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Why substances can only enter and leave the blood in the capillaries?
Wiki User
∙ 13y ago
Capillaries are very thin and therefore allow the substances to be diffused out of the thin layer of vein/artery. They are also very small and allow for a smaller amount of blood cells to be transported at one which helps to slow them down (also they are further away from heart) and deposit their substances to each cell.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoCapillaries have thinner walls to facilitate easy diffusion of substances and exchange of nutrients.
Wiki User
∙ 10y agoYes, though the substances will mainly be oxygen and Carbon dioxide.
Wiki User
∙ 13y agoBlood and Oxygen
Wiki User
∙ 11y agocaussee
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What kind of blood vessels allow substances to enter and leave the blood easily around the cells?
Capillaries. they have such thin walls that substances can easily diffuse through them.
State two substances that pass into the blood?
Two substances that pass into the blood include oxygen and carbon dioxide. The blood carries fresh oxygen to the cells and tissues and removes waste materials.
Where does oxygen enter the blood and carbon dioxide leave the blood?
Oxygen must enter our blood and Carbon Dioxide must leave the blood through our lungs. They do so by diffusion between the cappillaries.
How long is blood in lung capillaries in contact with air?
Blood in the capillaries are never in direct contact with air. Blood in contact with air is called bleeding. Oxygen, carbon dioxide (and other gases) diffuse across the alveolar and capillary walls to enter the blood stream (and leave).
How does gases enter and leave capillaries?
Simple diffusion.
Where in the circulatory cyctem does nutrients enter and wastes leave the tissues?
The capillaries are the site in the circulatory system where nutrients enter and wastes leave the tissues. The thin walls of the capillaries facilitate this diffusion.
How does blood leave the kidney?
Goes into the capillaries then to the vein
Why substances enter and leave the blood stream through the walls and capilliaries amd not arteries and veins?
Oxegen and Carbon dioxide
How does the cleaned blood leave the kidney?
Goes into the capillaries then to the vein
Why sustances enter and leave the blood stream through the walls and capillaries and not arteries and veins?
u havin' problem with biology requirement? ey.. ? sophomore..? altair or rigel? ;]
What are the organs of the pulmonary system where gas exchange occurs?
Gasses are exchanged mostly through the cells
How does the substances for photosynthesis enter and leave the plant?
Leaves
