Which receptor is involved in detecting changes in body position?
a. Pacinian corpuscle
b. free nerve endings
c. muscle spindle
d. Merkel’s discs
e. Meissner’s corpuscle
ANSWER: c
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Unlike plant cells, animal cells move during development. Which of the following terms describes the reorganization of undifferentiated cells that results in the formation of an embryonic structure with multiple layers?
A. blastulation B. gastrulation C. organogenesis D. cleavage
The net difference in electrical charge inside compared with outside the neuron____
Fill in the blank(s) with the appropriate word(s).
Cigarette smoking causes ____
a. a decrease in mucus production b. an increase in the number of phagocytes c. slow bone healing d. an increase in the amount of cilia lining the airways e. an increase in the birth weight of newborns of mothers who smoke
Which of the following characteristics is not associated with cardiac muscle?
A) intercalated discs B) electrical coupling by gap junctions C) involuntary nervous control D) fusion of cardiomyocytes into large multinucleated myofibers E) striations