Neck

Question 1

What vertebral level is the thyroid cartilage located at

Answer 1

C4-5

Question 2

What vertebral level is the hyoid bone at

Answer 2

C3

Question 3

What vertebral level is the cricoid cartilage at

Answer 3

C6

Question 4

What vertebral level does the trachea begin at

Answer 4

Below C6

Question 5

What nerves innervate the skin of the neck

Answer 5

Primarily the C2,3,4 spinal nerves

Question 6

What is significant about the C2 spinal nerve dermatome

Answer 6

It covers the angle of the mandible, and is the only spinal nerve to innervate the face

Question 7

What nerve innervates the majority of the skin of the face

Answer 7

Cranial nerve V (trigeminal nerve)

Question 8

What is the origin of the platysma

Answer 8

Fascia and skin of deltoid and pectoral regions

Question 9

What is the insertion of the platysma

Answer 9

Mandible and tissues around the mouth

Question 10

What is the innervation of the platysma

Answer 10

Cranial nerve VII (facial nerve)

Question 11

What are the borders of the anterior triangle

Answer 11

SCM- posterior
Inferior border of the mandible- superior
Midline of the anterior neck- anterior

Question 12

What are the borders of the posterior triangle of the neck

Answer 12

Clavicle- inferior
SCM- anterior
Trapezius- posterior

Question 13

What is the origin of the SCM

Answer 13

Sternal head: sternum

Clavicular head: clavicle

Question 14

What is the origin of the SCM

Answer 14

Mastoid process, occiput

Question 15

What is the innervation of the SCM

Answer 15

Cranial nerve XI (spinal accessory) – motor

VPR C2,3 spinal nerve – sensory

Question 16

What is the action of SCM

Answer 16

Unilateral– ipsilateral flexion and contralateral rotation of neck and head
Bilateral– flexion of neck and extension of head

Question 17

What are borders of the submandibular triangle

Answer 17

Posterior belly of digastric
Anterior belly of digastric
Body of mandible

Question 18

What are the contents of the submandibular triangle

Answer 18

Submandibular gland

Facial artery and vein

Question 19

What are the borders of submental triangle

Answer 19

Hyoid bone
Anterior bellies of digastric m
Skin of anterior neck

Question 20

What are the borders of the carotid triangle

Answer 20

Posterior belly of digastric
SCM
Superior belly of omohyoid

Question 21

What are the contents of the carotid triangle

Answer 21

Common carotid artery and bifurcation
Internal jugular vein
Cranial nerve X (vagus nerve)

Question 22

What are the borders of the muscular triangle

Answer 22

Superior belly of omohyoid
SCM
Anterior midline of neck

Question 23

What are the contents of the muscular triangle

Answer 23

Infrahyoid mm
Thyroid gland
Larynx

Question 24

What are the borders of the supraclavicular triangle

Answer 24

Inferior belly of omohyoid
Clavicle
SCM

Question 25

What are the borders of the occipital triangle

Answer 25

Trapezoid SCM inferior belly omohyoid

Question 26

What are the contents of the occipital triangle

Answer 26

Cranial nerve XI | several cutaneous nerves from cervical plexus

Question 27

What is the cervical plexus formed by

Answer 27

Ventral rami of C1-4

Question 28

What nerve is formed by ventral rami of C2

Answer 28

Lesser occipital nerve

Question 29

What does the lesser occipital nerve innervate

Answer 29

Skin of posterior scalp behind the ear

Question 30

What nerve is made from the fibers of ventral rami of C2-3

Answer 30

Great auricular nerve

Question 31

What does the great auricular nerve innervate

Answer 31

Sensory innervation to skin below and anterior to external ear and part of errand skin over angle of mandible

Question 32

What nerves is the transverse cervical nerve derived from

Answer 32

Ventral rami of C2-3

Question 33

What is nerve is made from C3-4 ventral rami

Answer 33

Supraclavicular nerves

Question 34

What does the supraclavicular nerve innervate

Answer 34

Innervates the skin of the base of neck, upper thorax, and top of shoulder

Question 35

Which nerves hitchhike on Cranial nerve XI

Answer 35

C2,3,4

Question 36

Which nerve sometimes hitchhikes with cranial nerve XII

Answer 36

C1