(2) Striations in muscle can be found in all of the following muscles except the
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(2) Striations in muscle can be found in all of the following muscles except the A. smooth muscle B. skeletal muscle C. cardiac muscle D. All muscles have striations. 3 Another name for skeletal muscle is visceral muscle B. involuntary muscle C. voluntary mascle D. smooth muscle 14. Which of the following statements about acesylcholine (ACh) is correct? A. ACh breaks down molecules of cholinesterase. B. ACh triggers the contraction of the muscle fiber C. ACh is a product of aerobic metabolism. D. ACh changes the permeability of the muscle to calcium. 15 The point where a nerve connects with a muscle fiber that it is going to stimulate is called the A. motor unit B. motor neuron C. neuromuscular junction D. neurotransmitter site 16.) For muscle contraction to stop, which of the following must be present? A. acetylcholine B. dopamine C. acetylcholinesterase D. acetylesterase 17. Which of the following ions rushes into the muscle cell to spread the action potential? A. calcium B. sodium C. D. chloride 18 Calcium ions are released from the A. actin B. myosir C. lysosome D. sarcoplasmic reticulum 19. What could potentially happen if the synapse did not have acetylcholinesterase available? A. Muscle would stop contracting. B. Muscle would not contract at all. C. Muscle would continue contracting D. Acetylcholinesterase has no impact on muscle contraction. 20. Which of the following is responsible for recharging the energy-spent ADP back to the high-energy ATP? A. cAMP B. creatine phosphate C. glucose D. oxygen 21) Afer death, the human body becomes stif tiom a lack of ATP production. This condition is referred to as sara C. paralysis A. tetanus B. myoclonus D. rigor mortis An oxygen-containing red pigment that is found within muscle fibers is called C. globin D. myoglobin B. creatine 23.) Which of the following muscle fibers contains more capillaries and has a greater oxygen supply? A. fast fibers C. slow fibers D. white fibers B. intermediate fibers 24 The muscle in the posterior arm that extends the elbow is the A. tricep B. bicep C. latissimus dorsi D. quadriceps 55 C2008 Pearso Education, Inc. Anstomy & lysiolegy for Emergency Care, 2nd nd CHAPTER 7 The Muscular SystemExplanation / Answer
12.A .Smooth muscles. 22.D. myoglobin
13.C.Volountary muscles 23.A.Fast fibers
14.B. triggers the contraction of muscles fiber 24.A.triceps
15.A .motor unit
16.C.Acetylcholinesterase
17.B.Sodium
18.D Sarcoplasmic reticulum
19.A. muscle will stop contracting
20.C.Glucose
21.D.Rigor mortise
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