Innervation of the Neck

Question 1

This nerve runs right next to the internal jugular vein, provides somatic motor to muscles of the pharynx, larynx, and superior esophagus, provides parasympathetic autonomic innervation to the trachea, and sensory from the pharynx, larynx, superior esophagus, carotid sinus, and carotid body

Answer 1

Vagus nerve

Question 2

Located at the bifurcation of the CCA, this has chemoreceptors to monitor O2, CO2, glucose, etc., in the blood

Answer 2

Carotid body

Question 3

This enlarged area in the internal carotid artery contains baroreceptors to monintor blood pressure

Answer 3

Carotid sinus

Question 4

This nerve is derived from the spinal cord and the medulla oblongata and travels deep to the SCM and superficial to the levator scapulae to innervate the trapezius and sternocleidomastoid muscles

Answer 4

Spinal accessory nerve

Question 5

This is a cranial nerve that goes into the floor of the mouth to innervate the tongue muscles

Answer 5

Hypoglossal

Question 6

The mylohyoid and the anterior belly of the digastric m. are innervated by branches of the

Answer 6

Trigeminal nerve

Question 7

The platysma, stylohyoid, and posterior belly of the digastric m. are innervated by branches of the

Answer 7

Facial nerve

Question 8

The lesser occipital nerve anterior rami provides cutaneous sensory from

Answer 8

skin of lateral neck and scalp posterior to the auricle

Question 9

The Greater auricular nerve anterior rami provide cutaneous sensory from

Answer 9

skin of the lateral neck inferior to the auricle and skin of the auricle

Question 10

The Transverse cervical nerve anterior rami provide cutaneous sensory from

Answer 10

the skin of the anterior neck

Question 11

The Supraclavicular nerves anterior rami provide cutaneous sensory from

Answer 11

skin of inferolateral neck

Question 12

The Greater occipital nerve posterior rami provides cutaneous sensory from the

Answer 12

skin of posterior scalp

Question 13

The cutaneous branches of posterior rami of C4-C8 spinal nerves provide cutaneous sensory from

Answer 13

the skin of the posterior neck

Question 14

This nerve loops near the bifurcation of the CCA to innervate the omohyoid, sternohyoid, and sternothyroid muscles

Answer 14

Ansa cervicalis

Question 15

This nerve is found anterior to the anterior scalene and receives somatic sensory from the diaphragmatic pleura, mediastinal pleura, and pericardium, as well as innervates the diaphragm

Answer 15

Phrenic nerve

Question 16

C_, _, _ keep the diaphragm alive

Answer 16

C3, 4, 5

Question 17

This is a very medial nerve group in the cervical region that provides to the longus capitis and longus colli muscles

Answer 17

Sympathetic trunk