Value 0 b lacunae 0 c blood vessels 0 d haversian

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Unformatted text preview: damage to articular cartilage from stress or injury is called: Student Response A. rheumatoid arthritis B osteoarthritis Value 0% 100% Student Response Value . C. bursitis 0% D. gouty arthritis 0% Score: 0.67/0.67 8. In the structural hierarcy of a muscle, each cell is filled with contractile structures called: Student Response A. myofilaments B myofibrils . Value 0% 100% C. myofibers 0% D. myosin 0% Score: 0.67/0.67 9. The intervertebral disks are which type of joint classified according to structure? Student Response A. fibrous 0% B cartilaginous . C. synovial Score: Value 100% 0% 0.67/0.67 10. 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 . Value 0% 100% C. the T-tubules 0% D. the sarcoplasmic reticulum 0% Score: 11. 0.67/0.67 The intervertebral disks are what type of joint, classified by movement? Student Response A. synarthrosis B amphiarthrosis . C. diarthrosis Score: Value 0% 100% 0% 0.67/0.67 12. In order for myosin heads to detach from actin and reset, _____ must be available. Student Response A. Ca+2 Value 0% B ATP . 100% C. ADP and Pi 0% D. ACh 0% Score: 0.67/0.67 13. The term _____ means that a muscle will tend to return to its resting length after contracting. Student Response Value A. contractility 0% B. excitability 0% C elasticity . D. extensibility Score: 100% 0% 0.67/0.67 14. A syndesmosis is actually a small _____ which connects bones in a non-movable way. Student Response A. tendon B ligament . Value 0% 100% C. aponeurosis 0% D. retinaculum 0% Score: 0.67/0.67 15. Which type of arthritis involves the greatest degree of inflammation and disability? Student Response Value A. rheumatoid arthritis 100% B. osteoarthritis 0% C. bursitis 0% D. gouty arhtritis 0% Score: 0.67/0.67 Jump to Navigation Frame Your location: Assessments › View All Submissions › View Attempt View Attempt 1 of 2 Title: Quiz #5 - Stimulus-Contraction Coupling Started: March 24, 2008 1:36 PM Submitted: March 24, 2008 2:06 PM Time spent: 00:30:20 Total score: 6.01/10 = 60.1% Total score adjusted by 0.0 Maximum possible score: 10 1. What event causes repolarization of the sarcolemma? 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 into the muscle cell. 0% F. Opening of the chemically-gated sodium channels. 0% G. Opening of the voltage-gated sodium channels. 0% H. Opening of potassium channels. 100% 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: 2. 0/0.67 What is the next thing which happens after an impulse enters the T tubules? Student Response A. Calcium ions...
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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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