| 11. | It is composed of a single T-tubule paired with a terminal cisterna of the sarcoplasmic reticulum.
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| 12. | The L-type calcium channels are in close association with ryanodine receptors present on the sarcoplasmic reticulum.
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| 13. | While the muscle fiber does not have a smooth endoplasmic reticulum, it contains a sarcoplasmic reticulum.
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| 14. | The Ca2 + flows from the sarcoplasmic reticulum into the sarcomere with both of its filaments.
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| 15. | It is composed of a single t-tubule paired with a terminal cisterna of the sarcoplasmic reticulum.
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| 16. | Calcium is released from the sarcoplasmic reticulum into the sarcomere when a muscle is stimulated to contract.
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| 17. | The action potential then travels along T ( transverse ) tubules until it reaches the sarcoplasmic reticulum.
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| 18. | Cardiac muscle forms these instead of the triads formed between the sarcoplasmic reticulum in skeletal muscle and T-tubules.
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| 19. | IP 4 does not stimulate calcium influx through IP 3 receptor channels on the endoplasmic or sarcoplasmic reticulum.
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| 20. | The active pumping of ions into the sarcoplasmic reticulum creates a deficiency in the fluid around the myofibrils.
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