Histo

Question 1

What is the function of the cardiac skeleton?

Answer 1

Attachment site for myocardium and valves - also electrical insulation between chambers

Question 2

What layer of the heart wall is a mesothelium that overlies dense irregular CT and adipose tissue (the visceral layer of the serous pericardium)

Answer 2

The epicardium

Question 2

What layer of the heart consist of subendothelial dense irregular CT w/ some smooth muscle cells?

Answer 2

The endocardium

Question 3

ID

Answer 3

Question 4

ID

Answer 4

Question 5

Answer 5

Question 6

What layer of an arterial vessel contains smooth muscle?

Answer 6

Tunica media - elastic and collagen fibers are produced by SM cells and interspersed

Question 7

What are vasa vasorum?

Answer 7

“vessels of the vessels”

Question 8

What joins vascular endothelial cells?

Answer 8

Tight junctions - zonula occludens

Possess Weibel-Palade bodies (contain vWF factor and P-selectin)

Question 9

Elastic arteries

Answer 9

i.e. the aorta and pulmonary arteries

aka conducting arteries

Question 10

Muscular arteries

Answer 10

aka distributing arteries

Downstream of elastic arteries (i.e. hepatic, renal, and mesenteric arteries)

Question 11

Resistance arteries

Answer 11

aka arterioles - located w/i organs or tissues

Question 12

What is shown in the red bracket?

Answer 12

The intimal cushion of the aorta’s tunic intima

Question 13

What is typically the thickest layer in veins?

Answer 13

The tunica adventitia

Where smooth muscle is located in veins

Question 14

What type of capillaries are found in the viscera and endocrine organs?

Answer 14

Fenestrate capillaries w/ diaphragms

Question 15

Where are fenestrated capillaries w/o diaphragms found?

Answer 15

Only in the renal glomerulus

Question 16

Most permeable type of capillary and location?

Answer 16

Sinusoidal capillaries can be found in the liver, spleen, and marrow

Question 17

What capillaries are associated w/ pericytes?

Answer 17

Continuous capillaries and postcapillary venules

Question 18

Answer 18

5/6 - tunica media and lumen of artery

7/8 - tunica adventitia and lumen of vein

Question 19

Answer 19

Elastin

Question 20

Answer 20

Muscular artery

Internal elastic lamina is characteristic of muscular/elastic arteries

Question 21

Answer 21

Purkinje fibers

Question 22

Answer 22

Venule

Neutrolphils are not normally in capillary/venule

Question 23

Dysfunction of what tissue is likely to play a key role in the early development of atherosclerosis?

Answer 23

Vascular endothelium

Question 24

Answer 24

A. Avascular dense irregular CT

Question 25

Answer 25

C. A nerve fiber

Question 26

Answer 26

Smooth muscle cells | Secretes collagen and elastic fibers

Question 27

Answer 27

C. Muscular artery

Question 28

Answer 28

A. Arteriole | Presence of internal elastic lamina and smooth muscle layers

Question 29

Answer 29

E. Small vein

Question 30

Answer 30

E. Smooth muscle ## Footnote In the largest veins - bundles of smooth muscle run paralell to the lumen within the tunic adventitia

Question 31

Answer 31

A. Continuous endothelial cells w/ a continuous basal lamina ## Footnote Continuous endothelial w/ continuous basal lamina - BBB, CT, muscle, and lungs

Question 32

Answer 32

E. Superficial veins

Question 33

Answer 33

Arrow pointing at tight junction (zonula occludens) of a capillary

Question 34

Answer 34

Diaphragm of fenestrated capillary