0 d acetylcholine binds to post synaptic receptors on

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Unformatted text preview: dium channels. 0% G. Opening of the voltage-gated sodium channels. 100% H. Opening of potassium channels. 0% I. Binding of calcium ions to Troponin C. 0% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.66/0.66 14. What event causes depolarization of the sarcolemma at the neuromuscular junction? Student Response Value A. Calcium ions enter the axon 0% B. Calcium ions enter the sarcoplasm from the sarcoplasmic reticulum. 0% C. Acetylcholine is released into the synaptic cleft by exocytosis. 0% D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. 0% E. Na+ moves across the sarcolemma out of the muscle cell. 0% F. Opening of the chemically-gated sodium channels. 100% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 0% I. Binding of calcium ions to Troponin C. 0% J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. 0% Score: 0.66/0.66 15. Which of the following binds calcium ions: Student Response Value A. sarcoplasmic reticulum 50% B. troponin C 50% C. myosin 0% D. all of the above 0% E 1 and 2, but not 3 100% Student Response Value . Score: 0.66/0.66 Jump to Navigation Frame Your location: Assessments › View All Submissions › View Attempt View Attempt 1 of 2 Title: Quiz #6 - Muscle Identification Started: April 7, 2008 12:28 PM Submitted: April 7, 2008 12:50 PM Time spent: 00:21:39 Total score: 8.4/10 = 84% Total score adjusted by 0.0 Maximum possible score: 10 1. Match the muscle with its description. serratus anterior Retracts and fixates the scapula if the head is fixed. rhomboid major and minor protracts the scapula, as in throwing a punch. infraspinatus Adducts and fixates the scapula. levator scapulae The only muscle of the group which does not move the scapula. trapezius Instrumental in shrugging the shoulder. Statement Response Value serratus anterior protracts the scapula, as in throwing a punch. 20.0% rhomboid major and minor Adducts and fixates the scapula. 20.0% infraspinatus The only muscle of the group which does not move the scapula. 20.0% levator scapulae Retracts and fixates the scapula if the head is fixed. 0.0% trapezius Instrumental in shrugging the shoulder. 0.0% Score: 1.2/2 2. Match the muscles with their descriptions. sternocleidomastoid Elevates the mandible to close the jaw. splenius capitus Elevates the ribcage in forced inspiration if head is fixed. scalenes Acting bilaterally with its pair it protracts and flexes the head. trapezius The upper portion of this muscle extends the head only if the scapula is fixed. temporalis Acting bilaterally with its pair it extends the head and neck. Statement Response Value sternocleidomastoid Acting bilaterally with its pair it extends the head and neck. 0.0% splenius capitus Acting bilaterally with its pair it protracts and flexes the head. 0.0% scalenes Elevates the ribcage in forced inspiration if head is fixe...
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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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