Which of the following is the correct pathway for sperm to travel out of the body?
A. Ejaculatory duct --> epididymis --> vas deferens --> urethra
B. Epididymis --> vas deferens --> ejaculatory duct --> urethra
C. Epididymis --> urethra --> vas deferens --> ejaculatory duct
D. Urethra --> vas deferens --> epididymis --> ejaculatory duct
Answer: B
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What is the function of melanin?
A) It provides water-resistant properties to the integument. B) It continuously divides to replace cells that are lost or shed at the epithelial surface. C) It is converted by the kidneys into the hormone calcitriol. D) It is required for the normal maintenance of epithelial cells. E) It protects DNA from the damaging effects of ultraviolet radiation.
The serosa is the
a. abdominal cavity containing the stomach b. blood supply to the stomach c. inner lining of the digestive tract d. layer of smooth muscle of the digestive tract e. outer connective-tissue covering of the digestive tract
An increase of ____________________ ions in the arterial blood changes the respiratory rate by increasing it
Fill in the blank(s) with correct word
Sympathetic preganglionic axons
A. can synapse in terminal ganglia. B. must synapse in parasympathetic ganglia. C. can synapse with cells in the adrenal cortex. D. can synapse in the dorsal root ganglion. E. can synapse in either chain or collateral ganglia.