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Chapter 11-1 A&P

QuestionAnswer
Sarcolemma Plasma membrane of muscle
Sarcoplasm Cytoplasm with cell structures
Sarcoplasmic Reticulum Sleeve of netting surrounding myofibrils (Holds Calcium)
Satellite Cells Located between Sarcolemma and Endomysium
Terminal Cisternae Thick ends of SR
Transverse tubule (T Tubule) Infolding of sarcolemma
Triad 2 terminal cisternae, 1 T tubule
Tropomyosin Stringlike protein covering, myosin binding site
Troponin Globular protein attached to tropomyosin, Binding site for Ca++
Elastic filaments attach to what? Ends of thick filaments, anchor to Z discs
What are the 2 types of Contractile proteins? Actin and Myosin
What are the 2 types of Regulatory proteins? Tropomyosin and Troponin
What is the name of the Accessory protein? Dystrophin
Where is Dystrophin located? Between thin filaments and sarcolemma
When muscles contract, the ____________ shortens Sarcomere
Do myofilaments change length? No
What is it called if a nerve is severed and the muscle becomes paralyzed? Degeneration Atrophy
What are nerve cells that serve skeletal muscle fibers called? Motor Neurons
What is it called when the neuron fires and all the muscle fibers by it will contract? Motor Unit
Created by: 339730466385696
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