neckmuscleabdomin

8/14/2019 Neckmuscleabdomin

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Muscles that Move theHead


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alance and movement of the head on the atlanto-occipital jointinvole action of several neck muscles. One example of these muscles is

muscles.


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Sternocleidomastoid


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Muscle: Sternocleidomastoid


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Muscle: Sternocleidomastoid

Origin: Sternum and Clavicle

nsertion: Temporal (Mastoidrocess!

"ction: Together# flexes the nec$%

alone# one side &ends head to'ardshoulder and turns face to oppositeside


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Muscles that Movethe "&dominal all


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muscles contri&ute to tha&dominal 'all.

Threeare flat#

the # theand the#

and oneis a straplikemuscle# the.


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). *our

+. external o&li,ue# internalo&li,ue# transverse a&dominis

-. rectus a&dominis


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The fi&ers in each of thesemuscles run in a cross direction

from one another in a 'a thatmaximi/es the strength of thethree muscles together (thin$ of

pl'ood!.


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The of three

muscles# external o&li,ue#nternal o&li,ue and transversusa&dominis meet at the midline toorm the . The

is a toughi&rous &and of tissue that

extends from the xiphoid proces

o the pu&ic smphsis.


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). "poneurosis

+. 0inea "l&a

-. 0inea "l&a


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1ectus a&dominis


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Muscle: 1ectus a&dominis

Origin: u&ic(crest and smphsis!

Insertion: Cartilage of ri&s(234! and xiphoid process

"ction: *lexes verte&ral columndepresses ri&s andcompresses a&domen


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1ectus "&dominis


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5xternal a&dominal o&li,ue


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Muscle: 5xternal a&dominalo&li,ue

Origin: 5xternal and inferior&orders of ri&s 23)+

Insertion: Iliac crest and lineaal&a

"ction: Compresses a&domen%depresses ri&s% flexes# laterallflexes or rotates verte&ral colum


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Internal a&dominal o&li,ue


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Muscle: Internal a&dominalo&li,ue

Origin: 0um&odorsal fasciaand iliac crest

nsertion: Inferior surfaces ofi&s 63)+# costal cartilages

73)8# linea al&a# and pu&is

"ction: Compresses a&domen%depresses ri&s% flexes#

aterall flexes or rotates verte&rcolumn


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Internal "&dominal O&li,ue


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Transversus a&dominis


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Muscle: Transverse "&dominis

Origin: Cartilages of inferior ri&sliac crest# and lum&odorsalascia

nsertion: 0inea al&a and pu&is

"ction: Compresses a&domen


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Transverse "&dominis


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Compresses a&domen% depresse&s% flexes# laterall flexes or

otates verte&ral column


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Internal a&dominal o&li,ue


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*lexes verte&ral column#depresses ri&s and compressesa&domen


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1ectus a&dominis


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Compresses a&domen


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Insertion: Cartilage of ri&s(234! and xiphoid process


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1ectus a&dominis


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Insertion: Iliac crest andlinea al&a


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Insertion: Inferior surfaces ofri&s 63)+# costal cartilages 73)8linea al&a# and pu&is


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Internal a&dominal o&li,u


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Insertion:0inea al&a and pu&i


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Origin: Pubic

(crest and symphysis)


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1ectus a&dominis


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Origin: 5xternal and inferior

&orders of ri&s 23)+


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Origin: Cartilages of inferior

ri&s# iliac crest# andlum&odorsal fascia


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0um&odorsal fascia and

iliac crest


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Internal a&dominal o&li,u

neckmuscleabdomin

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