Anatomy - Chapter 9

skeletal muscle made

• muscle tissue

• connective tissue

• blood vessels

• nerves

skeletal muscle tisuse

• striated

• voluntary somatic

• moves body

cardiac muscle tissue

• striated

• involuntary visceral

• pushes blood through cardiovascular system

smooth muscle tissue

• not striated

• involuntary visceral

• pushes fluids + solids along digestive tract

skeletal muscles functions

• body movement

• support soft tissues

• maintain body temp.

• maintain posture

• guard entrance + exits

• store nutrients

muscle connective tissue

• epimysium

• perimysium

• endomysium

epimysium

• sheath of collagen fibers

• separates muscle from tissue

• outer layer

perimysium

• fibrous layer dividing muscle into compartments

• blood vessels + nerve supply to fascicles

muscle fascicle

bundle of muscle fibers

muscle fibers

single muscle cell

endomysium

• surround muscle fibers

myosatellite cells

stem cells that repair damaged muscle tissue

skeletal muscle structure

connective tissue layers (epimysium, perimysium, endomysium) form tendons + aponeurosis

tendons

attach muscle to bone

aponeurosis

broad sheet with broad attachment to bones

skeletal muscle development

• each muscle cell brings its own nucleus + makes 1 big cell

myoblasts

• muscle building cells

• for multinucleate cells that make skeleton muscle fibers