During depolarization of the plasma membrane,
A. Na+ moves rapidly out of the cell.
B. Na+ moves rapidly into the cell.
C. membrane permeability to Na+ decreases.
D. K+ moves rapidly out of the cell.
E. the outside of the cell becomes positively charged relative to the inside.
Answer: B
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Which of the following is true of all the sensory pathways?
A) They all have third-order neurons. B) They all synapse in the thalamus. C) They all synapse in the cerebellum. D) They all enter through dorsal roots. E) Axons in each pathway decussate.
The reddish brown skin that surrounds the nipple is called the
A) vestibule. B) fornix. C) zona pellucida. D) hymen. E) areola.
Which of the following substances is not a product of the Krebs cycle?
A. Pyruvic acid B. Carbon dioxide C. NADH D. ATP
In response to cold weather, the hypothalamus releases _____, which is carried by the _____ to the anterior pituitary where it causes the release of _____.
a. TSH; hypothalamohypophyseal tract; thyroid hormone b. thyrotropin-releasing hormone (TRH); hypothalamohypophyseal portal system; thyroid hormones (TH) c. thyrotropin-releasing hormone (TRH); hypothalamohypophyseal portal system; thyroid-stimulating hormone (TSH) d. oxytocin (OT); hypothalamohypophyseal tract; growth hormone (GH) e. prolactin (PRL); hypothalamohypophyseal portal system; milk