In vivo, muscles are usually positioned at a relaxed length that is approximately 80% of their optimal length which maximizes contraction strength
Indicate whether the statement is true or false
FALSE
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The decline in physical strength of older persons is due to ________.
A. decreased size of fast-twitch fibers B. reduced muscle mass C. reduced density of blood capillaries D. All of the choices are correct.
Gastric pits are
A) ridges in the body of the stomach. B) involved in absorption of liquids from the stomach. C) openings into gastric glands. D) acid scars in the esophagus. E) hollows where proteins are stored.
During a baseball game, Eddie experienced a rotator cuff injury that benched him for the rest of the season. Eddie's doctor said he would be sitting out to let the SITS muscles heal. What four muscles did his doctor reference?
What will be an ideal response?
A 65-year-old female with a smoking history of 2 packs/day for 30 years has been diagnosed with chronic obstructive lung disease. She most likely has increased mucus viscosity due to:
A. bronchoconstriction B. stimulation of parasympathetic fibers in bronchial glands C. stimulation of the sympathetic nerves D. abnormal breathing pattern E. stimulation of smooth muscles