Muscle Anatomy and Physiology The Neuromuscular Junction / Motor Unit Anatomy: Max=>Min Muscle, fasciculus, fiber, fibrils, filaments Epimysium, perimysium, endomysium “Bundles within bundles” Contractile units: SARCOMERES Thin: actin, troponin, tropomysim Thick : myosin
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Muscle Anatomy and Physiology
The Neuromuscular Junction / Motor Unit
Action Potential (AP) Depolarization travels along membrane
AP travels along sarcolemma=> T-tubules => sarcoplasmic reticulum => Terminal Cisternae => Calcium released
The Physiology of Muscle
Contraction and ATP
Draw and Label The Neuromuscular Junction:
*What is the chemical
Fast, Force, Fatigue
“Red”: Myoglobin, mitochondria,
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