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18 terms

Skeletal system

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a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)
Smooth muscle
Partial state of contraction. ie - constantly pushing on stomach contents or blood
Smooth muscle tone
specialized cell junctions between heart muscle cells that facilitate the passing of an impulse from one heart cell to the next
Intercalated disc
The enlarge fleshy body of the body of the slender points of attachment
Belly
a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc
Fascia
OUTER COVERING OF A MUSCLE
Epimysium
outer covering of small bundles of muscle fiberst
Perimysium
connects muscle to bone
Tendon
involves the compression of nerves and blood vessels due to swelling within the enclosed space created by the fascia that separates groups of muscles
Compartment syndrome
any of the deeper and thicker fascia that attach muscles to bones
Aponeurosis
cell membrane of a muscle cell
Sarcolemma
channels perpendicular to myofibrils that extend through fiber
Transverse tubules
specialized endoplasmic reticulum of muscle cells
Sarcoplasmic reticulum
Micorsopic, fiber-like structures that occupy most cytoplasm in skeletal muscle cells
Myofibrils
protein filaments inside a myofibril are organized into repeating functional units
Sarcomeres
conposed primarily or actin; each actin has an active site that can interact with myosin; active sites are covered by tropomyosin strands, which are held in place by troponin.
Thin filaments
staggered arrays of myosin molecules
Thick filaments
...
Myosin