The lymphoid tissues that trap and remove bacteria that enter the throat are indicated by ________
A
Anatomy & Physiology
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What do nicotinic receptors bind?
A. Epinephrine B. Norepinephrine C. Dopamine D. Acetylcholinesterase E. Acetylcholine
Anatomy & Physiology
The gonads, adrenal cortex, and posterior pituitary gland secrete steroid hormones.
a. true b. false
Anatomy & Physiology
Opening of sodium channels in the axon membrane causes
A) depolarization. B) repolarization. C) hyperpolarization. D) increased negative charge inside the membrane. E) inhibition.
Anatomy & Physiology
The inner cell mass of the blastocyst
A. contains cells that will form the embryo. B. contains cells that are discarded. C. consists of yolk-filled storage cells. D. represents the future placenta. E. will form the zona pellucida.
Anatomy & Physiology