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BN507 > Cardiovascular 2 > Flashcards

Cardiovascular 2 Flashcards

1
Q

Renin-angiotensin mechanism increases the reabsorption of sodium and water to restore blood volume and increase blood pressure

A

True

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2
Q

Most influential factor to blood flow resistance

A

Diameter of blood vessels

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3
Q

What determines cardiac output

A

Heart Rate

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4
Q

Which of the following factors converts fibrinogen into fibrin in the final step of coagulation

A

Thrombin

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5
Q

Conduction system of the heart in correct order

A

Sinoatrial node
Atrioventricular node
AV bundle of his
Right and left bundle brunches
Purkinje fibers

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6
Q

What is the correct Equation for cardiac output?

A

Cardiac output equals stroke volume times heart rate

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7
Q

Atrioventricular valves close

A

Systole

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8
Q

Intra ventricular pressure increases

A

Systole

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9
Q

Blood rushes into great arteries

A

Systole

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10
Q

Semilunar valves close

A

Diastole

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11
Q

Difference in pressure forces blood flow

A

True

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12
Q

HR and strength of contraction are controlled by the cardiovascular centre located in the

A

Brainstem

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13
Q

Which of the following occur during ventricular diastole

A

The artrioventricular valves open

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14
Q

Clot retraction

A

Compacts the blood clot drawing torn edges of the damaged vessel closer together

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15
Q

Blood flows through vessels due to

A

Pressure gradient

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16
Q

Autoregulation affects the

A

Precapillary sphincters
Arterioles

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17
Q

Which of the following has influenced in the resistance to blood flow in adults

A

Blood vessel diameter

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18
Q

Which of the following breaks down fibrin/clots

A

Plasmin

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19
Q

Intrinsic

A

Pathway is activated by platelets adhering to exposed collagen fibers in the blood vessel lining

20
Q

Extrinsic

A

Pathway is initiated by damaged cells outside of the blood vessel

21
Q

Common

A

Pathway begins with activation of prothrombin activator

22
Q

Which of the following is referred to as the pacemaker of the heart

A

Sinoatrial node (SA)

23
Q

Clotting factors are always available

A

True

24
Q

Renin-angiotensin mechanism leads to the formation of angiotensin II stimulates

A

Release of aldosterone
Vasoconstriction
Release of ADH

25
Q

Which of the following facilitate venous blood flow back to the heart

A

Sympathetic Action
Skeletal muscle pumps
Respiratory pumps

26
Q

Which of the following occurs during ventricular systole

A

Semi-lunar valves are forced open by increasing intraventricular pressure

27
Q

Hemorrhage (significant blood loss) would stimulate

A

An increase in sympathetic activity
Activation of renin-angiotensin mechanism

28
Q

Which of the following correctly depicts the relationship between cardiac output (CO), blood pressure (BP) and vascular resistance (TPR)?

A

BP = CO X TPR

29
Q

The semilunar (SL) valves open due to

A

Pressure in the ventricles exceeding pressure in the aorta and pulmonary trunk

30
Q

Which of the following factors affect stroke volume (SV)?

A

Great artery diameter
Sympathetic innervation
Blood Volume

31
Q

Which of the following are important factors in determining blood pressure?

A

Heart Rate
Total peripheral resistance (TPR)

32
Q

Two atria of the heart contract together just before the ventricles contract

A

True

33
Q

The intrinsic conduction system of the heart

A

Generates a continuous HR without intervention

34
Q

Heart rate (HR) and strength of contraction (contractility) are controlled by the cardiovascular centre located in the:

A

Brainstem

35
Q

Parasympathetic activity increases heart rate (HR)

A

False

36
Q

Release of Aldosterone and ADH

A

Increase BP

37
Q

Increased parasympathetic activity

A

Decrease BP

38
Q

Decrease in HR

A

Decrease BP

39
Q

Increase in blood volume

A

Increase BP

40
Q

Decrease TPR

A

Decrease BP

41
Q

Increase HR

A

Increased BP

42
Q

Renin-angiotensin mechanism

A

Increase BP

43
Q

Increased sympathetic activity

A

Increase BP

44
Q

Release of atrial naturetic peptide (ANP

A

Decrease BP

45
Q
A

BN507 (12 decks)

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