Defecation is stimulated by ________
A) stretching of the rectum
B) lipid content in the feces
C) bacterial flora in the feces
D) water content of the feces
E) the chemical composition of the feces
A
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The information the body receives from a receptor detecting a stimulus and recognize a change
is called a A) perception. B) feedback. C) sensation. D) thinking. E) a preprogrammed response.
The sensation of thirst results from
A. an increase in the plasma volume. B. hypertension (increased blood pressure). C. stimulation of osmoreceptor cells in the hypothalamus. D. a decrease in the osmolality of the extracellular fluid. E. stimulation of baroreceptors.
The hormone that controls milk production in mammals is
A) Estrogen. B) Oxytocin. C) Prolactin. D) Prostaglandin.
Under normal circumstances, salt
A. is found in the filtrate and is reabsorbed, but still occurs in the urine. B. never leaves the blood plasma. C. is filtered and reabsorbed totally. D. is filtered, but not reabsorbed.