What is the result of sympathetic stimulation to the heart?
A. Squeezing of the pericardial sac
B. Decreased intraventricular pressure
C. Decreased heart rate
D. Increased heart rate and force
E. Decreased cardiac output
Answer: D
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Muscular tissue consists of which type of cells or fibers?
A. Elongated fibers (cells) surrounded by abundant matrix B. Spherical cells designed for storage C. Cells with multiple processes that are specialized to send electrical signals D. Elongated fibers (cells) that are specialized to contract
What cells decline in number during the final phase of HIV-1 infection, when an individual is said to have AIDS?
A) helper T (TH) cells B) B cells C) plasma cells D) memory B cells
"Venous angle" refers to:
A) the junction of the two brachiocephalic veins to form the superior vena cava. B) the junction of the internal jugular and subclavian veins. C) the angle that the internal jugular vein makes as it crosses the sternocleidomastoid muscle. D) the angle that the axillary vein makes as it crosses the clavicle. E) the angle that the anterior jugular vein makes with the midline of the neck.
"A flow characterized by smooth, parallel layers of fluid" is the definition of which of the following?
A. relative velocity B. turbulent flow C. laminar flow D. none of the above