A posterior and anterior root of each spinal segment unite to form a
A) cervical enlargement.
B) lumbar enlargement.
C) spinal nerve.
D) spinal meninx.
E) spinal ganglion.
Answer: C
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In response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases
A) acetylcholine. B) sodium ions. C) potassium ions. D) calcium ions. E) hydrogen ions.
The condition known as goiter can result from too
A) much insulin. B) little TSH. C) much ACTH. D) little iodine in the diet. E) little glucagon.
The attenuation reflex
A. involves the scala vestibuli and the scala tympani. B. vibrates the tympanic membrane. C. prevents damage to delicate ear structures. D. amplifies loud noises. E. enhances low frequency sounds.
The neuron plasma membrane is - times more permeable to ______ than to sodium
Fill in the blank(s) with the appropriate word(s).