A withdrawal reflex on one side of the body and a

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Unformatted text preview: . Na+ moves across the sarcolemma into the Value 0% 0% 0% 0% 0% Feedback Student Response 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% 100% 0% 0.5/0.5 6. Chemically gated Na<sup>+</sup> channels open. What event causes depolarization of the sarcolemma at the neuromuscular junction? 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 out of the muscle cell. F. Opening of the chemically-gated sodium channels. G. Opening of the voltage-gated sodium channels. H. I. J. K. Opening of potassium channels. Binding of calcium ions to Troponin C. Uptake of ATP by the myosin heads. 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% 0/0.5 7. hand rotation Starting in anatomical position, the hand is rotated so that the palm is down (or to the back). This movement is called: A. supination B. pronation Student Response Value 0% 100% C. elevation D. depression 0% 0% Score: 0.5/0.5 Feedback 8. receptive region criterion The criterion for an area being the neuron receptive region is: Student Response A. possessing chemically-gated ion channels B. possessing voltage-gated ion channels Value 100% 0% Feedback C. having both chemically-gated and voltage-gated 0% ion channels D. being able to propagate an action potential 0% Score: 0/0.5 9. vascularization Which of the following tissues is well vascularized and experiences true parenchymal repair? Student Response bone adipose cartilage all of the above E. Answers 1 and 2, but not 3. A. B. C. D. Score: Value 0% 0% 0% 0% 100% Feedback 0.5/0.5 10. Ossification Ossification begins at about _____ in the developing embryo. Student Response Value A. 4 weeks B. 8 weeks 0% 100% C. birth D. 1.5 to 2 years after birth 0% 0% Score: 0.5/0.5 11. connective sheath Feedback The _____ surrounds a muscle and fuses with a tendon or aponeurosis. A. epimysium Student Response Value 100% B. perimysium C. endomysium D. retinaculum 0% 0% 0% Score: Feedback 0.5/0.5 12. recoil The term _____ means that a muscle will tend to return to its resting length after contracting. Student Response Value A. contractility B. excitability C. elasticity D. extensibility Feedback 0% 0% 100% 0% Score: 0/0.5 13. melanoma The most agressive skin cancer is: Student Response A. malignant melanoma B. squamous cell carcinoma C. basal cell carcinoma Score: Value 100% Feedback 0% 0% 0.5/0.5 14. intracapsular ligaments The _____ are intracapsular ligam...
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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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