Muscular System Notes BIO 240

Muscular + Digestive systems
Muscle components
A multiple areber




Tendon
elongated
T
-




I
-

Fusion of - multinucleated
Epimysium,
perimysium,
Endomysium


Muscle S Epimysium
-
Electrical insulation
-
Dense connective tissue layer covering surface




#ascicles
-t perimy sirm
S




f
-Dense connective tissue around
F I between fascicles
Filbert

Endomysirm
Delicate,
-

loose CT providing electrical insulation,
Lilliary support, binding of cells

, Somatic Nervous control
Motor Unit
- large/loooss: force
- - small (=5): fust= LMN + all muscle
precise tribers it controls

-
I bromatic Fibers dispersed
-




throughout muscle




is
-Individual muscle




f
tibers synapse



joy
-




=No
Graded
of
muscle


one
riber Sarcolemma
00.of
~




(plasma men)



I -sarcoplasin
R
me




arcooias
·
series myofibril
↓t-touies↓ Actin, myosin
-




N
Cisternal AP M
of St /
Triad