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musclar system
chapter 10
43
Anatomy
Graduate
06/23/2011

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Term
myology
Definition
study of musle
Term
fibers
Definition
skeletal muscle cells
Term
fascicles
Definition
mucsle fibers are grouped into bundles
Term
epimysium
Definition
each whole muscle is covered by a layer of connective tissue
Term
origin
Definition
-muscle attachment at stationary
Term
insertion
Definition
moveable end
Term
belly
Definition
thicker middle region
Term
fusiform muscles
Definition
thick in middle and taper at end
Term
parrallel muscles
Definition
long, strap-like muscles of uniform width and length
Term
convergent muscles
Definition
fan-shaped
Term
pennate muscle
Definition
feather shaped
Term
circular muscles ( spincters)
Definition
surround body openings
Term
instrinsic muscle
Definition
origin and insertion within particular region
Term
entrinsic muscle
Definition
origin in one region and insertion in another region
Term
sketal muscle to contract
Definition
  stimulated by nerves
Term
innervation
Definition
nerve supply to an organ
Term
actions
Definition
movement of a muscle
Term
agonist or prime mover
Definition
muscle producing the most force
Term
antagonist
Definition
muscle that opposes the prime mover
Term
synergist
Definition
muscle that works with prime mover
Term
antagonistic
Definition
pair of muscle act on opposite sides of a joint
Term
fixator
Definition
muscle that prevents the movement of a bone
Term
epicranius
Definition
move scalp, forehead skin and eyebrows
Term
orbicularis oculi
Definition
closes eyelid
Term
levator palpebrae superioris
Definition
opens eyelid
Term
orbicularis oris
Definition
forms shape od lip during speech
Term
buccinator
Definition
helps in suckling and chewing
Term
platysma
Definition
depresses mandible and widen mouth
Term
muscles of chewing and swallowing
Definition
about 22 muscles involved in chewing and swalloing
Term
flexor
Definition
sternocleidomastoid
Term
extensor
Definition
trapezius
Term
muscle of respiration
Definition

-diaphragm

-11 pairs of external intercostals muscles

-11 pairs of internal intercostals muscles

Term
abdominal muslces
Definition

-rectus abdominis,

 -external& internal obliques ,

-transverse abdominis

Term
prime movers of shoulder joint
Definition

-pectoralis major

- latissimus dorsi

Term
deltoid
Definition
prime mover that flexes ,extends and abducts shoulder
Term
prime flexors
Definition
biceps brachii & brachialis
Term
prime extensor
Definition
triceps brachii
Term
quadriceps femoris
Definition
mosy powerful muscle of body
Term
sartorius
Definition
longest muscle of body
Term
"hamstrings"
Definition
biceps femoris,semimembranous & semitendinosus
Term
muscles acting on foot
Definition
gastrocnemius, soleus
Term
intrinsic muscles of foot
Definition
supports arches and aid in locomotion
Term
muscle injuries treated initially with
Definition

-rest

-ice

-compression and elevation

"rice"

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