During paradoxical sleep,
A. brain neurotransmitter activity in the pathways regulating states of consciousness is similar to that in the awake state.
B. brain oxygen consumption is lower than when awake.
C. skeletal muscle tension is dramatically increased.
D. the person is easily aroused.
E. All of the choices occur.
A
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Asthma is
A) a collapsed lung resulting from insufficient production of surfactant. B) due to an excessive stimulation of smooth muscle in bronchioles. C) an obstructive tumor targeting primarily the terminal bronchioles. D) characterized by fluid buildup in the alveoli. E) caused by Mycobacterium tuberculosis.
The stomach is different from other digestive organs in that it
A) has folds in the mucosa. B) has three layers of muscle in the muscularis externa. C) secretes digestive juice. D) moves by peristalsis. E) secretes digestive hormones.
Which type of connective tissue does NOT fit with the typical characteristic regarding relative cell density?
A) dense B) blood C) bone D) adipose E) cartilage
In which process of cellular respiration is water produced?
A) citrate synthesis B) electron transport chain C) glycolysis D) citric acid cycle