A portal system exists between the
a. adrenal cortex and adrenal medulla.
b. hypothalamus and anterior pituitary.
c. hypothalamus and posterior pituitary.
d. large intestine and small intestine.
e. large intestine and stomach.
B
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Which layer of the uterine wall is sloughed off during menstruation?
A. Perimetrium B. Epimetrium C. Myometrium D. Basal layer of endometrium E. Functional layer of endometrium
Which of the following might serve as a secondary pacemaker for the heart?
A. Purkinje fibers B. AV node C. Neither AV node nor Purkinje fibers D. Both AV node and Purkinje fibers
Treatment with antibiotic drugs is sometimes followed by a deficiency of vitamin
A. K. B. D. C. A. D. C.
Which of the following is not characteristic of the large intestine? It ________.
A) does not contain villi B) exhibits external muscular bands called teniae coli C) is longer than the small intestine D) has haustra