Sperm are moved along the ductus deferens by
A) hydrostatic force.
B) ciliary action.
C) peristaltic contractions.
D) suction.
E) hydraulic action.
Answer: C
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Which of the following is a visceral sense?
A. Touch B. Pain C. Hunger D. Heat
What mechanism causes the voltage-gated Na+ channels to close during an action potential?
A) The activation gate is voltage sensitive and closes close to the equilibrium potential for Na+. B) The activation gate is sensitive to K+ and closes when its intracellular concentrations drop. C) The inactivation gate has a time-dependent closure. D) The inactivation gate is voltage sensitive and closes close to the equilibrium potential for Na+.
Most sympathetic pathways originate in the __________ regions of the CNS
A) Thoracic and lumbar B) Hindbrain and sacral C) Cranial D) Postganglionic Fill in the blank with the correct answer.
Digestive System: Which number in the figure represents a contraction of the thick-muscled antrum?
Which number in the figure represents the pyloric sphincter? ?
a.1 b.2 c.3 d.4 e.5 f. 6
Which number in the figure represents a contraction of the thick-muscled antrum?
a.1 b.2 c.3 d.4 e.5 f. 6
Which number in the figure represents the initiation of peristaltic contraction?
a.1 b.2 c.3 d.4 e.5 f. 6
Which number in the figure represents chyme in the duodenum??
a.1 b.2 c.3 d.4 e.5 f. 6
Which number in the figure represents retropulsion of chyme? ?
a. 1 b. 2 c. 3 d. 4 e. 5 f. 6