Blood Vessels Flashcards

1
Q

Carries blood throughout the body to supply oxygen and nutrients to tissues

A

Systemic circuit

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2
Q

Carries blood to the lungs for gas exchange

A

Pulmonary circuit

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3
Q

Carries blood away from heart

A

Artery

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4
Q

Arteries branch to form

A

Arterioles

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5
Q

Are the site of exchange

A

Capillaries

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6
Q

Carries blood back to the heart

A

Venules and veins

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7
Q

The hollow space blood flows through

A

Lumen

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8
Q

Smaller lumen and thicker walls to withstand high pressure

A

Arteries and arterioles

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9
Q

Have thinner walls and larger lumen and it is exposed to lower pressure

A

Veins and venules

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10
Q

Blood vessel walls are made up of layers called

A

Tunics

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11
Q

3 layers of blood vessel walls from superficial to deep

A

Tunica externa
Tunica media
Tunica intima

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12
Q

Composed of endothelium and basement membrane

A

Tunica intima

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13
Q

Made up of mainly smooth muscles

A

Tunica media

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14
Q

Composed mainly of collagen and elastic fibers

A

Tunica externa

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15
Q

Are blood vessels that carry blood away from the heart

A

Arteries

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16
Q

2 types of arteries

A

Elastic arteries
Muscular arteries

17
Q

Microscopic arteries that lead to capillaries

Site of greatest resistance to blood flow

A

Arterioles

18
Q

Thin walled blood vessels that is used for exchange of substances between blood and tissue

A

Capillaries

19
Q

3 types of capillaries

A

Continuous
Fenestrated
Sinusoidal

20
Q

The most common type of capillaries

Complete endothelial lining

Allows exchange of water gasses and small molecules

A

Continuous capillaries

21
Q

Contains pores in endothelial lining

Found in small intestine and kidneys

Allows for greater exchange of fluid and larger molecules

A

Fenestrated capillaries

22
Q

The least common capillaries

Found in liver spleen and red bone marrow

Allows exchange of plasma proteins and cells

A

Sinusoidal capillaries

23
Q

Regulates flow of blood in capillary beds

A

Metarterioles

24
Q

Contract to limit blood flow through capillaries

A

Sphincters

25
Q

Extremely small veins

A

Venules

26
Q

Blood vessels that carry blood towards the heart

Thinner walls than arteries

A

Veins

27
Q

Typical pattern of blood flow

A

Artery,arterioles,capillary bed, venules then veins

28
Q

The movement of blood through the body

A

Blood flow

29
Q

It is measured using a sphegomomanometer at the brachial artery

A

Arterial blood pressure

30
Q

It is the difference between systolic and diastolic pressure

A

Pulse pressure

31
Q

High blood pressure is when it is over __/__

A

140/90 mm hg