2 - Cervical Plexus (complete) Flashcards
What makes up the cervical plexus
ventral rami of spinal nerves C1-C5
What does the cervical plexus innervate
neck
Thoracic cavity
Diphragmatic muscles
What are the major branches that come off of the cervical plexus
Lesser occipital great auricular Transverse cervical supraclavicular phrenic ansa cervicalis
What nerve in the cranial plexus contributes to the lesser occipital nerve
C2
What is the function of the lesser occipital nerve
sensory to the skin of the neck and scalp posterior to the ear
What nerves in the cranial plexus contribute to the great auricular nerve
C2 and C3
what is the function of the great auricular nerve
sensory to the skin of the parotid region, ear, and mastoid area
What nerves in the cranial plexus contribute to the transverse cervical nerve
C2 and C3
What is the function of the transverse cervical nerve
sensory to the lateral and anterior parts of the neck
What nerves of the cervical plexus contribute to the supraclavicular nerve
C3 and C4
What is the function of the supraclavicular nerve
sensory to the skin over the clavicle and the shoulder
Which nerves of the cervical plexus contribute to the phrenic nerve
C3, C4, and C5
What is the function of the phrenic nerve
sensory and motor to diaphragm
Which nerves of the cervical plexus contribute to the ansa cervicalis
C1, C2, and C3
What is the function of ansa cervicalis
motor to the three infrahyoid muscles
omohyoid
sternohyoid
sternothyroid
what nerve does ansa cervicalis travel with
CN XII
What are the two roots of ansa cervicalis and which Cervical nerve travels in each
superior root (C1) inferior root (C2 and C3)
Which muscles are innervated by the superior root of ansa cervicalis
superior belly of omohyoid
sternothyroid
sternohyoid
Which muscles are innervated by the inferior root of ansa cervicalis
inferior belly of omohyoid
sternothyroid
sternohyoid
