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PHYSIOLOGY > Lecture - Special Circulations, Integrated Control of CVS > Flashcards

Lecture - Special Circulations, Integrated Control of CVS Flashcards

1
Q

Which factor increases MAP?

A

Increase maximum diastolic potential (Hyperpolarization)

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2
Q

Which cardiovascular physio relationship is correct?

A

CO = HR x SV

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3
Q

A 45 male drug addict took amphetamine. Which is least expected?

A

Increase cardiac filling time

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4
Q

Which decreases heart rate?

A. Brainbridge reflex (Tachycardia)
B. Increase threshold potential
C. Increase maximum diastolic potential
D. Decrease slope of depolarization

A

D. Decrease slope of depolarization

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5
Q

45 year old female was diagnosed septic shock by Dr. Jalipa. Started with inotropic support norepinephrine. Which is most likely the physiologic effect of the drug?

A

B2 airway relaxation

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6
Q

A 39 year old female patient was transfused with too much blood volume than what was required resulting to increase venous return and cardiac overload. Cranial nerves IX and X were stimulated. Which is not a parasympathetic effect?

A

Decrease myocardial contractility

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7
Q

A 29 year old male immediately stood up from supine position. Which is not a physiologic response to prevent postural hypotension?

A

Blood vessels in the lower extremities are more distensible

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8
Q

Which condition can increase the risk of postural hypotension?

A. Living in northpole
B. Adrenaline producing tumor
C. Lying supine while texting lover
D. Vasoconstricted blood vessels
E. On going hemorrhage
A

E. On going hemorrhage

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9
Q

During fight or flight response, which is expected physiologic response?

A

Decreased renal blood flow

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10
Q

A 33 year old male gym goer. Which is an expected observation?

A. Precapillary sphincter contracts
B. 
C. Heart rate increases 1.5 x (3x)
D. 
E. Vasodilation of cutaneous blood vessels which will cool down the temperature
A

E. Vasodilation of cutaneous blood vessels which will cool down the temperature

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11
Q

Which is true regarding the physiologic response to hemorrhage?

A

Sudden drop of MAP

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12
Q

Which mechanism results to conservation of salt and water during hemorrhage?

A

Increase Aldosterone release

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13
Q

During hemorrhage, what ion directly stimulates chemoreceptors?

A

H+

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14
Q

A 16 year old male had an LBM resulting to decreased intravascular volume. Not vasoconstriction?

A

Decreased cardiac output

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15
Q

True in transcapillary refill.

A

Replacement of fluid by intracellular fluid.

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16
Q

Which of the following main factor that contributes to orthostasis?

A

Gravity

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17
Q

Flight and fight response is controlled mainly by?

A

Hypothalamus

18
Q

During stimulation of the sympathetic response what happens to the major vessels of the coronary circulation?

A

Vasodilate

19
Q

Angiotensin 1 will go to which organ to be cleaved to become a potent vasoconstrictor?

A

Lungs

20
Q

The kidney releases what type of hormone to cleave angiotensinogen to become angiotensin 1?

A

Renin

21
Q

Aldosterone is released by the adrenal gland and functions to?

A

Conserve water

22
Q

Central chemoreceptor acts when there is a decrease in which of the following?

A

pH level

23
Q

Among the mechanisms of controlling regional blood flow, the following of the statements is correct?

A

None of the choices

24
Q

Shear stress exerted by the movement of blood into the lumen is:

A

True

25
Q

True of blood flow to the brain:

A

Average blood flow is 50 mL and accepts 15% from the cardiac output

26
Q

Blood brain barrier

A

It prevents solutes in the lumen from having direct with BECF

27
Q

Decrease intracellular pH causes weak vasoconstriction

A

True

28
Q

Among the acid-base abnormality..

A

Respiratory acidosis

29
Q

Which mechanism is primary governing..

A

Metabolic control

30
Q

True of the blood flow of the cardiac mycocytes in the left coronaries decrease during:

A

Isovolumetric contraction

31
Q

Principal determinant of O2 delivery to the myocardium:

A

Metabolic control

32
Q

Coronary circulation at rest:

A

70-80%

33
Q

During exercise, the following changes in circulation:

A

Increase cardiac output

34
Q

Countercurrent mechanism

A

Decreases

35
Q

Chylomicron

A

Central lacteal

36
Q

Increase in blood flow with the splanchic circulation is due to:

A

CNS initiates anticipatory response

37
Q

Exercise produce the following:

A

All of the above

38
Q

Very high “precapillary” resistance will be coming from:

A

Hepatic artery to sinusoids

39
Q

Triple response

A

Precapillary sphincter

40
Q

Characteristic of apical skin:

A

All of the choices

41
Q

During exercise, the mechanism occurs:

A

None of the choices

PHYSIOLOGY (9 decks)

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