HP_C10 Study Guide and Practice Questions

HP_C10 Study Guide and Practice Questions - Human...

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Human Physiology Chapter 10 – Muscle Tissue Study Guide This is the material you should know for the exam. Muscle functions? Characteristics of three muscle types? What is a bundle of muscle fibers called? What is the sarcolemma, the sarcoplasmic reticulum, and the sarcoplasm? What is a muscle fiber (a muscle cell)? What is the function of the sarcoplasmic reticulum and what is the significance of terminal cisternae? What are t-tubules and what do they conduct? Fascicles – muscle fibers – myofibrils – sarcomeres. What is a sarcomere, and what defines a sarcomere? What is the NMJ, motor end plates, motor unit? Would motor units for fine muscle control contain a large number of muscle fibers or not? What is the sliding filament theory of contraction? What happens to the sarcomeres during contraction? Be familiar with the molecular events of a contractile cycle. What is actin, myosin? What is a crossbridge? What is a powerstroke and what does it require? Be familiar with the events concerning the control of contraction. What is troponin and tropomyosin? Which blocks the binding site on actin? What happens when Ca++ are released and bind to troponin? What controls the release of Ca++? What neurotransmitter is released from the somatic motor neuron at the NMJ?
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