Endoplasmic reticulum with ribosomes attached to it is called ________ ER.
A. smooth
B. nodular
C. dendritic
D. rough
E. bumpy
Answer: D
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The epithelial tissue root sheath is the _________ layer of the concentric layers making up the hair follicle wall; it derives from the ________
A. inner; epidermis B. inner; dermis C. outer; epidermis D. outer; dermis
The limbic association cortex is involved with motivation and emotion
Indicate whether the statement is true or false
Which statement is incorrect about cross bridges?
a. They are globular myosin heads that protrude from the thick filaments. b. They bend during muscle contraction. c. They attach and detach from actin during muscle contraction. d. They are not found in the I band. e. They bind with troponin during contraction.
Which statement regarding graded potentials is false?
a. they are decremental. b. they travel only short distances. c. they are self-propagating. d. they may contribute to the development of an action potential. e. they travel in both directions along the membrane.