By varying the number of ________ activated at any one time, the nervous system provides precise control over the pull exerted by the muscle.
Fill in the blank(s) with the appropriate word(s).
motor units
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Goblet cells in the mucosa of the large intestine produce mucus to lubricate the passage of feces
Indicate whether the statement is true or false
Substances can enter a cell either with or against the concentration gradient by ________ transport, which is powered by ________.
A. passive; electrolytes B. active; ATP C. active; electrolytes D. passive; ATP
Which one of the following bone cells would have the greatest number of lysosomes?
A. Osteocytes B. Osteoblasts C. Stem cells D. Osteoclasts E. Osteogenic cells
Metabolism is the sum of ________ and ________
A) inhalation; exhalation B) growth; differentiation C) positive; negative feedback D) responsiveness; movement E) anabolism; catabolism