When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to sodium ions,
A. the membrane will be hyperpolarized.
B. more chloride ions will also diffuse into the cell.
C. an excitatory postsynaptic potential (EPSP) will result.
D. the membrane will become impermeable to potassium ions.
E. the sodium ions diffuse out of the cell.
C
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As seen on coronal images, the lateral walls of the third ventricles are formed by the ____________________.
Fill in the blank(s) with the appropriate word(s).
During early development, the Y chromosome produces a substance called "testis determining factor" (TDF) that causes the indifferent gonad to become a testis. This would be an example of
A) capacitation. B) activation. C) differentiation. D) induction. E) predilection.
Adductor, flexor, and extensor muscles are named according to their ____
a. number of origin b. shape c. action d. location
Which of the following is a lubricant that keeps skin soft and moist and also contains chemicals that kill bacteria?
A) sweat B) sebum C) carotene D) melanin