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Why don't substances enter or leave through the wall of arteries or veins?
Wiki User
∙ 13y ago
The vein and or arteries have a very think layer of skin and prevent the "substances" from leaving.
Wiki User
∙ 13y ago
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What does the blood leave the heart through?
the aorta Aorta, the largest artery in the human body.
What type of tissue is found in the walls of the arteries that leave the heart but not in the large veins that enter the heart?
elastic tissue, I had this question as part of my online assignment, I answered it and it was correct ;)
Where the renal artery ureter and the renal vein enter or leave the kidney is called?
Through the hilum
Do arteries return blood from the capillaries to the heart cells?
this question is all mixed up. you must understand that blood leave the heart and goes to the body by travelling through the arteries(except the pulmonary artery) then is distributed to individual cells by the arteries then goes back to the heart through the veins(except the pulmonary vein). so in the case of the heart cells, blood accesses the heart through the coronary artery, goes to the individual cardiac muscle cells by the capillaries and and then back to the hearth through to coronary vein.
What is true about heart valves?
They enforce a one-way blood flow through the heart, operate passively (no active contraction required), and separate atria from ventricles, and ventricles from the large arteries that leave them
Why substances enter and leave the blood stream through the walls and capilliaries amd not arteries and veins?
Oxegen and Carbon dioxide
Through which organelle do substances enter or leave a cell?
Substances pass through the plasma membrane, although ot is not technically an organelle.
What substances enter and leave the cells?
Proteins made on "bound" (attached) ribosomes leave through the cell membrane, and other proteins will enter the cell.
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.
How does the substances for photosynthesis enter and leave the plant?
Leaves
What cell main job is to control which substances enter and leave a plant cell.?
?
What must a substance pass through to enter or leave a cell?
If substances did not pass through cell membranes, then all single-celled and multicellular organisms would die.
The blood passing through the arteries?
Oxygenated blood flows from the lungs to the left atrium contractions (heart muscle) cause the blood to leave the atrium and enter the left ventricle. Further contraction causes the blood to leave the atrium and enter the aorta.
What type of tissue is found in the walls of the arteries that leave the heart but not enter the heart?
Smooth
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? ;]
The nuclear envelope regulates which substances enter and leave a cell?
False
What is the process by which substances leave the glomerulus and enter the glomerular capsule?
Filtration
