The muscle that serves as the "prime mover" during a movement is called the
a) antagonist.
b) agonist.
c) synergist.
d) asynergist.
e) fixator.
b
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After an infection, many dead and fragmented bacterial cells must be filtered from the body. Which of the following cells will clear out the cell debris?
A. Macrophages B. Mast cells C. Lymphocytes D. Cytokines
Microfilaments
A) are usually composed of myosin. B) are hollow, filamentous structures. C) anchor the cytoskeleton to integral proteins of the cell membrane. D) interact with filaments composed of tubulin to produce muscle contractions. E) are found in the cytoplasm radiating away from the centrosome.
Which of the following ECG components decreases in length during exercise?
A) Q-T interval B) T wave C) QRS complex D) P-R segment
________ transport requires the input of energy, whereas ________ transport does not
A) Active; membrane B) Passive; active C) Active; passive D) Membrane; passive