MCAT Biology Practice Questions

1. The right coronary artery divides to form the posterior interventricular artery and the ___ artery.

A. Marginal
B. LVC
C. RVC
D. LAD

2. Blood flowing into the cardiac veins enters the _______ next.

A. Coronary Sinus
B. Left Ventricle
C. Right Ventricle
D. Left Atrium

3. Which of the following occurs during ventricular systole?

A. Increased aortic pressure
B. Increased ventricular volume
C. Dup heart sound
D. P wave

4. Which of the following occurs during ventricular diastole?

A. Increased aortic pressure
B. Increased ventricular volume
C. Lub heart sound
D. T wave

5. The innermost layer of a blood vessel is lined with _______ ______ cells.

A. Simple squamous
B. Stratified squamous
C. Simple cuboidal epithelium
D. Stratified cuboidal epithelium

6. Angiotension can directly cause the release of ____ from the adrenal cortex.

A. Renin
B. Aldosterone
C. Calcitonin
D. Thyroxine

7. Which of the following is the deepest layer of the epidermis?

A. Stratum spinosum
B. Stratum corneum
C. Stratum granulosum
D. Stratum basale

8. Which of the following is beneath the stratum corneum?

A. Stratum spinosum
B. Stratum corneum
C. Stratum granulosum
D. Stratum basale

9. Which of the following is not considered an endocrine hormone?

A. Renin
B. Insulin
C. Glucagon
D. Somatostatin

10. What type of cells secrete glucagon?

A. Beta cells
B. Alpha cells
C. Plasma cells
D. Acinar cells

Answer Key