Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation? a. tunica externa b. basement membrane c. tunica media d. tunica intima 4 points

C) tunica media  

Explanation:

The middle tunic of an artery is an intermediate layer consisting of elastic fibers, collagen and smooth muscle tissue. It also features an internal limiting elastic membrane separating it from the next layer. The medium tunic is responsible for maintaining blood pressure and continuous blood circulation.

The elasticity of the arteries allows the blood flow inside to remain constant. The loss of elasticity of the middle tunic causes its wall to sag and dilate, causing the aneurysm. This can cause the artery to rupture and lead to fatal bleeding.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.