mus. (trunk, head & neck) Flashcards
1
Q
rectus abdominus
o/ 2
i/ 2
A
O/
- Pubic syphysis
- Public crest
I/
- Cartilage of 5,6 & 7th rib
- Xyphoid process
2
Q
rectus abdominus
a/ 2
A
a/
- To flex the trunk
- Tilt the pelvis posteriorly
3
Q
a/ 1
Erector spinae /3
- Spinalis (most medial)
- Longissimus
- Iliocostalis (most lateral) ~ side bending
A
- Erecting/extending the spine
4
Q
o/*4
i/ 3
Erector spinae /3
- Spinalis (most medial)
- Longissimus
- Iliocostalis (most lateral) ~ side bending
A
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
Q
masseter
o/ 1
i/ 2
A
o/
- Zygomatic arch
i/
- Angle &
- ramus of mandible
6
Q
masseter
a/2
A
a/
- Elevation of mandible (closing jaw)
- Protraction of mandible
7
Q
temporalis
o/ 2
i/ 2
A
o/
- Temporal Fossa
- Temporal facia
i/
- Coronoid process of the mandible &
- anterior edge of ramus of the mandible
8
Q
temporalis
a/2
A
a/
- mandible elevation (closing the jaw)
- Retracts the mandible
9
Q
sternocleidomastoid SCM
o/2
i/ 2
A
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
Q
sternocleidomastoid SCM
a/
bilaterally 2
unilaterally 2
A
a/
Bilaterally
- Muscle will flex neck &
- raise rib cage
Unilaterally
- flex head & neck (same side and rotate)
- Rotate head & neck (opposite side)
11
Q
Scalenes
o/2
i/2
A
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
Q
scalenes
a/
bi-2
uni-2
A
Bilaterally
- Elevate the ribs (during inhalation)
- Flex head & neck
Unilaterally
- Lateral flex the head & neck to same side
- Rotate head & neck to opposite side
