Straighterline Anatomy and Physiology 1 BIO201 Topic 9: Muscular System Histology and Physiology Quiz 2023

Straighterline Anatomy and Physiology 1 BIO201 Topic 9: Muscular System Histology and Physiology Quiz 2023 Hello We are a team of experts offering course attendance for all Straighterline, Portage Learning, Sophia etc courses. We also write essays, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (908) 954-4829. Guaranteed Passing!  BIO201_MH_V3  Topic 9: Muscular System Histology and Physiology Started on Saturday, June 10, 2023, 7:37 AM State Finished Completed on Saturday, June 10, 2023, 8:02 AM Time taken 25 mins 24 secs Grade 35.00 out of 35.00 (100%) Question 1 Correct 1.75 points out of 1.75 Flag question Question text Which of the following is NOT a function of skeletal muscle? Select one: a. body movementb. maintenance of posture c. Dilating and constricting the pupil of the eye d. Carry out breathing movements e. production of heat Question 2 Correct 1.75 points out of 1.75 Flag question Question text Visceral smooth muscle Select one: a. may contain groups of cells that function as an independent unit. b. occurs in sheets and exhibits numerous gap junctions. c. contracts only when stimulated. d. does not function as a unit. e. All of these choices are correct. Question 3 Correct 1.75 points out of 1.75 Flag question Question text Which type of muscle tissue possesses striations? Select one: a. skeletal muscle b. smooth muscle c. cardiac muscle d. both skeletal and cardiac muscle e. both cardiac and smooth muscle Question 4Correct 1.75 points out of 1.75 Flag question Question text What type of muscle tissue has neuromuscular junctions? Select one: a. skeletal muscle b. smooth muscle c. cardiac muscle Question 5 Correct 1.75 points out of 1.75 Flag question Question text Which type of muscle tissue would cause flexion and extension of the arm? Select one: a. skeletal muscle b. smooth muscle c. cardiac muscle Question 6 Correct 1.75 points out of 1.75 Flag question Question text Which type of muscle tissue is multinucleated? Select one: a. skeletal muscleb. smooth muscle c. cardiac muscle d. both skeletal and cardiac muscle e. both cardiac and smooth muscle Question 7 Correct 1.75 points out of 1.75 Flag question Question text Why does muscle activity affect the temperature of the body? Select one: a. The rate of chemical reactions increases in muscle fibers during contraction, so the rate of heat production also increases. b. Muscle contraction generates pyrogens which reset the body's internal thermostat to a higher temperature. c. Muscle activity directs more warm blood to the muscles away from the central core causing a cooling effect on your internal organs. d. Increased muscle activity causes a rise in adipose stores which increases the insulation value of the body. Question 8 Correct 1.75 points out of 1.75 Flag question Question text As muscle activity increases, the body temperature _____. Select one: a. decreases b. increase Question 9 Correct1.75 points out of 1.75 Flag question Question text The capacity of a muscle cell to shorten forcefully is known as Select one: a. contractility. b. excitability. c. extensibility. d. elasticity. e. flexibility. Question 10 Correct 1.75 points out of 1.75 Flag question Question text Muscles exhibit the property of excitability. This means that the muscle Select one: a. shortens its length. b. recoils to its original resting length. c. stretches beyond its normal length. d. responds to stimulation by the nervous system. e. excites itself. Question 11 Correct 1.75 points out of 1.75 Flag question Question textWhat does "A" represent on the diagram? Select one: a. threshold b. depolarization c. depolarization phase of action potential d. repolarization phase of action potential Question 12 Correct 1.75 points out of 1.75 Flag question Question text Excitation-contraction coupling begins with: Select one: a. the depolarization of the transverse tubules b. the production of an action potential in the sarcolemma c. the release of calcium from the sarcoplasmic reticulum d. the release of the cross-bridge Question 13 Correct 1.75 points out of 1.75 Flag question Question text In order for muscle relaxation to occur, Select one: a. calcium ions must be transported to troponin. b. power strokes slow down. c. the active sites on actin must be blocked.d. sodium ions must be actively transported to troponin. e. the active sites on myosin must be uncovered. Question 14 Correct 1.75 points out of 1.75 Flag question Question text Which of the following is true? Select one: a. The greater the overlap of actin and myosin, the stronger the contraction. b. Overstretching a muscle will increase its tension. c. Optimal actin and myosin overlap will produce maximal contraction. d. The greatest amount of tension is achieved when actin and myosin do not overlap. e. Tension is great when actin and myosin overlap as much as they can. Question 15 Correct 1.75 points out of 1.75 Flag question Question text When repolarization of the cell membrane is complete, the Select one: a. cell dies. b. cell regenerates. c. cell no longer has a potential difference across its membrane. d. cell is no longer responsive. e. original polarity of the cell is restored. Question 16 Correct 1.75 points out of 1.75Flag question Question text The type of muscle fatigue known as "psychological fatigue" is the result of Select one: a. depleted ATP reserves. b. increased calcium ion concentration in the sarcoplasm. c. decreased levels of acetylcholine. d. the emotional state of an individual. e. None of these choices is correct. Question 17 Correct 1.75 points out of 1.75 Flag question Question text Physiological contracture Select one: a. occurs when muscles are resting. b. is a condition in which cross-bridges cannot release. c. is caused by an abundance of ATP in muscle fibers. d. results when muscles are well exercised. e. results when the neurotransmitter remains in the receptor. Question 18 Correct 1.75 points out of 1.75 Flag question Question text Anabolic steroids can do all of the following exceptSelect one: a. increase muscle size and strength. b. cause testicular atrophy. c. cause cardiovascular disease. d. increase the number of muscle fibers. e. increase total muscle mass. Question 19 Correct 1.75 points out of 1.75 Flag question Question text You are hired to work in a laboratory to measure the rate of human muscle contraction. Which of the following might decrease in quantity in muscle cells undergoing contractions? Select one: a. ATP b. carbon dioxide c. water d. lactic acid e. sodium Question 20 Correct 1.75 points out of 1.75 Flag question Question text Atrophy at the neuromuscular junction that naturally occurs with age would have what effect on muscles? Select one: a. It would stimulate the nervous system to increase the speed in which it sends action potentials to the myofiber. b. It would stimulate muscle cramps.c. It would decrease the number of action potentials sent to the myofiber. d. It would cause an increase in the amount of ACh released by the neurons to compensate. e. It would have no effect on the muscles.