This figure shows a superior view of the cranial cavity. Which number indicates the crista galli?
A. 1
B. 3
C. 9
D. 10
E. The crista galli is not labeled on this figure.
D
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The hypothalamo-hypophyseal portal system
a. carries anterior pituitary hormones from the anterior pituitary gland to the hypothalamus to regulate the release of hypophysiotropic hormones. b. diverts blood directly to the pituitary, completely bypassing the hypothalamus. c. carries hypophysiotropic hormones from the hypothalamus to the anterior pituitary to regulate anterior pituitary hormone secretion. d. carries the anterior pituitary hormones into the general systemic circulation. e. connects the hypothalamus and posterior pituitary.
Positive selection of lymphocytes refers to the
A. proliferation of natural killer cells. B. replication of memory cells. C. production of antigen-specific antibodies. D. processing of an antigen by a macrophage. E. survival of pre-B and pre-T cells that are capable of an immune response.
The predominant lipid in the cell membrane is a
A. triglyceride. B. glycolipid. C. phospholipid. D. prostaglandin. E. cholesterol.
In action potential, what happens to potassium ions during repolarization?
What will be an ideal response?