activity 1 anatomy of blood vessels
arteries and veins have three tunics (or layers) whereas the wall of a capillary is made up of a single layer consisting of the endothelium and a basement membrane. describe the composition of each tunic for arteries and veins.
vessel type arteries veins
tunica intima
tunica media
tunica externa

Question

Accepted Answer

# Brief Explanations:
Arteries and veins have three tunics. For the tunica intima, in arteries it has a thicker internal elastic lamina compared to veins. The tunica media in arteries is thicker with more smooth - muscle and elastic fibers to withstand high pressure, while in veins it is thinner. The tunica externa in veins is often thicker than in arteries as veins are more superficial and need protection.
# Answer:
| Vessel Type | Arteries | Veins |
|--|--|--|
| Tunica Intima | Endothelium, basement membrane, and a relatively thick internal elastic lamina | Endothelium, basement membrane, and a less prominent internal elastic lamina |
| Tunica Media | Thick layer with abundant smooth - muscle and elastic fibers to handle high blood pressure | Thinner layer with less smooth - muscle and elastic fibers |
| Tunica Externa | Thinner in general compared to veins in superficial areas; composed of connective tissue | Often thicker in superficial areas; composed of connective tissue |

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Answer:

Vessel Type	Arteries	Veins
Tunica Media	Thick layer with abundant smooth - muscle and elastic fibers to handle high blood pressure	Thinner layer with less smooth - muscle and elastic fibers
Tunica Externa	Thinner in general compared to veins in superficial areas; composed of connective tissue	Often thicker in superficial areas; composed of connective tissue