1Stimulate muscle fibers to contract neurons axons branch so that each muscle fiber is innervated
Motor neurons
2muscle 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
3Dense regular c.t. surrounding entire muscle. Seperate muscle from surrounding tissue and organs. Connected to deep fascia
Epimysium
4Collagen and elastic fibers surrounding a group of muscle fibers called fascicle.
Perimysium
5Loose connective tissue that surrounds individual muscle fibers
endomysium
6consists of hundreds to thousands of muscle cells, plus connective tissue wrappings, blood vessels and nerve fibers.
Muscle
7a discrete bundle of muscle cells, segregated from the rest of the muscle by a connective tissue sheath
fascicle
8an elongated multinucleate cell
muscle fiber
9the movable bone when a muscle contracts
Insertion
10Immovable or less movable bone where the movable bone moves towards
origin
11surrounds the sarcoplasm
Sarcolemma
12cylindrical structures within muscle fiber
myofibrils
132 types of myofilaments
actin filaments(thin) myosin filaments(thick)
14a dark band, full length of thick myosin filament
A bands
15protein to which myosins attach
M line
16Thick but NO thin filaments
H zone
17a light band; from Z disks to ends of thick filaments
I bands
18filamentous network of protein
Z disk
19elastic chains of amino acids
titin filaments