Incomplete tetanus
A. results in complete and incomplete tetanus.
B. is the condition in which stimuli occur so rapidly that there are no intervening relaxations.
C. is the constant tension produced by muscles for long periods of time.
D. is the time during which the tissue cannot respond again.
E. is the condition in which the muscle fiber only partially relaxes between contractions.
Answer: E
You might also like to view...
The molecular formula H2O means
A. 1 hydrogen atom and 1 oxygen atom. B. 1 hydrogen atom and 2 oxygen atoms. C. 2 hydrogen atoms and 2 oxygen atoms. D. 2 hydrogen atoms and 1 oxygen atom. E. None of the choices are correct.
The parietal peritoneum is
A. a double-layered serous membrane that anchors some of the abdominal organs to the body wall. B. the serous membrane that lines the abdominal and pelvic cavities. C. the space located between the visceral and parietal pleura. D. the serous membrane that covers the lungs. E. the membrane that lines the pericardial sac.
Luteinizing hormone (LH) binds to interstitial (Leydig) cells and
A. increases testosterone production by the interstitial cells. B. inhibits sustentacular cells. C. promotes sperm cell production by the interstitial cells. D. decreases testosterone production by the interstitial cells. E. stimulates GnRH levels to increase in the testes.
What would result from a lack of extracellular Ca2+ at the neuromuscular junction?
A. Synaptic vesicles would fail to fuse and ACh would not be released. B. The neuron must use its intracellular Ca2+ to make the vesicles fuse. C. Potassium ions are used in place of Ca2+ to ensure the vesicles fuse. D. Nothing would happen because extracellular Ca2+ does not play a role in muscle stimulation. E. Excessive synaptic vesicles would fuse and release too much ACh, overstimulating the myofiber.