A 21 consists of three proteins b 22 its heads swivel

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Unformatted text preview: the sarcolemma. E. Na+ moves 0% across the sarcolemma into the muscle cell. F. Opening of 0% the chemicallygated sodium channels. G. Opening of 0% the voltagegated sodium channels. H. Opening of potassium channels. 0% I. Binding of 100% calcium ions to Troponin C. J. Uptake of ATP by the myosin heads. 0% K. Attachment of 0% actin-myosin crossbridges and swiveling of the myosin heads. Score: 41. 0/1 action potential 7 This is the point where repolarization begins. Student Response 1. A Value 0% Correct Answer Feedback Student Response Value 2. B 100% 4. D 0% 5. E 0% 6. F 0% 7. G 0% Score: 42. Feedback 0% 3. C Correct Answer 1/1 action potential 3 Which letter indicates the absolute refractory period? Student Response Value 1. A 0% 3. C 0% 4. D 0% 5. E 0% 6. F 100% 7. G 0% Score: 43. Feedback 0% 2. B Correct Answer 1/1 connective tissues d A _____ is a tendinous structure that prevents the displacement of other tendons or ligaments and holds them in their normal positions. Student Response Value A. epimysium 0% B perimysium . 0% C. endomysium 0% D. retinaculum Score: 44. 0/1 forced inspiration 100% Correct Answer Feedback The sternocleidomastoid and scalenes work together with the _____to raise and expand the ribcage in forced inspiration. Student Response Value 1. pectoralis major 100% 3. teres major 0% 4 teres minor . 0% Score: 45. Feedback 0% 2. pectoralis minor Correct Answer 0/1 contractile elements 1 In the structural hierarcy of a muscle, each cell is filled with contractile structures called: Student Response Value Correct Answer Feedback A. myofilaments 0% B myofibrils . 100% C. myofibers 0% D. myosin 0% Score: 46. 1/1 resting length Muscle fibers will return to their resting length due to their: Student Response Value A. contractility 0% C elasticity . D. extensibility Score: 47. Feedback 0% B. excitability Correct Answer 100% 0% 1/1 ion movement 1 The sarcolemma is polarized because more _____ are pumped out than ___ are pumped in. Student Response Value Correct Answer Feedback Student Response B. K+ and Na+ Value Correct Answer Feedback 0% C. Na+ and Ca+2 0% D. Ca+2 and Na+ 0% Score: 48. 1/1 latissimus dorsi 1 Which muscle is a synergist with the latissimus dorsi in its action on the brachium? Student Response Value 1. teres major 100% 2. rhomboid major 0% 3. rhomboid minor Correct Answer Feedback 0% 4 biceps brachii 0% . 5. triceps brachii 0% Score: 49. 0/1 muscle cell types C Fast twitch red (intermediate) fibers have: Student Response Value 1. stored myoglobin 25% 2. a rich blood supply 25% 3. many 25% mitochondria 4. stored glycogen 25% 5. All of the above 100% 6. Answers A, B, 75% and C only Score: 50. 0.75/1 muscle cell types 2 Correct Answer Feedback Slow twitch red fibers primarily utilize _____ to provide energy for metabolism. Student Response Value Correct Answer Feedback 1. the 0% phosphagen system 2. anerobic glycolysis 0% 3. aerobic metabolism 100% 4. all of the above 0% 5. answers A and B only 0% Score: 51. 1/1 muscle movements 5B An antagonist to the...
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.

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