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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
Arteriosclerosis is characterised by
Thicken of the tunica intima and loss of elasticity in the tunica media
25
In the pulmonary circulation the ------carry blood to the lungs
Pulmonary arteries
26
The systemic circulation
Includes aorta and all of its branches
27
The blood vessels that branch from the ascending aorta are the
Coronary arteries
28
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
Foot
29
An obstruction in the inferior vena cava would hamper the return of blood from the
Abdomen,pelvis and lower limbs
30
Veins that return blood directly to the heart include the
Superior vena cava
31
The velocity of blood flow inside a blood vessel
Is faster in the Center of the blood vessel
32
The statement about laminar blood flow is true
The outermost layer of blood experience the greatest resistance to flow
33
Blood pressure is the
Measure of the force blood exerts against blood vessels walls
34
The auscultatory method of measuring blood pressure
Relies on hearing korotkoffs sound through a stethoscope
35
A blood pressure reading of 120/80 would
Would be consider normal for young adult male
36
When measuring blood pressure with a sphygmomanometer which is the following best described when blood flow in a brachial artery is turbulent?
When pressure in the brachial artery I s greater than in the blood pressure cuff and a greater than the diastolic pressure
37
Whichbof the following would be increase resistance to blood flow
A decrease in the radius of the vessel
38
Resistance in the cardiovascular system
Tends to increase if blood viscosity increase
39
Resistance in the cardiovascular system
Tend to increase if blood viscosity increase
40
According to poiseuilles law
If resistance increase flow decrease
41
As viscosity of the blood increase
The pressure required to force it to flow increase
42
The greater the compliance in the vessels
More easily the vessels wall stretches
43
Which of the following acts as a storage area of blood
The veins
44
In the aorta
The blood pressure and blood velocity are both high
45
Resistance to blood flow is greatest in
Arterioles
46
If someone has a blood pressure reading 110/70 mmhg their pulse pressure would be
40mm hg
47
Arteriosclerosis results in decreased compliance which in turn causes the pulse pressure to
Increase
48
In which of the following would you detect a weak pulse
Hemorrhagic shock
49
When blood pressure is greater than the blood colloid osmotic pressure there is
A net movement of fluid out of the capillary
50
A force causes the movement of fluid out of the capillary is
Blood pressure
51
A force that attracts fluid into the capillary from the tissue space is
Blood colloid osmotic pressure
52
Oedema can occur when there is
A blockage of the lymphatics
53
Which of the following is less likely to result in edema
Increased mean arterial pressure
54
In which of the following clinical situations would you expect edema
Burns (which result in increased capillary permeability to plasma proteins)
55
In capillary exchange which of the following statements is true
Most fluid that leaves the arterial end of the capillary reenters the venous end of a capillary
56
Which of the following factors assists in the return of venous blood to the heart
2,3,4
57
Increased venous tone will
Help return blood to the heart
58
Following happen a person stands in one place for a long period of time
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
Following would lead to relaxation of the precapillary sphincter
Decrease nitric acid levels
60
Vasomotor tone can be increased by
Emotional excitement
61
Following regarding to regulation of local blood flow is true
Increase metabolic rate in a tissue increase capillary blood flow into a tissue
62
Epinephrine (adrenaline)
Cause vasodilation of coronary blood vessels
63
Chemoreceptors
Are located in the aorta and carotid bodies
64
The chemoreceptor reflexes help maintain homeostasis
When carbon dioxide level increase
65
If a person has a blood pressure of 120/80 their main arterial pressure would be----- mm hg
80
66
Most of the exchange of the nutrient and waste products that occur between the blood and interstitial spaces occurs across the wall of the ----
Capillaries
67
The innermost later of a blood vessels wall is the tunica------
Intima
68
The _____ arteries branch from the ascending aorta
Coronary
69
The brachial artery divides into the _____ and ______ arteries
Ulnar ,radial
70
The pelvic area is supplied with blood from the _____ arteries
Internal iliac
71
_______ Is a measure of the force exerted by blood against the blood vessels walls
Blood pressure
72
The viscosity of blood is influenced largely by _____ which is the percentage of the total blood volume composed of red blood cells
Haematocrit
73
The maintanance of blood flow by tissue is called
Autoregulation
74
The vasomotor Center is located in the ____ and_____
Pons and medulla obolangata
75
_______ carry blood away from the heart
Arteries

NuR 154 Human structure Part 2 (2 decks)

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