Answer:
a. True
Explanation:
Endothelial cells
These cells are found in all the parts of the circulatory system , these are about a cell thick , and composes a wall known as the edothelium , which lines all the blood vessels , i.e. , the arterioles , veins , capillaries , arteries , venules .
Beneath the endothelial cells , there is a layer of smooth muscle cells .
The answer is oxygen I think
Answer:
If your amputated finger can be saved, you may need microsurgery. Your doctor will sew together the nerves, blood vessels, and tendons inside your finger. This helps to keep your finger alive and heal well after it's reattached.
Explanation:
does this help? :)
Answer:
e
Explanation:
opens up air way makes lungs syronger
Answer:
La tráquea (del griego τραχυς trakhys; "áspero, rugoso") es un órgano del aparato respiratorio de carácter cartilaginoso y membranoso que va desde la laringe a los bronquios. Su función es brindar una vía abierta al aire inhalado y exhalado.
Explanation: