Structure of the muscles
What are muscles
fibrous tissues that contact when stimulated by messages from the nervous system to produce movements.
what is the origin of the muscles
the non moving (fixed) portion of the muscle attached to bones or other fixed muscles
frontalis
raises the eyebrows or draws the scalp forward
what is the corrugator muscle
controls the eyebrows drawing them in and downward.
what is the function of the orbicularis oris
contracts, puckers and wrinkles the lips- as in kissing or whistling
what are cardiac muscles
found only in the heart
only muscle of its type in the human body
responsible for contraction of the heart
what is the belly of the of the muscle
the midsection of the muscle
occipitalis
draws the scalp back
what is the levator palpebrae superioris
it is above the eyelid and raises the eyelid
what is the function of the zygomaticus
draws the mouth up and back- as in laughing
what are voluntary or strained muscles?
create movements based on intentional desire
example: raising your hand to catch a ball
what is the insertion of the muscle
the portion of the muscle joined to movable attachments such as bones, movable muscles or skin
auricularis anterior
in front of the ear
what is the orbicuaris oculi
it circles the eye socket and closes the eyelid
what is the function of buccinator
compresses the cheek to release air outwardly- as in blowing
what are involuntary or non striated muscles?
respond automatically to controls various body functions including the functions of internal organs.
the muscular system makes up approximately how much of the body weight
40%- 50%
auricularis superior
above the ear
what is the procerus muscle
draws brows down, wrinkles the area in between brows and upper part of nose
what is the function of the quadratus libii superioris
raises both the nostrils and the upperlip, as in expressing distaste
what is the definition of myology
the study of structure, functions and diseases of the muscles
we always go ___ to ____ when massages
insertion to origin
auricularis posterior
behind the ear
what is the nosalis muscle
opens nostrils, wrinkles bridge of nose
what is the function of the quadratus labii inferioris
pulls the lower lip down or to the side- as in expressing sarcasm