#2 & 3. Plexuses Flashcards
what does the Lesser occipital innervate?
skin of scalp posterior and superior to ear
Where does the lesser occipital originate from?
C2
What does the great auricular innervate?
skin anterior, inferior and over ear and over parotid glands
Where does the great auricular originate from?
C2-C3
What does the transverse cervical innervate?
skin over anterior aspect of neck
Where does the transverse cervical originate from?
C2-C3
What does the supraclavicular innervate?
skin over superior portion of chest and shoulder
Where does the supraclavicular originate form?
C3-C4
What are the superficial (sensory) branches of the cervical plexus?
lesser occipital
great auricular
transverse cervical
supraclavicular
What are the deep (mostly motor) branches of the cervical plexus?
Ansa cervicalix superior and inferior root
phrenic
segmental branches
What does the ansa cervicalis superior root innervate?
infrahyoid and geniohyoid muscles of the neck
Where does the ansa cervicalis superior root originate from?
C1
What does the ansa cervicalis inferior root innervate?
infrahyoid muscles of the neck
Where does the ansa cervicalis inferior root originate form?
C2-C3
What does the phrenic nerve innervate?
the diaphragm
Where does the phrenic nerve originate?
C3-C5
What do the segmental branches innervate?
the prevertebral (deep) muscles of the neck, the lev scap and middle scalene
Where do the segmental branches originate?
C1-C5.
What does the dorsal scapular innervate?
lev scap, rhomboid major & rhomboid minor muscle
Where does dorsal scapular originate from?
C5
What does the long thoracic innernate?
serratus anterior muscle
Where does the long thoracic originate?
C5-C7
Where does the nerve to subclavius originate?
C5-C6
What does suprascapular innervate?
supraspinatus and infraspinatus muscle