Neurulation is the development of the nervous system from the
A. ectoderm.
B. mesoderm.
C. hypoderm.
D. endoderm.
Answer: A
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The hilum of the lung
A. is an indented area through which the bronchi, pulmonary vessels, lymphatic vessels, and nerves pass. B. is the point of exit of exhaled air. C. is the point of entrance for inhaled air. D. is an elevated area through which the trachea, pulmonary vessels, and nerves pass. E. serves to anchor all pulmonary structures to the mediastinum.
How do the cells of the suprarenal medulla differ from other glandular cells?
A) They do not differ from other cells. B) They are chief cells that have migrated from the kidneys. C) They are a modified parasympathetic ganglion. D) They form from modified sympathetic ganglionic neurons. E) None of the answers are correct.
Which of the following statements is NOT TRUE?
A. Carbonic anhydrase is released from RBCs during hyperventilation B. Hyperventilation increases blood pH C. Increased pCO2 stimulates chemoreceptor reflex to activate the inspiratory area D. Hypoventilation decreases blood pH
What is the best graft to have so as to avoid rejection of a transplanted tissue?
A) an autograft B) a graft from a recently deceased individuals C) a graft from another primate D) a xenograft E) an allograft