8. What is saltatory conduction? (A) conduction of impulses across electrical synapses (B) an action potential that skips the axon hillock in moving from the dendritic region to the axon terminal (C) rapid movement of an action potential reverberating back and forth along a neuron (D) jumping from one node of Ranvier to the next in a myelinated neuron (E) jumping from one neuron to an adjacent neuron

8. What is saltatory conduction?
(A) conduction of impulses across electrical synapses
(B) an action potential that skips the axon hillock in moving from the dendritic region to the axon terminal
(C) rapid movement of an action potential reverberating back and forth along a neuron
(D) jumping from one node of Ranvier to the next in a myelinated neuron
(E) jumping from one neuron to an adjacent neuron

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統計： A(0), B(1), C(0), D(2), E(0) #3853313

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2026/04/03

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13. Suppose a person begins breathing very rapidly while resting (hyperventilating), which of the following best describes how homeostasis is restored? (A) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The frontal cortex detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (B) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The hypothalamus detects the change and decreases stimulation of the rib muscles and the diaphragm, thereby reducing the breathing rate. (C) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The hypothalamus detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (D) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (E) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate.

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