Anatomy Muscle Tissues

muscle tissue accounts for how much body weight

50%

Excitability

ability to respond to stimulus

Contractibility

shortening

Extensibility

can be stretched or extended

Elasticity

return to original length

which muscle attahes to bones

skeletal

skeletal voluntary or involuntary?

voluntary

skeletal

multinucleated, no intercalated discs

smooth muscles

short and spindle shaped, found in organ walls, lack striations and intercalated discs

cardiac muscles

short and branched, involuntary, single cells oer nucleus, striations and intercalated discs

functions of skeletal muscles

posture, nutrient reserve, protects entrances and exits

anatomy of skeletal muscles

Epimysium

around entire muscle

Perimysium

around each fasicle

Endomysium

around muscle fiber

Aponuerosis

broad tendon like sheet

Arrangement of Muscle Fiber

other anatomical structure

sarcomere

area where motor nueron innervates the sarcolemma

neuromuscular junction