Gross anatomy of skeletal muscle

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1
Stimulate muscle fibers to contract neurons axons branch so that each muscle fiber is innervated
Motor neurons
2
muscle require large amounts of energy extensive vascular network delivers necessary oxygen and nutrients and carries away metabolic waste produced by muscle fibers
Capillary beds surround muscle fibers
3
Dense regular c.t. surrounding entire muscle. Seperate muscle from surrounding tissue and organs. Connected to deep fascia
Epimysium
4
Collagen and elastic fibers surrounding a group of muscle fibers called fascicle.
Perimysium
5
Loose connective tissue that surrounds individual muscle fibers
endomysium
6
consists of hundreds to thousands of muscle cells, plus connective tissue wrappings, blood vessels and nerve fibers.
Muscle
7
a discrete bundle of muscle cells, segregated from the rest of the muscle by a connective tissue sheath
fascicle
8
an elongated multinucleate cell
muscle fiber
9
the movable bone when a muscle contracts
Insertion
10
Immovable or less movable bone where the movable bone moves towards
origin
11
surrounds the sarcoplasm
Sarcolemma
12
cylindrical structures within muscle fiber
myofibrils
13
2 types of myofilaments
actin filaments(thin) myosin filaments(thick)
14
a dark band, full length of thick myosin filament
A bands
15
protein to which myosins attach
M line
16
Thick but NO thin filaments
H zone
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a light band; from Z disks to ends of thick filaments
I bands
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filamentous network of protein
Z disk
19
elastic chains of amino acids
titin filaments
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