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A&P I connect tissue

Stack #20487

skeletal muscle tissue striated, voluntary (ex. found in biceps)
cardiac muscle tissue striated, involuntary , only found in heart
smooth muscle tissue nonstriated (smooth) involuntary (ex. found in digestive system, arteries, intestine)
functions of skeletal muscle produce body movement, stabilize body position, storing and moving substances within the body (ATP), generating heat (thermogenesis=shiverring)
properties of muscle tissue electrical excitability, contractilily, extensibility, elasticity
superficial fascia aka subcutaneous layer, separates muscle from skin
deep fascia holds muscles with similar functions together
3 layers of connective tissue epimysium, perimysium, endomysium
epimysium surrounds whole muscle
perimysium surrounds muscle bundles
endomysium surrounds individual muscle fibers
tendon all 3 layers of connective tissue connect at each end of a muscle and form this
NMJ neuromuscular junction; where muscle fiber and nerve (neuron) connect and communicate
sarcolema plasma (cell) membrane of muscle fiber
Transverse tubules (T tubules) extend from sarcolemma into sarcoplasm
sarcoplasm the cytoplasm of skeletal muscle fiber
myofibrils cylindrical structures within each muscle fiber, contains bundles of thick and thin myofilaments
sarcoplasmic reticulum "sleeve covering myofibril"; network of membranous channels surrounding each myofibril
terminal cisternae surrounds T tubule- expanded ends of SR on either side of T tubule; 2 to a tubule
filaments short protein structures arranged into sarcomeres consisting of thin actin and thick myosin filaments
Created by: ShellyA&P