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- Carbron Dioxide/Oygen Exchange
- The oxygen gas molecules enter the alveoli (air sacs) in the lungs. Carbon dioxide leaves the blood in the capillaries and enters the sacs, changing form from solution to gas, while oxygen moves into the capillaries, changing form from gas to solution.
Most of the oxgyen is picked up by the hemoglobin in red blood cells for transport. The blood carries the oxygenated blood through the pulmonary arteries to the heart.
As the heart beats, the oxygenated blood flows out of the heart through the aorta and into arteries throughout the body.
The oxygenated blood flows from large arteries to smaller arterioles and into capillaries that nourish cells of the tissues.
Oxygen leaves the capillaries and flows into the cells. At the same time, carbon dioxide leaves the cells and enters the venous capillaries to return to the lungs.
Oxygen provides the fuel that allows the cells to carry out their functions.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe diaphragm. It decreases the pressure of the lungs thus allowing air to flow into the lungs. It also does the reverse when expiring (breathing out).
Wiki User
∙ 12y agoThe diaphram which is a sheet of internal skeletal muscle that extends across the bottom of the ribcage. The muscle expands and contracts causing the lungs to fill and empty.
Wiki User
∙ 13y agoTrachea
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What are organs that expand to fill with air?
do you mean fills with air? if so then its the lungs
Are the lungs muscular or elastic?
It is the natural elasticity of the lungs that allows us to exhale.
What Organs that expand to fill with air?
its is the lungs come to us and get your answer
What is the breathing organ of whales?
Lungs - they breathe air like us.
What muscles help you breathe?
The main muscle that helps us to breathe is the diaphragm. When it contracts it creates a lower pressure area inside the lungs than is in the outside air, and this basically sucks air into the lungs. The lungs exhale through their own natural recoil.
How muscles help us breathe?
The main muscle that helps us to breathe is the diaphragm. When it contracts it creates a lower pressure area inside the lungs than is in the outside air, and this basically sucks air into the lungs. The lungs exhale through their own natural recoil.
How does air helps to purify the air?
FOREST ARE THE LUNGS OF THE EARTH ,IT RELEASES OXYGEN to keep us healthy.
Why is a 4 chambered heart useful?
it allows us to pump blood throughout our bodies faster and allows the transfer of oxygen to and from the lungs more efficiently
What is an analogy for soil?
soil and water that covers the earth is like a placenta - a film that allows us to draw life from the air, earth and sun. or a matrix - something within which something else originates or develops
What part of the body helps us breathe in?
The diaphragm relaxes to help squeeze the air out of your lungs. When the diaphragm contracts, it flattens and pulls air into your lungs. When it relaxes into its dome-shaped position, air is pushed out.
Air is forced into the lungs by the contraction of the?
Actually, air isn't forced into the lungs my the contraction of any muscle, but by the relaxation of the Diaphragm, along with the Intercostalis muscles on the ribs and the smooth muscle on the lungs. When your diaphragm contracts, it pushes air out of your lungs. When it relaxes, air is drawn in to the lungs. The intercostalis muscles also help move the ribs when the lungs move as your breath. There is one set on the ribs and one set in between each rib.Hope this helps!
How are the frogs air sacs similar and different from human lungs?
human lungs help us breath in the air. while frog lungs hold air in so they can swim longer than humans. frogs can breathe through their lungs. we can't
