The cardiovascular reflexes are based in the
A) cerebrum.
B) midbrain.
C) cerebellum.
D) medulla oblongata.
E) spinal cord.
Answer: D
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Recommended daily allowances were established by the Food and Nutrition board as directed by the
A. largest food-producing companies. B. National Academy of Sciences.
Which layer of the epidermis is composed of flattened, dead, keratin-filled cells?
A) stratum spinosum B) stratum granulosum C) stratum basale D) stratum corneum E) stratum lucidum
In a neuromuscular junction, synaptic vesicles in the motor neuron contain which neurotransmitter?
A) acetylcholine (ACh) B) dopamine C) serotonin D) norepinephrine
When sodium ions are reabsorbed in response to the action of aldosterone, potassium ions are
A. secreted. B. actively reabsorbed. C. passively reabsorbed. D. reabsorbed.