After delivery, the uterus shrinks to its pregestational size, a process known as __________, which takes 4 to 6 __________ to complete
Fill in the blank(s) with correct word
involution; weeks
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The structure labeled 2 in the diagram is a
a) somatic motor neuron. b) parasympathetic preganglionic neuron. c) parasympathetic postganglionic neuron. d) sympathetic preganglionic neuron. e) somatosensory neuron.
Once cells in the SA node reach threshold,
A) a heart attack occurs. B) the heart stops beating. C) nothing happens until the AV node is innervated. D) an action potential is triggered.
List the organs or structures that a sperm will pass through after leaving the testes: 1. Ductus deferens 2. Urethra 3. Epididymis
A) 3, 1, 2 B) 1, 2, 3 C) 1, 3, 2 D) 3, 2, 1
If a person is injected with a toxin that blocks acetylcholine receptors, which of the following will occur?
A. The toxin will have no effect on muscle action. B. The sarcolemma will be constantly stimulated, and muscles will continually contract. C. Spastic paralysis will result. D. Stimulation of the sarcolemma will not be possible, and muscles will be paralyzed. E. The person will develop myasthenia gravis.