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Micro Physiology > Lecture 19-20- Circulatory System > Flashcards

Lecture 19-20- Circulatory System Flashcards

1
Q

Three layers of blood vessels?

A

Tunica intima
Tunica media
Tunica adventitia

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2
Q

What composes the tunica intima?

A

Endothelial cells

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3
Q

What separates the tunica intima from the tunica media?

A

Internal elastic lamina

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4
Q

What composes the tunica media?

A

smooth muscle +/- elastin

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5
Q

What composes the tunica adventitia?

A

Connective tissue

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6
Q

What layer has the vasa vasorum and nervi vasorum?

A

Tunica adventitia

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7
Q

What are mineralized chunks within the tunica intima of horses?

A

Intimal bodies

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8
Q

Three types of arteries

A

Elastic
Muscular
Arterioles

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9
Q

How many layers of smooth muscle in arterioles?

A

Three

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10
Q

What is the location of oxygen and nutrient exchange?

A

Capillary

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11
Q

Three types of capillaries

A

Continuous
Fenestrated
Discontinuous

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12
Q

Where are continuous capillaries found and what do they do?

A

Gas exchange in most tissue (muscle, brain, lungs)

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13
Q

Where are fenestrated capillaries found and what do they look like?

A

Complete basement lining but with holes in the lining. Found in intestine, glands, glomeruli

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14
Q

Where are discontinuous capillaries located and what do they do?

A

Allow cells to penetrate wholly through the wall. Found in liver and sinusoids (spleen, lymph nodes, marrow)

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15
Q

How can WBC escape circulation from any capillary?

A

Infammation

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16
Q

Types of veins

A

Venule
Medium-sized veins
Large veins

17
Q

What do venules lack

A

Tunica media

18
Q

What are found within large veins

A

Venous valves

19
Q

Which large veins do not have valves?

A

Hepatic portal vein and vena cava

20
Q

What are the layers of the heart?

A

Inner, muscular, and outer (like arteries)

Endocardium, myocardium, epicardium

21
Q

What lines the endocardium

A

Endothelial cells

22
Q

Where are hemangiosarcomas most likely to occur?

A

Right atrium

23
Q

What layer of the heart are Purkinje fibers located?

A

Myocardium

24
Q

Fibrous rings that hold the shape of the valves of the heart

A

Cardiac skeleton

25
Q

What cells are found in the epicardium?

A

Mesothelial cells

26
Q

Where is the pericardial sac connected?

A

The base of the heart

27
Q

What lines the pericardial sac on both sides?

A

mesothelial cells

28
Q

What does the pericardial sac produce on the cardiac side? the outside?

A

Pericardial fluid
Pleural fluid

29
Q

What, besides veins, has valves?

A

Lymphatic vessels

30
Q

What are lymphatic vessels lined by?

A

endothelium

31
Q

What is the structure that is a collection of lymphatic vessels that dump into a large vein near the heart?

A

Thoracic duct

Micro Physiology (35 decks)

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