Viagra is used to treat erectile dysfunction by prolonging the effects of _____ on blood vessels
A. substance P
B. dopamine
C. GABA
D. nitric oxide (NO)
D
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Which of the following is not true regarding the axial skeleton?
A) has 80 bones B) includes the skull C) includes the pelvic and pectoral girdles D) includes auditory ossicles E) includes the thoracic cage
One of the weakest parts of the shoulder is the part that lacks tendons of the rotator cuff. This weak area is the ______ aspect of the shoulder
A. inferior B. superior C. anterior D. posterior
The ____________________ is point on the retina where the optic nerve exits
Fill in the blank(s) with correct word
Tom is in respiratory arrest due to an electrical shock. Why does a good samaritan have up to 4 or 5 minutes to begin CPR and save Tom's life?
A. There is a venous reserve of oxygen in Tom's blood. B. There is reserve oxygen in Tom's lungs. C. The Haldane effect lasts up to 5 minutes. D. The ambient PO2 can support life that long. E. Tom's hypoxic drive will keep him alive for up to 5 minutes.