Neck Myology

Question 1

Boundaries of the Posterior Triangle

Answer 1

SCM m.
Trapezius m.
Clavicle

Question 2

Boundaries of the Occipital Triangle

Answer 2

SCM m.
Trapezius m.
Omohyoid m.

Question 3

Boundaries of the Omoclavicular/Supraclavicular Triangle

Answer 3

SCM m.
Omohyoid m.
Clavicle

Question 4

Contents of Occipital Triangle (3)

Answer 4

External jugular v.
Posterior branches of the cervical plexus
Transverse cervical a.

Question 5

Contents of the Omoclavicular/Supraclavicular Triangle (2)

Answer 5

3rd part of the Subclavian a.

Suprascapular a.

Question 6

Innervation of Trapezius m.

Answer 6

Spinal accessory n. (CN XI)

Question 7

Innervation of Sternocleidomastoid m.

Answer 7

Spinal accessory n. (CN XI)

Question 8

Innervation of Levator Scapulae m.

Answer 8

Dorsal scapular n.

Question 9

Congenital Torticollis

Answer 9

Congenital disorder from a fibrous tumor that forms in the SCM m. and causes the face to turn and the face to look away from the affected side.
A hematoma can arise and impinge CN XI.

Question 10

Spasmodic Torticollis

Answer 10

An adult onset involving abnormal tonicity of SCM m. and Trapezius m.

Question 11

Anterior scalene m. innervation

Answer 11

C4-6

Question 12

Middle scalene m. innervation

Answer 12

C3-8

Question 13

Posterior scalene m. innervation

Answer 13

C5-7

Question 14

Borders of the Anterior Triangle

Answer 14

Median line of the neck
SCM m.
Mandible

Question 15

Muscular content of the Anterior Triangle (7)

Answer 15

Mylohyoid m.
Geniohyoid m.
Digastric m.
Stylohyoid m.
Sternothyroid m.
Thyrohyoid m.
Superior belly of Omohyoid m.

Question 16

What separates the Submental Triangle and the Submandibular Triangle?

Answer 16

Anterior belly of digastric m.

Question 17

Contents of Submental Triangle (3)

Answer 17

Submental a.
Submental LNs
Submental small veins

Question 18

Contents of Submandibular triangle (4)

Answer 18

Submandibular gland
Hypoglassal n.
N. to Mylohyoid m.
Parts of Facial n.

Question 19

What separates the Muscular triangle and the Carotid triangle?

Answer 19

Superior belly of Omohyoid m.

Question 20

Contents of the Muscular triangle (2)

Answer 20

Thyroid gland

Parathyroid glands

Question 21

Contents of the Carotid triangle (10)

Answer 21

Common carotid a.
Internal jugular v.
Vagus n.
Hypoglossal n.
Spinal accessory n. 
Superior root of Ansa Cervicalis
Thyroid gland
Larynx
Pharynx
Branches of cervical plexus

Question 22

Innervation of Mylohyoid m.

Answer 22

Mylohyoid n.

Question 23

Innervation of Geniohyoid m.

Answer 23

C1 via Hypoglossal n.

Question 24

Innervation of Digastric m. (anterior and posterior bellies)

Answer 24

Ant.: Mylohyoid n.

Post.: Facial n.

Question 25

Innervation of Stylohyoid m.

Answer 25

Facial n.

Question 26

Innervation of Sternohyoid m.

Answer 26

Ansa Cervicalis

Question 27

Innervation of Sternothyroid m.

Answer 27

Ansa Cervicalis

Question 28

Innervation of Thyrohyoid m.

Answer 28

C1 via Hypoglossal n.

Question 29

Innervation of Omohyoid m.

Answer 29

Ansa Cervicalis

Question 30

Innervation of Platysma m.

Answer 30

Cervical branch of Facial n.

Question 31

Innervation of Pharyngeal muscles

Answer 31

Pharyngeal branch of Vagus n.
Pharyngeal plexus
Branches of Recurrent Laryngeal n.

Question 32

Innervation of Stylopharyngeus m.

Answer 32

Glossapharyngeal n. (CN IX)

Question 33

Innervation of Laryngeal muscles

Answer 33

Recurrent Laryngeal n.

Question 34

Innervation of Longus Colli m.

Answer 34

C2-6

Question 35

Innervation of Longus capitis m.

Answer 35

C1-3

Question 36

Innervation of Rectus Capitis m. and Rectus Capitis Lateralis m.

Answer 36

C1-2

Question 37

Zone 1 of Penetrating Neck Injuries

Answer 37

Clavicle to cricoid cartilage.

Great vessels, trachea, esophagus, lung apices, c-spine, SC.

Question 38

Zone 2 of Penetrating Neck Injuries

Answer 38

Cricoid cartilage to angle of mandible.

Carotid and vertebral as., jugular vs., pharynx, larynx, trachea, esophagus, c-spine, SC.

Question 39

Zone 3 of Penetrating Neck Injuries

Answer 39

Angle of mandible to base of skull.

Salivary glands, parotid glands, esophagus, trachea, vertebrae, carotid as., jugular vs., SC.