types of muscles (subset)

Epimysium

(outside muscle) an overcoat of dense irregular connective tissue that surrounds the whole muscle

Excitabilty

(responsiveness, irritability); the ability of muscle tissue to recieve and respond to a stimulus, that is any change in the environment either inside or outside the body

Endomysium

(within muscle) a whispy sheath of connective tissue that surrounds each individual muscle fiber

Muscle Functions

Produce Movement, Maintain Posture and Body Position, Stabalize Joints, Generate Heat

Elasticity

ability of muscle cell to recoil and resume its resting length after being stretched

Contractility

ability of muscle tissue to shorten forcibly when adequetly stimulated

Skeletal Muscle

each is a discrete organ, made up of serveral kinds of tissues; skeletal muscle fibers predominate, but blood vessels, nerve fibers, and substantial amounts of connective tissue are also present

Perimysium

fibrous connective tissue; surrounds each fasicle (grouped muscle fibers that resemble bundles of sticks)

Sarco

flesh

Smooth Muscle Tissue

found in the walls of hollow visceral organs, such as the stomach, urinary bladder, and respiratory passages; forces fluids and other substances through internal body channels; elongated "fibers"; not striated; not voluntary

Connective Tissue Sheaths

hold together and wrap around individual muscle fibers; support each cell and reinforce the muscle as a whole

Origin

less movable bone; typically lies proximal to the insertion

Insertion

movable bone, moves towards the immovable or less movable bone

Cardiac Muscle Tissue

occurs only in the heart, where it constitutes the bulk of the heart walls; striated; not voluntary

Skeletal Muscle Tissue

packaged into skeletal muscles, organs that attach to and cover the bony skeleton; longest muscle cells; have strips called striations; a voluntary muscle; responsible for overall body mobility

Myo or Mys

root words meaning "muscle"

Muscle Fibers

skeletal and smooth muscles; are elongated; diameter ranges from 10 to 100 um (10 times that of an avergage body cell); multiple nuclei

Types of Muscle Tissue

skeletal, cardiac, smooth; each served by one nerve, an artery, and one or more veins

Extensibilty

the ability of muscle tissue to be stretched or extended