Functional Histology Of Blood Vessels

Question 1

The outer coat that consists of elastic tissue & collagen fibers (fibrous)

Answer 1

Tunica externa (adventitia)

Question 2

The muscle layer that consists of smooth muscles and elastic tissues

The smooth muscles are arranged ______ around the ______

Answer 2

Tunica media;
Circularly; lumen

Question 3

_______ of smooth muscles as occurs in sympathetic stimulation leads to _________

Relaxation of smooth muscle as occurs in sympathetic _________ leads to __________

Answer 3

Contraction; vasoconstriction
Inhibition; vasodilation

Question 4

__________ or vascular endothelium is composed of endothelial cell lining, which is a _______ ________ epithelium

Answer 4

Tunica intima; simple squamous

Question 5

4 important components to form the vascular wall

1. ________ cells
2. _________ tissue
3. ________ muscles
4. _________ tissues (collagen)

Answer 5

Endothelial, elastic, smooth, fibrous

Question 6

_______ junctions and other conenction keep the ________ cells to _____ to each other

Answer 6

Tight; endothelial; adhere

Question 7

In ________, vessel walls are formed only by a layer of endothelial cells present in basal lamina which makes them suitable for _____ of substances between ______ and _______

Answer 7

Capillaries; exchange; blood and tissue

Question 8

This determines the ability of vessel to ______ and has 2 types of elastic fibers

_______ - a protein made up of nonpolar _________

________ - fibril strands made up of _________

Answer 8

Elastic tissue; stretch
Elastin; amino acids (glycine,alanine,valine)
Microfibrils; glycoproteins

Question 9

Elastic fibers are _______ in aorta, large arteries and veins, _______ in arterioles and _______ in capillaries and venules

Answer 9

Abundant; less; absent

Question 10

__________ present in all vessels except the capillaries and ________

Answer 10

Smooth muscles; venules

Question 11

___________ primarily collagens type __ and ___ which is present in all vessels except _______. This prevents _______ of vessels and increase ___________

Answer 11

Fibrous tissue; I and II; capillaries
Distention; wall tension

Question 12

Aorta, medium artery, anteriole – capillary – venule, vein, vena cava

Answer 12

Elastic fibers madami sa aorta
Endothelial cell lang meron sa capillary

Diameter —> capillary <—– Diameter