During pregnancy, a woman's areolae and nipples become darker under the influence of

A. vasopressin from the posterior pituitary gland.
B. estrogen and progesterone from the ovary.
C. melanocyte-stimulating hormone from the placenta.
D. melanin from the pineal gland.


Answer: C

Anatomy & Physiology

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Which of these is true about the muscle named levator palpebrae superioris?

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Cholinergic synapses release the neurotransmitter

A) norepinephrine. B) adrenalin. C) serotonin. D) acetylcholine. E) GABA.

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Erection of the penis results from ________

A) dilation of the veins in the penis B) a sympathetic reflex C) parasympathetic activation of the bulbourethral glands D) a parasympathetic reflex

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The speed of individual particle diffusion is influenced by temperature and particle size, not by concentration

Indicate whether the statement is true or false

Anatomy & Physiology