Calcium ions are pumped back into the sarcoplasmic

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Unformatted text preview: intensity on the body's soma. 100% C. Many neurons functioning at the same time. D. Both #1 and #3. Score: Feedback 0% 0% 0.5/0.5 9. Broca's area Broca's area is located alongside the: Student Response A. Upper portion of the pre-central gyrus. B. Lower portion of the pre-central gyrus. Value 0% 100% C. Upper portion of the post-central gyrus. D. Lower portion of the post-central gyrus. 0% 0% Score: Feedback 0.5/0.5 10. central sulcus The _____ separates the mainly motor from the mainly sensory portions of the cerebrum. Student Response A. longitudinal sulcus B. transverse sulcus C. central sulcus Value 0% 0% 100% Feedback Student Response D. lateral sulcus Score: Value Feedback 0% 0.5/0.5 11. Ca<sup>+2</sup> release Ca+2 is released into the sarcoplasm when an action potential stimulates the: Student Response A. sarcolemma B. T-tubules C. sarcoplasmic reticulum Value 0% 0% 100% D. myosin heads 0% Score: Feedback 0.5/0.5 12. periosteum Once completely hardened, osteoprogenitor cells must come from the _____ for bone repair. Student Response A. Sharpey's fibers B. red marrow C. yellow marrow D. periosteum Score: Value Feedback 0% 0% 0% 100% 0.5/0.5 13. muscle spindle A muscle spindle receptor responds to: Student Response A. stretch and extension of the muscle. B. contraction of the muscle C. pain and other noxious stimuli D. signals from lower motor neurons. Score: 14. 0/0.5 Value 100% 0% 0% 0% Feedback eccrine glands Which of the following is important in thermoregulation? Student Response A. eccrine sweat glands Value 100% B. C. D. E. 0% 0% 0% 0% Score: apocrine sweat glands sebaceous glands Answers 1 and 3 Answers 2 and 3 Feedback 0.5/0.5 15. Breakdown of ACh by Achase Which event, required for continued function of the neuromuscular junction, is prevented by certain pesticide and nerve gas poisons? Student Response A. Calcium ions enter the axon B. Calcium ions are pumped back into 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. Breakdown of ACh by AChase. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. The troponin-tropomyosin complex shifts, exposing the active sites on actin. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: Value Feedback 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 0% 0.5/0.5 16. Chemically gated Na<sup>+</sup> channels open. 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 0% sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft 0% Feedback Student Response by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma out of the muscle cell. F. O...
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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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