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NuR 154 Human structure Part 2 > Week 3 > Flashcards

Week 3 Flashcards

0
Q

2.what is the order of the blood vessels that a red blood cell would pass through as a blood leaves the heart,travels to a tissue and then returns to the heart?

A

Artery,arteriole,capillary,venule,vein

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1
Q

1.systematic blood vessels transport blood

A

From the left ventricle through the body to the right Atrium

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2
Q

3.which of the following enhances the exchanges between capillary walls and the interstitial spaces

A

The thinnes of the capillary wall

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3
Q

4.the lining of capillary is called the

A

Endothelium

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4
Q

5.the exchange of nutrients and gases between the blood and tissues cells is the primary function of

A

Capillaries

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5
Q

Continuous capillaries

A

Have a wall where the endothelial cells fit very tight

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6
Q

Which of the following organ would be most likely to contain finest rated capillaries

A

Kidney

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7
Q

Capillary walls serves as effective permeability barrier for

A

Proteins

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8
Q

Pre capillary sphincters

A

Control the blood flow into capillary beds

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9
Q

Which coat of an artery contains endothelium

A

Tunica intima

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10
Q

Which of the following function is associated with vessels that carry blood directly from arteriole. To veins without passing through capillaries

A

Thermoregulation

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11
Q

Arteries can constrict or dilate as needed because of the smooth muscles found in the

A

Tunica media

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12
Q

Following statement concern blood vessels, walls is true

A

The tunica intima is the innermost layer of a blood vessels walls

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13
Q

The blood vessels that are under the greatest pressure are the

A

Elastic arteries

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14
Q

Which of the following best describe arteries

A

Strong,elastic vessels that carry blood under high pressure

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15
Q

Distributing arteries

A

Contain thick tunica media

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16
Q

From the heart to body tissues which of the following sequences of vessels is correct

A

Elastic arter,muscles artery, arteriole ,capillary

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17
Q

Valves similar to semilunar valves are found in some

A

Veins

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18
Q

When contrasting arteries and veins which statement is true

A

Arteries have thicker tunica media than veins

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19
Q

Veins

A

May contains valves and are lined eith endothemilum

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20
Q

The structure of a capillarywaal differ from that of veins or artery because

A

Capillary wall have only endothelium and a basement membrane.

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21
Q

The vasa vasorum are

A

Special capillaries that supply nutrients to the walls of arteries and veins

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22
Q

The structure that allow blood to flow from arteries to veins without passing through capillaries is called

A

Arteriovenous anastomoses

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23
Q

Systematic nerves fibres that inner vats blood vessels walls are found primarily epin the

A

Tunica media

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24
Q

Arteriosclerosis is characterised by

A

Thicken of the tunica intima and loss of elasticity in the tunica media

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25
Q

In the pulmonary circulation the ——carry blood to the lungs

A

Pulmonary arteries

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26
Q

The systemic circulation

A

Includes aorta and all of its branches

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27
Q

The blood vessels that branch from the ascending aorta are the

A

Coronary arteries

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28
Q

One of the best way to determine the adequacy of peripheral circulation is to check the pedal pulse to check the pedal pulse you would check the pulse in the

A

Foot

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29
Q

An obstruction in the inferior vena cava would hamper the return of blood from the

A

Abdomen,pelvis and lower limbs

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30
Q

Veins that return blood directly to the heart include the

A

Superior vena cava

31
Q

The velocity of blood flow inside a blood vessel

A

Is faster in the Center of the blood vessel

32
Q

The statement about laminar blood flow is true

A

The outermost layer of blood experience the greatest resistance to flow

33
Q

Blood pressure is the

A

Measure of the force blood exerts against blood vessels walls

34
Q

The auscultatory method of measuring blood pressure

A

Relies on hearing korotkoffs sound through a stethoscope

35
Q

A blood pressure reading of 120/80 would

A

Would be consider normal for young adult male

36
Q

When measuring blood pressure with a sphygmomanometer which is the following best described when blood flow in a brachial artery is turbulent?

A

When pressure in the brachial artery I s greater than in the blood pressure cuff and a greater than the diastolic pressure

37
Q

Whichbof the following would be increase resistance to blood flow

A

A decrease in the radius of the vessel

38
Q

Resistance in the cardiovascular system

A

Tends to increase if blood viscosity increase

39
Q

Resistance in the cardiovascular system

A

Tend to increase if blood viscosity increase

40
Q

According to poiseuilles law

A

If resistance increase flow decrease

41
Q

As viscosity of the blood increase

A

The pressure required to force it to flow increase

42
Q

The greater the compliance in the vessels

A

More easily the vessels wall stretches

43
Q

Which of the following acts as a storage area of blood

A

The veins

44
Q

In the aorta

A

The blood pressure and blood velocity are both high

45
Q

Resistance to blood flow is greatest in

A

Arterioles

46
Q

If someone has a blood pressure reading 110/70 mmhg their pulse pressure would be

A

40mm hg

47
Q

Arteriosclerosis results in decreased compliance which in turn causes the pulse pressure to

A

Increase

48
Q

In which of the following would you detect a weak pulse

A

Hemorrhagic shock

49
Q

When blood pressure is greater than the blood colloid osmotic pressure there is

A

A net movement of fluid out of the capillary

50
Q

A force causes the movement of fluid out of the capillary is

A

Blood pressure

51
Q

A force that attracts fluid into the capillary from the tissue space is

A

Blood colloid osmotic pressure

52
Q

Oedema can occur when there is

A

A blockage of the lymphatics

53
Q

Which of the following is less likely to result in edema

A

Increased mean arterial pressure

54
Q

In which of the following clinical situations would you expect edema

A

Burns (which result in increased capillary permeability to plasma proteins)

55
Q

In capillary exchange which of the following statements is true

A

Most fluid that leaves the arterial end of the capillary reenters the venous end of a capillary

56
Q

Which of the following factors assists in the return of venous blood to the heart

A

2,3,4

57
Q

Increased venous tone will

A

Help return blood to the heart

58
Q

Following happen a person stands in one place for a long period of time

A

Gravity cause an increased accumulation of blood in the veins im the feet and legs
>blood pressure rises in the venues of the feet
>without muscular movement the pressure at the venous end of the capillaries increase
>edema may occur in the lower extremities

59
Q

Following would lead to relaxation of the precapillary sphincter

A

Decrease nitric acid levels

60
Q

Vasomotor tone can be increased by

A

Emotional excitement

61
Q

Following regarding to regulation of local blood flow is true

A

Increase metabolic rate in a tissue increase capillary blood flow into a tissue

62
Q

Epinephrine (adrenaline)

A

Cause vasodilation of coronary blood vessels

63
Q

Chemoreceptors

A

Are located in the aorta and carotid bodies

64
Q

The chemoreceptor reflexes help maintain homeostasis

A

When carbon dioxide level increase

65
Q

If a person has a blood pressure of 120/80 their main arterial pressure would be—– mm hg

A

80

66
Q

Most of the exchange of the nutrient and waste products that occur between the blood and interstitial spaces occurs across the wall of the —-

A

Capillaries

67
Q

The innermost later of a blood vessels wall is the tunica——

A

Intima

68
Q

The _____ arteries branch from the ascending aorta

A

Coronary

69
Q

The brachial artery divides into the _____ and ______ arteries

A

Ulnar ,radial

70
Q

The pelvic area is supplied with blood from the _____ arteries

A

Internal iliac

71
Q

_______ Is a measure of the force exerted by blood against the blood vessels walls

A

Blood pressure

72
Q

The viscosity of blood is influenced largely by _____ which is the percentage of the total blood volume composed of red blood cells

A

Haematocrit

73
Q

The maintanance of blood flow by tissue is called

A

Autoregulation

74
Q

The vasomotor Center is located in the ____ and_____

A

Pons and medulla obolangata

75
Q

_______ carry blood away from the heart

A

Arteries

NuR 154 Human structure Part 2 (2 decks)

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