Answer the following statements true (T) or false (F)
1. The expiratory center is located in the pons.
2. The cerebral cortex is responsible for the voluntary increase or decrease in breathing rate.
3. When stretch receptors in the lungs are stimulated, an inhibitory impulse is sent to the expiratory center in the brain.
4. Carotid bodies are sensitive to oxygen concentration, carbon dioxide concentration, and acid concentration in the blood.
5. Eupnea refers to difficulty or labored breathing.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. FALSE
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The ingredients listed on the label of a packaged food
A) are listed from most to least tasty. B) are listed in increasing order by weight. C) are listed alphabetically. D) are listed in decreasing order by weight.
A retinal OFF-center bipolar cell:
A. depolarizes in response to a light in the center of its receptive field B. has metabotropic glutamate receptors that close Na+ channels C. depolarizes in response to a light in the periphery of its receptive field D. is hyperpolarized by horizontal cell input E. connects to ganglion cells but not horizontal cells
Chronic vomiting can lead to which of the following?
A) Lymphatic alkalosis B) Metabolic alkalosis C) Metabolic acidosis D) Respiratory acidosis E) Respiratory alkalosis
Which of the following is the mechanism in which skeletal muscles assist venous return of blood to the heart?
A. Cardiac suction B. Gravity C. Contraction of limb muscles D. Pressure gradient