lecture15_Muscle1

lecture15_Muscle1 - Muscle Physiology 1 Reading: chapter 8,...

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Muscle Physiology 1 Reading : chapter 8, section: skeletal muscle, pgs 257-264
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Overview – Muscle Physiology Interesting Facts: - Muscle accounts for ~ ½ of the body’s weight - Skeletal muscle alone makes up ~ 40% of body weight in men, and ~ 32% of body weight in women - Cardiac muscle and smooth muscle make up another 10% of the total body weight - Individual skeletal muscle cells are narrow (~10-100 µ m), but can be very long (up to 2.5 feet)
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3 types of muscle : 1) skeletal muscle 2) cardiac muscle 3) smooth muscle Overview – Muscle Physiology Controlled contraction of muscle allows : 1) Purposeful movement of the whole body or parts of the body 2) Manipulation of external objects 3) Propulsion of contents through various hollow internal organs 4) Emptying contents of certain organs to the external environment 1) skeletal muscle - striated - voluntary 2) cardiac muscle - striated - involuntary 3) smooth muscle - unstriated - involuntary
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Neuromuscular Junction (NMJ) - Sequence of Events (1-7): 1) Action potential propagates into the terminal bouton” 2) Depolarization of the terminal “bouton” opens voltage-gated Ca
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This note was uploaded on 01/29/2012 for the course NPB 101 taught by Professor Fuller,charles/goldberg,jack during the Winter '08 term at UC Davis.

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lecture15_Muscle1 - Muscle Physiology 1 Reading: chapter 8,...

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