Where are intercalated cells found and what do they do?
A. Distal convoluted tubules; reabsorption of sodium
B. Collecting duct; reabsorption of sodium
C. Distal convoluted tubule; secretion of hydrogen or bicarbonate ions
D. Collecting duct; secretion of hydrogen or bicarbonate ions
E. Nephron loop; reabsorption of sodium
D. Collecting duct; secretion of hydrogen or bicarbonate ions
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An adult patient shows Babinski's sign during a test of plantar reflex. How is Babinski's sign different than the normal response and what does the altered response indicate?
What will be an ideal response
Skeletal muscle can be tetanized; can heart muscle also be tetanized? Why or why not?
A) Yes, extrasystoles are evidence of tetanus. B) Yes, all muscle can be tetanized. C) No, heart muscle does not show summation and tetanus because of the long refractory period of cardiac muscle cells.
What are the functions of the bulbo-urethral glands?
A) Bulbo-urethral glands produce about 60 percent of the volume of semen. B) Bulbo-urethral glands produce the antibiotic protein, seminalplasmin. C) Bulbo-urethral glands produce testosterone. D) Bulbo-urethral glands produce inhibin. E) Bulbo-urethral glands produce mucus that neutralizes acid in the urethra and lubricates the penis.
Bacteria constitute about ________% of the dry weight of the feces.
A. 2 B. 55 C. 80 D. 30 E. 14