Answer:
Explanation:
From the capillaries, blood passes into venules, then into veins to return to the heart. Arteries and arterioles have relatively thick muscular walls because blood pressure in them is high and because they must adjust their diameter to maintain blood pressure and to control blood flow.
It makes the lines and striations in the muscles more visible. So basically it just makes the muscle definition easier to see. Hope that helps!
Answer:
37.2 trillion cells
Explanation:
Each cell has their own structure and function. This allows them to duplicate its contents and chromosomes and split into 2 to produce another cell during mitosis
It can help you keep track of your fitness.
