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Muscle Review
Mrs. Pandya
35
Anatomy
12th Grade
11/15/2010

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Term
What are the types of muscles?
Definition
Cardiac, Smooth, Voluntary
Term
What is the job of every muscle?
Definition
Movement, stabilization,regulate organ volume, produce heat, moving subsatnces in the body
Term
skeletal muscle
Definition
moves parts of the skeleton
Term
cardiac muscle
Definition
found in heart, pumps blood
Term
smooth muscle
Definition
involuntary, nonstriated
Term
how are muscles structured
Definition
fibers are together in a fascicle and multiple fascicles are together to make a muscle which are attached to the bone by tendons.
Term
how is an aponuerosis different from a tendon
Definition
aponuerosis is sheet like and found in the head.
Term
what is a microfibril?
Definition
thread-like through a muscle fiber with myosin and actin
Term
Mycrofibrils are made up of
Definition
thick filaments(myosin) and thin filaments(actin)
Term
what are the parts of the sacromere
Definition
A band, H zone, I band
Term
how does a sacromere cause the muscle to move
Definition
in the abscence of ATP and with calcium the myosin pulls the actin into the dark zone and contracts the muscle
Term
what is the specialized form of smooth ER used in myofibrils that releases Ca called
Definition
acetylcholine
Term
what is the nuerotransmitter used to talk to muscles
Definition
motornueron
Term
what is an action potential
Definition
electric signal that propogates along the membrane of a muscle fiber
Term
why is ATP important to muscle contraction
Definition
enrgizes myson to bridge over to actin
Term
what causes rigor mortis
Definition
lack of ATP myosin remains attached to actin
Term
what is rigor mortis
Definition
muscles remain part contracted after death
Term
what causes the muscle to relax
Definition
the level of calcium falls and myosin binds to ATP and releases actin
Term
Lee The Baker Took The Muffins
Definition
Ligaments To Bone Tendons To Muscles
Term
who is the prime mover(flexed bicep)
Definition
biceps
Term
what is the synergist(lift arm)
Definition
deltoid
Term
antagonist(flexed bicep)
Definition
tricep
Term
fatigue on skeletal muscles
Definition
inability to use muscles due to lowered Ca release, depletion of creatine phosphate, depletion of oxygen
Term
adduction
Definition
movement toward midline of body
Term
abduction
Definition
movement away from body mid line
Term
flexion
Definition
decrease in angle between two bones
Term
extension
Definition
increase in an angle between two bones
Term
circumduction
Definition
movement in a circle
Term
rotation
Definition
moving a bone around its axis
Term
supination
Definition
palm up
Term
pronation
Definition
palm down
Term
inversion
Definition
movent of the sole medially at the ankle
Term
eversion
Definition
movement of the sole laterally at the ankle
Term
plantar flexion
Definition
bending the foot in the direction of the sole
Term
dorsiflexion
Definition
bending the foot up
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