What is the foramen ovale?
A. An oval hole in the pericardium in the embryo and fetus
B. An opening between the right and left ventricles in the embryo and fetus
C. An opening between the pulmonary trunk and aorta in the embryo and fetus
D. An opening between the right and left atria in the embryo and fetus
Answer: D
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Which of the following is not true of enzymes?
a. They function on the lock and key model. b. They are functional proteins. c. They are catalysts. d. All of the above are true of enzymes.
Most of the renal sinus is filled by which of the following structures?
A. Renal medulla B. Renal pyramids C. Renal cortex D. Minor calyces E. Renal pelvis
The following are all regions of the upper limb EXCEPT ________
A) pollex B) axillary C) brachial D) antecubital
What type of neural circuit is best for producing a prolonged output?
A. A reverberating circuit B. A converging circuit C. An autonomic pool D. A diverging circuit E. A presynaptic pool