Chapter 6-Muscle
1
-Movement (body+organ)
-Skeletal, cardiac, smooth
2
Skeletal muscle
-Striated
-involuntary/voluntary movement
-limited regeneration
3.
Skeletal muscle tissue
Cardiac Muscle
-striated
-minimal regeneration
Smooth Muscle
-non-striated, smaller
-regenerates easy
-Blood vessels, airways, stomach
Fascicle
-bundle of muscle fibers
-ONLY muscle cells
- >1 nucleus
-plasma membrane invaginates to form T-tubule
-sarcoplasmic reticulum (endo. Reticulum) surrounds myofibrils and ends near T-tubule as
terminal cisternae
Muscle bundles are fibers surrounded by connective tissue
-each has an artery, 1-2 veins and a motor nerve cell
b. muscle fiber (cell) = sarcolemma surround myofibrils surrounded by sarcoplasmic reticulum.
Sarcolemma invaginates at transverse tubule. Fibers have mitochondria and nuclei.