G3 Back Muscles Flashcards
What muscles come from epaxial mesoderm and what rami innervates them? And what about Hpaxial mesoderm?
Epaxial: intrinsic back muscles, posterior rami
Hypaxial: Limb and trunck muscles, anterior rami
What are the three divisions of the semispinalis group?
Thoracis, cervicis, and capitis
The cervicis are deep to the capitis and only go up to C2
Capitis is deep to splenius
What kind of rotation is produced by unilateral contraction of transversospinal group muscles?
Contralateral rotation
What are levator costarum muscles?
Respiratory muscles. They go from transverse processes inferiorly to ribs. Longus skips a rib.
What are the segmented muscles between the spinous processes and the transverse processes?
Intertransversarii
Interspinalis
What are the functions of the suboccipital and greater occipital nerves?
Suboccipital only does motor function
Greater occipital only does sensory