Anatomy and Cell Biology 3309 Lecture Notes - Lecture 15: Loose Connective Tissue, Muscle Fascicle, Skeletal Muscle
5 Apr 2018
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Identifying feature of skeletal muscle: striated under lm. Skeletal muscle is the only voluntary muscle, whereas cardiac and smooth are involuntary, it is done automatically. Longitudinal section left: see long bands of muscle, the entire muscle cell might not fit in the slide. Cross section - right: skeletal muscle is little bundles (similar to peripheral nerve) Muscle cells are very long and tubular in skeletal muscle: may not be able to see an entire muscle cell in a slide because they are so long, specifically in a longitudinal section. Endomysium: wrap around single muscle fiber, loose connective tissue (looser compared to perimysium, very fine, wispy not as well developed as the perimysium. Muscle belly is made up of fascicles: there are multiple muscle fascicles in a muscle belly, similar to nerve: multiple axons make up a fascicle, many fascicles make up the peripheral nerve. Fascicles are made up of muscle fibers: similar to nerve: axons make up fascicle.
