The characteristic that makes the muscle cells unique is the relative abundance and organization of
A. collagen fibers.
B. gelatinous mass.
C. actin and myosin fibers.
D. keratin fibers.
E. fibroblast cells.
C. actin and myosin fibers.
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Epinephrine is an example of _____
A) an androgen B) an estrogen C) a progestin D) a catecholamine E) a glucocorticoid
Four of the five answers listed below are produced by the same germ layer. Select the exception
a. nervous system b. muscle system c. circulatory system d. reproductive system e. excretory system
Over the past century, the Earth's climate has ________ by an estimated 0.74°C
Fill in the blank(s) with correct word
The primary function of lymph nodes in the circulatory system is in _________
a. regulation of blood pressure b. production of red blood cells c. production of platelets d. immunity e. gas exchange