Which antiarrhythmic drug is used to treat ventricular fibrillation?
a. propranolol
b. bretylium
c. verapamil
d. lidocaine
.B
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The two divisions of the skeleton are called axial and ________.
Fill in the blank(s) with the appropriate word(s).
The thick myofilament of the skeletal muscles is made of:
a. sarcomere b. actin c. myosin d. Z-lines
What is the primary method by which materials such as O2, CO2, and nutrients are exchanged between the blood and surrounding tissues?
a. passive diffusion across the capillary wall down their concentration gradients b. active transport across the capillary wall c. osmotic pressure drawing water and solutes out of the capillary and bringing these dissolved nutrients into contact with the tissue cells d. ultrafiltration and reabsorption e. bulk flow
Calcitonin
A. decreases osteoblast activity. B. decreases osteocyte activity. C. is associated with decreased osteoclast activity. D. decreases osteochondral progenitor cell activity. E. has no effect on bone cells.