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A&P Exam 3
Skeletal Muscles
| Term | Definition |
|---|---|
| the epimysium is made up of | dense irregular tissue wrapping whole muscle |
| the perimysium is made up of | dense irregular tissue wrapping fascicles |
| the endomysium is made up of | areolar tissue wrapping individual fibers |
| deep fascia | -dense irregular connective tissue superficial to epimysium -separates individual muscles -binds muscles with similar functions |
| superficial fascia | -areolar and adipose tissue connective tissue superficial to deep fascia -separates muscles from skin |
| gross anatomy of skeletal muscle | -vascularized -innervated by somatic motor neurons -voluntary muscle |
| two types of myofilaments are | thin and thick filaments |
| thick filaments consist of | bundles of many myosin protein molecules |
| thin filaments consist of | -twisted strands of actin (each F-actin composed of G-actin monomers) -G-actin has myosin binding site -tropomyosin and troponin are present |
| what is tetanus | -spastic paralysis caused by toxin -blocks release of inhibitory neuroT, causes overstimulation of muscles |
| what is botulism | -muscular paralysis caused by toxin -prevents release of ACh at synapse |