Which organ system focuses on the large scale production of hormones?
A) Endocrine
B) Lymphatic
C) Urinary
D) Digestive
Answer: A
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The defecation reflex involves
A) sympathetic nerves. B) relaxation of both the internal and external anal sphincters. C) conscious control of both the internal and external anal sphincters. D) relaxation of the ileocecal valve to move feces into the rectum. E) parasympathetic nerve control from sacral nerves.
The heart is enclosed in the ________.
Fill in the blank(s) with the appropriate word(s).
Mean arterial blood pressure
a. equals stroke volume times heart rate b. is 91 mm Hg when the blood pressure is recorded as 117/78 c. is 97.5 mm Hg when the blood pressure is recorded as 117/78 d. is both a and b e. is both a and c
A non-albino female who is a carrier for the albino allele (Aa), mates with an albino (aa) male. What is the probability that their children will be albino?
A. 0% B. 25% C. 50% D. 75% E. 100%