The male reproductive system is responsible for ________
A) the production of sex hormones
B) the production of sex hormones, the production and storage of sperm, and transportation of sperm to the female reproductive tract during intercourse
C) the production of sex hormones as well as the production and storage of sperm
D) the production and storage of sperm as well as transportation of sperm to the female reproductive tract during intercourse
B
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Because of the constant inflow of blood, the atria are thick-walled and located inferiorly in the heart.
Answer the following statement true (T) or false (F)
Select the correct statement about diffusion through a membrane
a. It depends on random motion. b. It involves active forces. c. Its rate increases as the membrane's surface area decreases. d. Ions move from a lower concentration to a higher concentration. e. Large molecules diffuse faster than small molecules.
If the concentration of sodium chloride in the interstitial fluid surrounding cells decreases and the concentration of other solutes remains constant,
A) the cells will shrink. B) the cells will swell. C) the fluid outside of the cells will become isotonic. D) the fluid outside of the cells will become hypertonic. E) the cells will not change.
Suckling by an infant triggers a positive-feedback mechanism that maintains lactation by stimulating the ________.
A. posterior lobe of the pituitary to secrete oxytocin B. contraction of the milk ducts C. anterior lobe of the pituitary to secrete prolactin D. hypothalamus to secrete prolactin-releasing hormone