mus. (trunk, head & neck) Flashcards Preview

deanne's - MSA (muscluoskeletal anatomy) > mus. (trunk, head & neck) > Flashcards

Flashcards in mus. (trunk, head & neck) Deck (12):
1

rectus abdominus

o/ 2

i/ 2

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O/ 

  • Pubic syphysis
  • Public crest

I/

  • Cartilage of 5,6 & 7th rib
  • Xyphoid process
 

2

rectus abdominus

a/ 2

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a/

  • To flex the trunk
  • Tilt the pelvis posteriorly
 

3

a/ 1

Erector spinae /3

  • Spinalis (most medial)
  • Longissimus
  • Iliocostalis (most lateral) ~ side bending

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  • Erecting/extending the spine
 

4

o/*4

i/ 3

Erector spinae /3

  • Spinalis (most medial)
  • Longissimus
  • Iliocostalis (most lateral) ~ side bending

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o/

Common tendon (thoracolumbar fascia)

  • Attaches to posterior surface of sacrum
  • Iliac crest
  • Spinous processes of the lumbar
  • Last 2 thoracic vertebrae
i/
  • Posterior ribs
  • Spinous/transverse processes of thoracic & cervical vertebrae
  • Mastoid process of temporal bone
 

5

masseter

o/ 1

i/ 2

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o/

  • Zygomatic arch
i/
  • Angle &
  • ramus of mandible
 

6

masseter

a/2

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a/ 

  • Elevation of mandible (closing jaw)
  • Protraction of mandible
 
 

7

temporalis

o/ 2

i/ 2

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o/

  • Temporal Fossa
  • Temporal facia
i/
  • Coronoid process of the mandible &
  • anterior edge of ramus of the mandible
 

8

temporalis

a/2

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a/

  • mandible elevation (closing the jaw) 
  • Retracts the mandible

9

sternocleidomastoid SCM

o/2

i/ 2

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o/

  • Sternal head: top of manubrium
  • Clavical head: medial of 1/3 clavical

i/

  • Mastoid process of temporal bone &
  • superior nuchal line of occiput (lateral portion)

10

sternocleidomastoid SCM

a/

bilaterally 2

unilaterally 2

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a/

Bilaterally

  • Muscle will flex neck &
  • raise rib cage

Unilaterally

  • flex head & neck (same side and rotate)
  • Rotate head & neck (opposite side)
 

11

Scalenes

o/2

i/2

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o/

Anterior scalene & Middle scalene

  • Transverse process of C1-C3

Posterior scalene

  • Transverse process of C6-C7
i/

Anterior scalene & Middle scalene

  • First rib

Posterior scalene

  • Second rib

12

scalenes

a/

bi-2

uni-2

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Bilaterally

  • Elevate the ribs (during inhalation)
  • Flex head & neck

Unilaterally

  • Lateral flex the head & neck to same side
  • Rotate head & neck to opposite side