The normal site of fertilization is the
a. ovary.
b. uterus.
c. oviduct.
d. vagina.
e. fimbria.
C
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Which of the following events occurs after all the other steps listed when describing the stimulation of a skeletal muscle fiber?
a. ACh binds with receptors on the muscle cell membrane, opening sodium channels. b. ACh diffuses across the cleft of the junction. c. ACh is released by exocytosis. d. Calcium diffuses into the terminal button. e. Voltage-gated channels for calcium in the axon terminal are opened.
Which blood type is compatible with B? during a transfusion?
A) O+ B) O? C) AB? D) B+
When a person is exposed to temperature extremes, why is it difficult to distinguish hot from cold objects?
A. At extremes, pain receptors are stimulated by both very hot and very cold objects. B. Temperature perception requires more than one type of receptor. C. Most temperature receptors cannot differentiate hot from cold. D. Pain receptors are inhibited by both very hot and very cold objects. E. Temperatures above 37 degrees centigrade actually stimulate the cold receptors.