Frankincense Oil Supports. Frankincense Oil, Olibanum Oil or Oil of Lebanon is a ancient essential oil used for spiritual connection and to support a healthy immune system. It is also a valuable ingredient in skin care products for healthy looking skin.
The total cross-sectional area of the capillaries is the greatest; that's why the blood velocity is the slowest through capillaries (this is very important since this is the site of nutrient exchange and you want blood to slow down to allow proper exchange rather than rush past).apillaries have the most area. Its pretty simple. Capillaries carry blood to every cell in the body. Obviously they have the biggest surface area.
Figure 4 compares vessel diameter, total cross-sectional area, average blood pressure, and blood velocity through the systemic vessels. Notice in parts (a) and (b) that the total cross-sectional area of the bodyâs capillary beds is far greater than any other type of vessel.