Why is the wall of an artery thicker than a vein?
More smooth muscle in the tunica media
More collagen fibers in the tunica externa
Less elastic fibers in the tunica intima
Which statement explains why we calculate mean arterial pressure (MAP)
Veins receive a constant flow of pressure from the capillaries
Red blood cells can only move through single file
Arteries contain less elastic fibers compared to veins
Arteries do not experience a constant pressure, rather they experience different pressures during systole and diastole of the heart
As blood flows from arteries into veins, which statement is true?
pressure reaches its maximum
pressure decreases
flow becomes more turbulent
viscosity of blood changes
Which statement explains the importance of the internal and external elastic membranes in artery walls?
To change diameter when a person becomes stressed
To inform the brain when blood pressure it elevated
To receive a pulsatile (wave-like) blood flow from the heart
