Unit 1 - Back: Spinal Nerves in the Neck from Anterior (Ventral) Ramus (Ex. I)

Question 1

C2-C3

Answer 1

great auricular N
transverse cervical N
sensory C plexus –> A and L back (sensory)
ansa cervicalis (motor C plexus) –> infrahyoid muscles (except thyrohyoid)

Question 2

C3-C4

Answer 2

supraclavicular N
sensory C plexus –> A and L neck (sensory)
ansa cervicalis (motor C plexus) –> infrahyoid (except thyrohyoid)
contribute to phrenic N (motor) –> diaphragm and pericardium

Question 3

C2

Answer 3

lesser occipital N
sensory part of C plexus - A and L neck (sensory)
ansa cervicalis (motor C plexus) –> infrahyoid muscles (except thyrohyoid)