The axons of afferent and efferent neurons are usually organized into structures called
A) Nuclei.
B) Ganglia.
C) Nerves.
D) Tracts.
Answer: C
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Molecule X is some sort of chemical messenger. Its receptor resides within the nucleus and once the receptor is bound to X, gene transcription occurs. Molecule X might be a(n)
A. ion. B. hydrophilic protein. C. large protein. D. hydrophilic carbohydrate. E. lipid/steroid.
Which of the following would cause stroke volume to increase?
A) when venous return is decreased B) when ventricular contraction is reduced C) drugs that stimulate beta-1 receptors D) decrease in heart rate E) decreased sympathetic stimulation
Hemoglobins get their color from
A) Heme. B) Iron. C) Protein. D) Copper.
Why would an enlarged prostate gland interfere with urination?
A) It produces thicker prostatic secretions that block the urethra. B) It inhibits urine production. C) It compresses the urethra. D) It inhibits the micturition reflex. E) It develops calcified deposits that block the urethra.