G3 Back Muscles Flashcards

1
Q

What muscles come from epaxial mesoderm and what rami innervates them? And what about Hpaxial mesoderm?

A

Epaxial: intrinsic back muscles, posterior rami

Hypaxial: Limb and trunck muscles, anterior rami

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2
Q

What are the three divisions of the semispinalis group?

A

Thoracis, cervicis, and capitis
The cervicis are deep to the capitis and only go up to C2
Capitis is deep to splenius

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3
Q

What kind of rotation is produced by unilateral contraction of transversospinal group muscles?

A

Contralateral rotation

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4
Q

What are levator costarum muscles?

A

Respiratory muscles. They go from transverse processes inferiorly to ribs. Longus skips a rib.

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5
Q

What are the segmented muscles between the spinous processes and the transverse processes?

A

Intertransversarii

Interspinalis

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6
Q

What are the functions of the suboccipital and greater occipital nerves?

A

Suboccipital only does motor function

Greater occipital only does sensory

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