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Unformatted text preview: order to produce an action potential on the sarcolemma, depolarization at the neuromuscular junction must activate: A. chemically-gated ion channels
B. voltage-gated ion channels Student Response Value
100% C. the T-tubules
D. the sarcoplasmic reticulum 0%
0% Score: Correct Answer 0.67/0.67 8. Which type of arthritis involves the greatest degree of inflammation and disability?
A. rheumatoid arthritis
D. gouty arhtritis
100% Correct Answer 0%
0% 0.67/0.67 9. All true diarthrotic joints have a joint capsule composed of:
A. serous membrane
B. a ligament
C. a retinaculum
D. synovial membrane
100% Correct Answer Value
100% Correct Answer 0.67/0.67 10. The sarcolemma is polarized because more _____ are pumped out than ___ are pumped in.
A. Na , and K B. K+ and Na+
C. Na+ and Ca+2
D. Ca+2 and Na+
Score: 11. 0.67/0.67 0%
0% The series elastic elements of a muscle are composed of the various connective tissues and proteins including the protein _____. A. myosin
C. titin Student Response Value
100% D. collagen
E. elastin 0%
0% Score: Correct Answer 0.67/0.67 12. In order for myosin heads to detach from actin and reset, _____ must be available. A. Ca+2
B. ATP Student Response Value
100% C. ADP and Pi
D. ACh 0%
0% Score: Correct Answer 0.67/0.67 13. The _____ are intracapsular ligaments which help to prevent anteroposterior displacement and twisting of the knee.
Student Response Value A. medial and lateral collateral ligaments
B. medial and lateral retinacula
C. medial and lateral menisci
D. anterior and posterior cruciate ligaments Correct Answer 0%
100% Score: 0/0.67 14. A sack made of synovial membrane which lies between tendons, ligaments, and nearby bones is called: A. a bursa Student Response Value
100% B. a retinaculum
C. a syndesmosis
D. a synchondrosis 0%
0% Score: 0.67/0.67 Correct Answer 15. The term _____ means that a muscle will tend to return to its resting length after contracting.
Student Response Value A. contractility
C. elasticity 0%
100% D. extensibility Correct Answer 0% Score: 0.67/0.67 Jump to Navigation Frame
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score: Quiz #5 - Stimulus-Contraction Coupling
March 15, 2007 9:23 PM
March 15, 2007 9:52 PM
5.34/10 = 53.4% Total score adjusted by 0.0 Maximum possible score: 10 1. What event causes repolarization of the sarcolemma?
A. Calcium ions enter the axon
H. Calcium ions enter the sarcoplasm from the sarcoplasmic reticulum.
Acetylcholine is released into the synaptic cleft by exocytosis.
Acetylcholine binds to post-synaptic receptors on the sarcolemma.
Na+ moves across the sarcolemma into the muscle cell.
Opening of the chemically-gated sodium channels.
Opening of the voltage-gated sodium channels.
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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.
- Fall '12