Unit 4 - Head and Neck; Branches of Spinal Nerves in Neck (A/Ventral Region) (Ex. III)

Question 1

C2

Answer 1

sensory: lesser occipital n. –> sensory part of C plexus –> A and L neck
motor: ansa cervicalis –> infrahyoid muscles except thyrohyoid

Question 2

C2-C3

Answer 2

sensory: great auricular n.; transverse cervical n. –> sensory part of C plexus –> A and L neck
motor: ansa cervicalis –> infrahyoid muscles except thyrohyoid

Question 3

C3-C4

Answer 3

sensory: supraclavicular n. –> sensory part of C plexus –> A and L neck
motor: contribute to phrenic n. (C3-C5) –> diaphragm and pericardium

Question 4

C1

Answer 4

NO SENSORY BRANCHES

motor: ansa cervicalis –> infrahyoid muscles (except thyrohyoid)