Unit 1 - Back: Transversospinalis Muscles (Ex. I) Flashcards Preview

Gross Anatomy '15 Ex. I > Unit 1 - Back: Transversospinalis Muscles (Ex. I) > Flashcards

Flashcards in Unit 1 - Back: Transversospinalis Muscles (Ex. I) Deck (6)
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1
Q

rotatores breves

A

O/I: T1-T12 between transverse and spinous processes of adjacent vertebrae
Inn: spinal nerves from P rami
A: together extends T spine; rotates contralaterally; PROPRIOCEPTION

2
Q

rotatores longi

A

O/I: T1-T12 between transverse and spinous processes, skipping 1 vertebra
Inn: spinal nerves from P rami
A: together extends T spine; rotates contralaterally; PROPRIOCEPTION

3
Q

multifidus

A

O/I: C2-sacrum between transverse and spinous processes, on mammillary processes of L vertebrae, skipping 2-4 vertebrae
Inn: spinal nerves from P rami
A: together extends spine; ipsilaterally flexes spine and contralaterally rotates

4
Q

semispinalis capitis

A

O: transverse and articular processes of C4-T7
I: O bone between S and I nuchal lines
Inn: spinal nerves from P rami
A: together extends T and C spines and head (stabilizes craniovertebral joints); ipsilaterally flexes head, C, and T spines and contralaterally rotates

5
Q

semispinalis cervicis

A

O: transverse processes of T1-T6
I: spinous processes of C2-C5
same O and I as longissimus cervicis except LC I is transverse processes of C2-C5
Inn: spinal nerves from P rami
A: together extends T and C spine and head (stabilizes craniovertebral joints); ipsilaterally flexes head, C, and T spines and contralaterally rotates

6
Q

semispinalis thoracis

A

O: transverse processes of T6-T12
I: spinous processes of C6-T4
Inn: spinal nerves from P rami
A: together extends T and C spines and head (stabilizes craniovertebral joints); ipsilaterally flexes head, C, and T spines and contralaterally rotates