A&P Straighterline Final questions and answers well illustrated.

A&P Straighterline Final questions and answers well illustrated. An isotonic contraction is described as Select one: a. action potential frequency is high enough that no relaxation of muscle fibers occurs. b. a muscle produces constant tension during contraction. c. a muscle produces an increasing tension during contraction. d. a muscle produces increasing tension as it shortens. e. a muscle produces tension, but the length of the muscle is increasing - correct answers.b. a muscle produces constant tension during contraction. After contraction has occurred, the calcium is Select one: a. destroyed by cholinesterase. b. chemically bound to the cross bridges. c. secreted by the Golgi apparatus to the outside of the cell. d. released from troponin. e. returned to the sarcolemma. - correct answers.d. released from troponin. Increased strength of a trained muscle is due to Select one: a. an increased number of muscle fibers. b. the nervous system's ability to recruit a large number of motor units simultaneously. c. elimination of unnecessary enzymes and metabolic pathways. d. elimination of all fat deposits. e. elimination of unnecessary connective tissue. - correct answers.b. the nervous system's ability to recruit a large number of motor units simultaneously. Skeletal muscle fibers Select one: a. possess striations. b. can contract but are not extensible or excitable. c. do not require nerve innervation to contract. d. increase dramatically in number after birth. e. are found in the walls of the stomach. - correct answers.a. possess striations. Which of the following correctly describes myoglobin's special function in muscle tissue? Select one: a. breaks down glycogen b. synthesizes ATP c. acts as a reservoir for oxygen d. produces action potentials e. stores glucose - correct answers.c. acts as a reservoir for oxygen The outside of the resting plasma membrane is __________ relative to the inside of the resting plasma membrane. Select one: a. positively charged b. negatively charged c. electrically neutral d. recharged e. None of these choices is correct. - correct answers.a. positively charged Fascia Select one: a. surrounds individual muscles. b. separates muscle fibers. c. connects muscles to bone. d. is a type of muscle tissue. e. is a type of nerve tissue. - correct answers.a. surrounds individual muscles. When repolarization of the cell membrane is complete, the