of \'hee FOCUS Excitation-Contraction Coupling Your patient, Ms. Young. presents

Question

of 'hee FOCUS Excitation-Contraction Coupling Your patient, Ms. Young. presents to physical therapy for evaluation and treatment of painful muscle spasms (sustained muscle contractions) in the muscles f h oulder. You notice upon evai a 'de mos evaluation that Ms. Young has decreased strength in her right shoulder compared with her left shoulder, which has no muscle spasms. Explain this finding. (Hint: is a muscle in spasm at its natural length?) 6 Suppose a poison were able to block the gap junctions in the intercalated discs of cardiac muscle cells. How would this affect the ability of cardiac muscle tissue to perform its functions? When you walk outside into the bright daylight, the muscle cells of the irises in your eyes contract, constricting your pupils so that less light enters your eyes. Would you expect these muscle cells to be striated or smooth? Explain your reasoning 7

Explanation / Answer

Q6. The neuromuscular junction consists of three parts the axon terminal which contains synaptic vessicles with the neurotransmitter. 2, the Motor End Plate of a muscle fibre. 3. The outer-layer of the muscle cell is called the synaptic cleft

Q7. Excitation Contraction coupling refers to relationship between sarcolemma at and release of calcium ions from the terminals of cisternae of then sarcoplasmic reticulum

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