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Exam (elaborations)

Challenge questions blank

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Challenge questions blank

Institution
BIOLOGY MCB3023
Course
BIOLOGY MCB3023









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Institution
BIOLOGY MCB3023
Course
BIOLOGY MCB3023

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Uploaded on
July 29, 2021
Number of pages
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Written in
2020/2021
Type
Exam (elaborations)
Contains
Questions & answers

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1. John was given an ACE-inhibitor for hypertension. What events would likely follow after
taking his medication?
a. Release of aldosterone
b. Increase H2O retention
c. Decrease in endothelin
d. Decrease Na+ excretion
2. Calculate the pulse pressure and mean arterial pressure for someone who has an arterial
blood pressure of 115/82 mmHg.
a. Pulse pressure= 33 mmHg, MAP= 82 mmHg
b. Pulse pressure= 1.4 mmHg, MAP= 9.43 mmHg
c. Pulse pressure= 33 mmHg, MAP= 93 mmHg
d. Pulse pressure 93 mmHg, MAP= 115 mmHg
3. True or false: a baroreceptor within the atria will signal to increase HR when a high atrial
pressure is detected.
4. Calculate the cardiac output for someone who has a heart rate of 50 bpm with an end




m
er as
diastolic volume of 80 mL and an end systolic volume of 30 mL.
a. 2500 mL




co
eH w
b. 100 mL
c. 3000 mL




o.
d. 4000 mL
rs e
ou urc
5. According to the Starling Law of the Heart, an increase in preload will have what effect
on stroke volume?
a. Increasing preload will decrease stroke volume
o

b. Increasing preload will increase stroke volume
aC s

6. The end of the P wave begins the __ sound whereas the end of the T wave begins the __
vi y re


sound
a. S4; S2
b. S1; S3
c. S3; S4
ed d




d. S1; S2
ar stu




e. None of the above
7. Sally is diagnosed with ventricular hypertrophy and constriction of cerebral vessels.
Which of the answers may be the cause?
is




a. Excess prostaglandin
b. Excess nitroglycerin
Th




c. Excess Angiotensin II
d. Excess ADH
8. True or false: A baroreceptor within the arteries will signal to increase the HR when a
sh




low arterial pressure is detected.
9. At which stage does ventricular isovolumetric contraction begin?
a. When all valves are closed and the ventricle is fully depolarized (peak of QRS)
b. When the ventricles are rapidly ejecting blood
c. When all valves are closed at the ventricles are repolarizing (end of T wave)
d. None of the above


This study source was downloaded by 100000828326221 from CourseHero.com on 07-29-2021 04:19:50 GMT -05:00


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, 10. Ms. Jones has a sudden onset of tachycardia. What might a PA do temporarily fix this
issue?
a. Push saline
b. Valsalva Maneuver
c. Nitroglycerin
d. Have the patient do yoga
11. Calculate the blood flow from the left ventricle to the aorta, if the left ventricular
pressure= 50 mmHg and the aortic pressure= 30 mmHg. Resistance in the aorta is 2.
a. 10 mL/min
b. 20 mL/min
c. 30 mL/min
d. 5 mL/min
12. All of the following signals the kidneys to release renin except:
a. Hypernatremia
b. Beta stimulation




m
er as
c. Decrease in afferent arteriole pressure
d. Hypotension




co
eH w
13. Mr. Smith, an 86-year-old male, is suffering from congestive heart failure which is
causing his heart to not contract as it should. You are asked while on your rotations




o.
rs e
which cellular mechanisms could be helpful in increasing inotropy in Mr. Smith’s heart.
ou urc
What would you say?
a. Blocking calcium channels within cardiac myocytes
b. Increasing intracellular calcium sensitivity within cardiac myocytes
o

c. Increasing the amount of intracellular Na+ and Ca++ within cardiac myocytes
aC s

d. Cholinergic drugs
vi y re


e. Both a and e
f. Both b and c
14. You just ate a big salty pizza and now you are thirsty. This is caused by ______ signaling
the ______ to signal thirst, which makes you feel thirsty.
ed d




a. ADH; pons
ar stu




b. Aldosterone; Medulla
c. Angiotensin II; hypothalamus
d. ANP; limbic system
is




15. Which of the following is an afferent mechanism of detecting high blood pressure?
a. RAAS
Th




b. Baroreceptors in the carotid sinus
c. Nucleus tractus solitarius
d. Pressor and depressor centers
sh




16. The renin-angiotensin-aldosterone system has been stimulated. All of the following
changes may occur except:
a. Endothelin secretion
b. Epinephrine secretion
c. Increase in Na+ reabsorption
d. Decrease in vascular smooth muscle resistance


This study source was downloaded by 100000828326221 from CourseHero.com on 07-29-2021 04:19:50 GMT -05:00


https://www.coursehero.com/file/73931888/Challenge-questions-blankdocx/

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