Which male gland encircles the urethra and secretes a fluid that enhances sperm motility?
A. Prostate
B. Cowper's glands
C. Seminal vesicles
D. Bulbourethral glands
Answer: A
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A hormone whose effects last a long time has a ________ half-life.
Fill in the blank(s) with the appropriate word(s).
The skeletal system does not:
a. provide a rigid framework of support b. produce blood cells c. produce vitamin D d. serve as a storage place for minerals
What is one of the main functions of intermediate filaments?
A. Cell-to-cell junctions B. Cell movement C. Cell shape D. Form flagella
The superior colliculi receive input from the
A. nose, tongue, and inner ear. B. eyes, skin, cerebrum, and inferior colliculi. C. inferior colliculi, pyramids, skin, and red nucleus. D. skin, ears, pyramids, and cerebellum. E. cerebrum, cerebellum, thalamus, and inferior colliculi.