and our lungs connected with arteries and veins
Care for Earth to have a safe future
Care for Earth = Care for Humans
Earth is changing

A Human Inside

What we all need to live...
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 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
A very small artery, just big
enough for the red blood cells.
Inside the arteries flows blood
from the heart full of oxygen

Human Heart - - Brain - Skeleton - Blood

pH level of body - Human Health - Biodiversity

Look inside the human body, many organs have to work together
Gastrointestinal tract
The gastrointestinal tract forms an important part of the immune system.
That's were our food goes, where it is digested, so nutrients and energy can be extracted. The rest will leave the body as feces and urine.
Our small intestine starts at the 'duodenum', just behind the stomach, and about 25 cm long.
I we would measure how much space is in the 'mucosa' we would get about 30 m2.
This area has to absorb carbohydrates, proteins, lipids, and vitamins and deliver them into our blood. The midsection of the small intestine is called Jejunum, which is about 2.5 m long. In this part sugars, amino acids, and fatty acids are absorbed and delivered to the bloodstream. The third part of our small intestines is the 'Ileum', which is about 3 m long. Vitamin B12, bile acids, and remaining nutrients are absorbed and delivered to our blood.

Than there are the large intestine, or colon.
The different parts are named cecum, the appendix, rectum, and anal canal.
The appendix is build as a blind-ended tube and connected to the cecum, a pouch-like structure of the colon. There is the junction of the small and the large intestines.
The rectum 'Latin rectum intestinum', is the final straight portion of the large intestine, and about 12 cm long, followed by the anal canal which is about 4 cm long.

Look how big our lungs are, inside the human body are a lot of connections needed to work together. Lungs take the oxygen out of the air and they produce blood
Our lungs - we need them to get our oxygen!

Lets move up to the head:
There our ears are located, but we see only a small part of them, most is inside our head.
Would you have thought that the graphic below shows all the parts of an ear?
Did you know that our ears are the only place in the human body where we have crystals?
Look how many parts belong to the human ear, inside the human body are a lot of connections needed to work together

Here is another view:
Look how many parts belong to the human ear, inside the human body are a lot of connections needed to work together
That is the way we can hear, sometimes we even listen...
All mammals use their ears to hear and to get their balance.
There are three parts:
the outer ear
the middle ear
the inner ear
What we can see is the 'pinna' and the 'ear canal'.
What we cannot see is the inner ear
That why we put the graphic there showing the otolith organs, the utricle and saccule, and the semicircular canals. All part of the vestibular system, as well as the cochlea of the auditory system.

Our ears will not work without a good blood supply
A closeup of a human air growing from inside to outside, see hair root, hair follicle, hair bulb
Hair a growing from inside to outside, sometimes out of the ears.
Some of us have to many hairs, others not enough...

Our hair will not work without a good blood supply:
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 ...

human kidneys inside the body
look at this human kidney

A healthy body 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
Why ....

Why we see a rainbow?

Where does water comes from?

Biodiversity essential for life

Why I am the only bear in the TX Hill Country?

Why mushrooms look so different?

Why green leaves turn red in fall?

Why recycling helps humans?

Why air pollution makes you sick?

Why Wind energy is renewable energy?

Why is CO2 a good and a bad gas?

Why mountains + volcanoes exist?

Why are whales no fish?

How is climate change affecting our life?

How does a sustainable life style change the future?

How butterflies can color?

How can You get a better gas mileage?

How does pollution harm humans and animals?

Air Pollution makes you sick

How important is the Water-cycle?

Water Facts

Water Data

About Water

Why Earth has water

Water testing

Water Filter

Water pH



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


How renewable energy works?

Oceans affect all life on Earth

How do corals grow?

Oceans currents change our food supply?

Earth News

Conserve Earth

Conserve Life Global Issues

Conservation of nat.Resources

Conservation of glaciers

Fossil Fuels

Conservation of Coral reefs

Nature Conservation

Water Conservation

Riparian Conservation

Energy conservation

Cap and Trade

Conservation + Solar


Soil Conservation

Grass Conservation


Plant Conservation

Butterfly Conservation

Endangered Species

Conservation of Biodiversity

Conservation through education

Endangered ?

Nature Preserve

Mulch conserves soil


Our sun

Our Moon

Our Earth

Earth's solar system

Geology of Earth Geology

Element table

Earth Oceans


How life works









PH scale


Life changes Nature Quotes Photosynthesis Thoughts Earth's continents

Our Future? Earth's Longest Rivers Water
Learn more about our Solar system - - our planets

Earth's speed

Earth's largest countries?

Earth's largest population?

Earth's highest mountains?

Want to get a glimpse of our Lecture about Earth?
Trees for earth - - Life on Earth - - Bacteria

The Gulf stream - China's Longest Rivers

Quiz Earth Oceans - - Quiz Superlatives

Hear and feel the wonders of Earth

Spain offers little to inform people how to keep earth beautiful - - - Indonesia cuts down a lot of trees. Missing nature conservation education leads to deforestation, water contamination, erosion problems because of deforestation, endangering marine life and humans - - - China has a growing population, more energy, more food, nature conservation education is very low on the to do list - - - India is a country full of potential. With a better education system and less corruption India could become number 1 in Asia - - - German schools offer conservation education, but a lot of people are too busy to learn new things
Bear Springs Blossom Nature Conservation has a great mission:
Information + Education for all who are interested in knowledge.
Marianne Bonenberger director of education BSB
Peter Bonenberger president BSB

are offering this knowledge online and with lectures.
BSB is an international charitable nonprofit-Organization 501(c)(3)

Think about and see how wonderful our Earth was created..
Learn to understand = having a better life!
Pollution, a bod threat to mankind. Affordable conservation education on your computer with Science education + training courses online, on the internet: Pollution of water, air, soil, oceans; all ingredients are more or less polluted. BSB connects environmental pollution with problems with a polluted food supply, endangered health, with less happiness - - - BSB education economy: Definition of Sustainability: capacity of maintaining certain processes. International sustainability: connection of biological + human systems. Ecologically, sustainability or green living, going green, sustainable lifestyle: ability of an ecosystem to maintain ecological processes, functions, biodiversity + productivity into the future. Sustainability effects life on Earth, different levels of biological systems, wetlands, prairies + forests. International Eco-friendly living, sustainable cities, international sustainable agriculture, sustainable architecture + development. Sustainable research achieves sustainable environments - - - Nature education online by Peter Bonenberger + Marianne Bonenberger, founders of the international charitable nonprofit Bear Springs Blossom Nature Conservation: photos of nature can help to understand life on Earth, to see how nature works, to have a better life
Photos of Nature

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.