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Unformatted text preview: D. temporal Score: 16. Value 0% 0% 0% 100% 0.5/0.5 eccrine glands Which of the following is important in thermoregulation? Feedback Student Response A. eccrine sweat glands Value 100% B. C. D. E. 0% 0% 0% 0% apocrine sweat glands sebaceous glands Answers 1 and 3 Answers 2 and 3 Score: 17. Feedback 0.5/0.5 action potential In order to produce an action potential on the sarcolemma, depolarization at the neuromuscular junction must activate: Student Response A. chemically-gated ion channels B. voltage-gated ion channels 0% 100% C. the T-tubules D. the sarcoplasmic reticulum 0% 0% Score: 18. Value Feedback 0.5/0.5 melanoma The most agressive skin cancer is: Student Response A. malignant melanoma Value 100% B. squamous cell carcinoma C. basal cell carcinoma 0% 0% Score: 19. Feedback 0.5/0.5 Voltage gated Na+ channels open. As a result of threshold depolarization at the neuromuscular junction, what happens on the adjacent sarcolemma? Student Response A. Calcium ions enter the axon B. Calcium ions enter the sarcoplasm from the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma into the muscle cell. F. Opening of the chemically-gated sodium channels. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. Binding of calcium ions to Troponin C. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: 0.5/0.5 Value 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% Feedback 20. medulla The centers which control the heart, respiratory muscle contraction, and vascular smooth muscle are located in the: Student Response medulla oblongata A. B. pons varoli C. pineal body D. midbrain E. corpora quadrigemia Value 100% Feedback 0% 0% 0% 0% 0.5/0.5 Score: 1. Shifting of the troponin-tropomyosin complex. As a direct result of Ca+2 binding to troponin: Student Response Value A. Calcium ions enter the axon 0% B. Calcium ions are pumped back into the 0% sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft 0% by exocytosis. D. Acetylcholine binds to post-synaptic receptors 0% on the sarcolemma. E. Na+ moves across the sarcolemma into the 0% muscle cell. F. Breakdown of ACh by AChase. 0% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 0% The troponin-tropomyosin complex shifts, 100% I. exposing the active sites on actin. J. Uptake of ATP by the myosin heads. 0% K. Attachment of actin-myosin crossbridges and 0% swiveling of the myosin heads. Score: Feedback 0.5/0.5 2. recoil The term _____ means that a muscle will tend to return to its resting length after contracting. A. contractility B. excitability C. elasticity Student Response Value 0% 0% 100% D. extensibility 0% Score: Feedback 0.5/0.5 3. inhibition Prior sub-threshold hyperpolarization of a reflex pathway produces: Student Response A. facilitation B....
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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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