Specific prevertebral ganglia are named after the
A. effector organ stimulated by the postganglionic axon.
B. major abdominal arteries around which they are found.
C. vertebra from under which the preganglionic axon travels.
D. distance from the corresponding parasympathetic ganglion.
E. early anatomist who discovered and described them.
B
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A new, non-surgical alternative to vasectomy called Vasalgel is done by injecting an impassable gel into the ductus deferentia. What contraceptive effect will this have?
A. The vasectomy causes secretions that interrupt testosterone secretion from interstitial cells. B. The prostate gland will be blocked from secreting nutrients for sperm into the ductus deferentia. C. Sperm will be blocked from traveling from the testis to the urethra. D. Ciliated columnar cells will be blocked from secreting sperm-fueling glycogen.
Which of the following is an example of an anion?
A) magnesium B) potassium C) calcium D) chloride E) sodium
Which of the following is unique to meiosis?
nuclear membrane breaks down DNA organizes into chromosomes crossing-over chromosomes align along the central plate of the cell None of the choices are correct.
A series of measurements with a voltmeter show a neuron's membrane potential becoming more negative, from -70 mV to -85 mV. This neuron is experiencing a:
A) hyperpolarization phase. B) depolarization phase. C) polarization phase. D) repolarization phase.