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GC Chapter 10/11

Skeletal muscle system

Membrane that connects to the deep fascia and covers the muscle epimysium
Membrane that covers fasicles of muscle fibers perimysium
membrane that covers individual muscle fibers endomysium
How does muscle connect to bone epi/peri/endo all come together to form tendons or aponeuresis
stem cells in the endomysium that help repair damaged cells myosatillite cells
mesodermal cells that fuse to create muscle fibers myoblasts
muscle cell membrane sarcolemma
extension of the sarcolemma that allows transmission of AP to contract entire fiber T-Tubes/Transverse Tubules
lengthwise subdivisions of muscle fiber, made of protein filaments (myofilaments) Myofibrils
responsible for muscle contraction myofilaments
type of myofilament made of actin thin filaments
type of myofilament made of myosin thick filaments
attaches to t-tubes to form chambers and transmit AP to myofibril Sarcoplasmic Reticulum
chambers formed by SR terminal cisternae
function of cisternae concentrate ca via ion pumps and release into sarcomeres to begin contraction
Created by: 100000860991270