support the abdominal wall
flexes forearm at elbow
flexes leg at the knee
a thick,triagular muscle covering the shoulder joint, raise arm from the side
the largest, most prominent muscle of the calf of the leg, point toe
extends hip for standing up
adducts humerus-run from vertebrae to humerus
muscle in cheek that closes the lower jaw when chewing
adducts humerus-moves shoulder, deep breathing
extends and rotates femur; straightens the leg
flexes hip and knee; bends leg-longest muscle in human body
flexes foot for walking
elevate scapula; lifts shoulder
extends forearm at elbow; straightens the arm
What is the muscular system responsible for?
how many muscles are there in the human body
where do muscles get there energy from?
attached to bones by tough connective tissue
muscles you control
muscles you can't control constantly
what muscle cells are called
name 3 types of muscles
skeletal,cardiac, and smooth
arms and legs
where are skeletal muscles located?
stomach and blood vessels
where are smooth muscles located?
where are cardiac muscles located?
Are skeletal muscles vol. or invol.?
Are skeletal muscles striated or not?
what kind of bands do the types of muscles have?
skeletal-striped-like bands, smooth-no bands, cardiac-band-like apperance
T or F? muscles always pull but never push.
What does a muscle do when it shortens?
when a muscle returns to it regular shape
T or F?muscles always work in pairs.
all or none rule
the fiber either contracts as hard as it can or it dosen't contract
the strength of the contraction is determined by what?
the number of muscle fibers that contract
the repeated contraction of cardiac muscle
when do muscle contract or become shorter and thicker?
when you stretch
eliminates waste,covers & protects the body from injury,regulates body temp.,gathers info from the env.,produces vitamin D
what are 5 functions of the skin?
why are pain messages important?
because they warn you if your injured
skin cells produce this in the presence of sunlight
enables movement of the body & internal organs
what structures do the dermis contain?
hair follice & sweat glands
how can you keep you skin healthy
healthful diet,keep it clean and dry,limit exposure to the sun
the outer most layer of the skin
inner most layer of the skin
pigment that gives skin its color,protects skin from burning in the sunlight
what are 3 structures in the dermis?
hairs, sweat glands, and oil glands
perspiration reaches the surface of the skin through these openings
how does the skeletal muscle help my body move?
pulls and contracts