Download Physiology Practice Exam 3

Fiorino 2017
Practice Exam 3
Match the following cell types to the precursor stem cell.
A.) myeloid
B.) lymphoid
1.) Macrophages
2.) erythrocytes
3.) B cells
4.) Monocytes
5.) basophils
6.) eosinophils
7.) T cells
8.) neutrophils
9.) T/F: Males typically have a higher hematocrit than females.
10.) Which of the following can be found in the plasma/serum of blood?
a) antibodies
b) erythrocytes
c) platelets
d) hormones
11.) All of the following statements regarding blood flow are true EXCEPT:
a) blood flows into the right atrium from the superior and inferior vena cavae. Blood is then
pumped into the right ventricle after the tricuspid valve opens.
b) The right ventricle pumps blood out of the heart into the pulmonary veins after the opening
of pulmonary valve.
c) Blood returns to the heart into the left atrium, which then delivers the blood to the left
ventricle after the mitral valve opens.
d) the left ventricle pumps blood into the aorta after opening of the aortic valve.
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12.) Which of the following is true?
a) Increased preload decreases stroke volume
b) increased afterload decreases stroke volume
c) more blood in the ventricle will lead to less pressure in the chamber
d) The pressure caused by end diastolic volume causes an opening of the mitral valve
13.) Which of the following can cause hypertension (select all that apply)?
a) pheochromocytoma
c) increased LDL
e) increased nitric oxide
b) decreased aldosterone
d) hyperglycemia
14.) Which of the following is true regarding SA node action potentials?
a) phase 0 (major depolarization) is caused by an outflow of Na
b) Phase 3 (repolarization) occurs due to an influx of Ca
c) Phase 3 occurs as an outflow of Ca
d) Phase 4 (slow depolarization) occurs during the slow influx of Na
15.) Which of the following is true regarding EKG?
a) The P wave represents repolarization of the atria
b) The U wave represents the last remnants of the depolarization of the ventricles
c) The PR-interval contains the depolarization and repolarization of the atria
d) The ST interval contains the depolarization of both the ventricles and atria
16.) Which of the following can cause an extra QRS complex (extrasystole)?
a) AV block
b) myocardial infarction
c) increased afterload
d) ectopic foci
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17.) Which of the following is false about ADH?
a) it works on the collecting tubule of the nephron
b) it responds to high blood osmolarity
c) it causes us to retain water in order to decrease osmolarity
d) It changes the amount of sodium and potassium in our bloodstream
18.) Which of the following are symported by Na in the nephron?
a) amino acids, glucose, bicarbonate, and water
b) potassium and chloride
c) glucose, calcium, and potassium
d) Yo Mama
19.) Which of the following is true regarding atrial and ventricular action potentials?
a) Phase 0 (major depolarization) is caused by an influx of Ca
b) Phase 2 (plateau) is caused by the influx of potassium and outflow of Ca.
c) Phase 3 (major repolarization) is caused by an inflow of potassium
d) Phase 1 (slight repolarization) is caused by potassium outflow
20.) Which of the following is false?
a) Tachycardia decreases the ST interval
b) AV block will shorten the PR interval
c) The U wave can show the last remnants of ventricular repolarization
d) A recent myocardial infarction can show abnormalities in an EKG
21.) T/F: Aldosterone raises blood pressure
22.) T/F: Aldosterone acts on the nephron.
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23.) Which of the following is true?
a) The ascending loop of henle concentrates the filtrate
b) The descending loop of henle causes a higher filtrate osolarity
c) ADH closes aquaporins to prevent water from moving into the filtrate from the bloodstream.
d) The kidneys produce angiotensin converting enzyme.