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Question 1

What is the structure of capiliaries?

Answer 1

Tunica intima

Simple squamos epithelium + Basement membrane

Question 2

What are analogous arteries, veins, lymphatic vessels, and nerves?

Answer 2

vessels that are parallel and next to each other in the body.

Question 3

How do analogus arteries, veins, and lymphatic vessels flow?

Answer 3

Arteries: Towards the organs (away from the heart)

Veins: towards the heart

Capiliaries: towards the heart (but not into it)

Question 4

blood vessels are classified based on what?

Answer 4

Tunica media

Number of smooth muscle layers

Number of elastic laminae

Question 5

What is the identification of large elastic arteries?

Answer 5

many fenestrated elastin lamellae

Question 6

What is the identification of medium muscular arteries?

Answer 6

2 fenestrated elastin lamellae

Question 7

What is the identification of small muscular arteries?

Answer 7

1 fenestrated elastin lamellae

Question 8

What are the types of tissues in tunica media

Answer 8

Smooth muscle (circular) layers
Fenestrated (window) elastic laminae layers
Collagen fibers

Question 9

What are the cells in the tunica intima?

Answer 9

Cells: Endothelium and fibroblasts (bc the blood blasts it)

Question 10

What are the cells in tunica media?

Answer 10

Smooth muscle cells

Question 11

What are the 2 functions of smooth muscles in tunica media

Answer 11

1. Push blood
2. make collagen and elastin (bc there are no fibroblasts)

Question 12

What are the tissues of the tunica externa of the blood vessels?

Answer 12

Connective tissue (bc their function is to connect)

Fibroblast, collagen, and ground substance (like bondo to connect it all togther)

Question 13

What are the cells of the tunica externa in blood vessels?

Answer 13

Fibroblasts

Question 14

What are the cells of the tunica intima in blood vessels?

Answer 14

Fibroblasts and endothelium

Question 15

What does the cross section of endothelium look like?

Answer 15

round nuclei

Bc Endo

add photo

Question 16

What is the identification of large/elastic/conducting under a microscope?

Answer 16

Lots of fenestrated elastic lamina (makes sense bc it has to withstand the high pressure first)

Less smooth muscle

Question 17

What is the structure of large/conducting/elastic arteries?

Answer 17

Tunica Intima: Endothelium + Subendothelial CT + Bm

Tunica media:
70-40 Elastic lamina (black)
40- 30 smooth muscle fibers (red)

Tunica externa
fibroblasts + macrophage (bc it is close to the heart so has to protect it)

Collagen

neurovascular bundle:

vasa vasorum (arterioles-capillaries-venules )

nervi vasorum (sympathetic)