In the postabsorptive state, the central nervous system uses which of the following as its PRIMARY source of energy?
a. fatty acids
b. amino acids
c. glucose
d. glycerol
e. ketones
Answer: a. fatty acids
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Secretes acid and enzymes; mixes food with secretions to begin enzymatic digestion of proteins
What will be an ideal response?
________ secrete ________ into ________
A) Goblet cells; mucus; the blood B) Endocrine glands; hormones; ducts C) Exocrine glands; hormones; ducts D) Exocrine glands; mucus; the blood E) Endocrine glands; hormones; the blood
Red blood cells, or ____________________, are biconcave, disc-shaped cells.?
Fill in the blank(s) with correct word
The muscle weakness of myasthenia gravis results from
A) insufficient acetylcholine release from presynaptic vesicles. B) loss of acetylcholine receptors in the end-plate membrane. C) the motor neuron action potential being too small to shock the muscle fibers. D) excessive acetylcholinesterase that destroys the neurotransmitter. E) All of the answers probably contribute to the muscle weakness.