Which of the following is a form of nonspecific defense?
A. Cell-mediated immunity
B. Antibody-mediated immunity
C. Natural killer cells
D. All apply.
Answer: C
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A slowly progressive disorder affecting muscle movement and balance, this condition is characterized by stiff posture, tremors, and reduced spontaneity of facial expressions.
A. Amyotrophic lateral sclerosis B. Multiple sclerosis C. Parkinson disease D. Guillain-Barré syndrome E. None of the choices is correct.
The intestines are innervated by both the sympathetic and the parasympathetic divisions of the autonomic nervous system. During a meal, the ________ division activates digestion and slows heart rate. During exercise, the ________ division slows digestion and increases heart rate.
A. parasympathetic; sympathetic B. sympathetic; parasympathetic C. sympathetic; sympathetic D. parasympathetic; parasympathetic
Which of the following apply to the cranial nerves?
A) They are motor only, from the brain to peripheral effectors. B) They are all mixed nerves, with both sensory and motor functions. C) They are components of the PNS that connect to the brain. D) They all connect directly to peripheral receptors or effectors. E) None of the answers are correct.
The vagus nerve carries parasympathetic impulses to the
A. salivary glands. B. lacrimal glands. C. smooth muscle of the eyes. D. thoracic and abdominal viscera. E. thyroid gland.