Erection
a. involves dilation of the arterioles supplying the sponge-like vascular spaces of the penis
b. results from cGMP production induced by nitric oxide
c. occurs when the seminiferous tubules of the penis become engorged with sperm
d. occurs in response to sympathetic nervous stimulation of the penis
e. has both a and b characteristics
E
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Hyperventilation leads to
A. Respiratory acidosis B. Respiratory alkalosis C. Metabolic acidosis D. Metabolic alkalosis
Which of the following statements is true of a patient in metabolic acidosis?
a. More carbonic acid will be converted to CO2 and H2O during respiratory compensation b. Increased reabsorption of H? during metabolic compensation c. More carbonic acid will be converted to HCO?? and H? during respiratory compensation
The ion primarily responsible for depolarization in pacemaker cells is ______________, whereas the ion primarily responsible for this in other cardiac cells is _____________
A. sodium; calcium B. calcium; sodium C. potassium; sodium D. calcium; potassium
Match the appropriate characteristic with the type of immunity.A. Innate immunityB. Antibody-mediated immunityC. Cell-mediated immunityD. Both antibody-mediated and cell-mediated immunityE. Innate immunity, antibody-mediated immunity, and cell-mediated immunityProtection against intracellular antigens
Fill in the blank(s) with the appropriate word(s).