The lever system at the elbow joint provides a mechanical advantage so that when the biceps muscle contracts to flex the elbow joint and lift an object in the hand, the force developed in the biceps can be considerably less than the actual load that is moved
Indicate whether the statement is true or false
F
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Myosin is considered to be a regulatory protein because it plays an important role in the regulation of muscle contraction
Indicate whether the statement is true or false
As blood is pumped out of the heart and into the major arteries leaving the heart, it
A. pushes against the semilunar valves and opens them. B. pushes against the semilunar valves and closes them. C. fills the cusps of the semilunar valves, causing them to expand and block the backflow of blood D. pushes against the atrioventricular valves and opens them. E. fills the cusps of the atrioventricular valve causing opening of the bicuspid and closure of the tricuspid.
Gray matter derives its color from the myelinated axons that compose it.
Answer the following statement true (T) or false (F)
Match the secretion with the correct cell type.A. Endocrine cellsB. HepatocyteC. Parietal cellsD. Acinar cellsE. Goblet cellsBile
Fill in the blank(s) with the appropriate word(s).