Week 1 Dry

Question 1

Four compartments of the neck in transverse plane?

Answer 1

• Visceral Compartment
• Vascular Compartment (Carotid Sheath)
• Vertebral Compartment
• All enclosed in musculofascial Collar

Question 2

Parts of cervical vertebrae?

Answer 2

Biphid Spinous process
Transverse processes contianing transverse foramen
Articular Facets

Question 3

Important Cervical Vertebrae and their joints?

Answer 3

Atlas (C1) - Synovial Condyler to Occipital bone
Axis (C2) - Synovial Pivot to Atlas (Dens)
Vertebra Prominens (C7)

Question 4

Triangles of neck?

Answer 4

Ant & Post divided by SCM
Ant split into:
- Submental (Above hyoid and in front of digastric)
- Submandibular (Above Hyoid and behind Digastric)
- Carotid (Below Hyoid and behind Omohyoid)
- Muscular (Below Hyoid and in front of omohyoid)

Question 5

Contents of the 4 anterior neck triangles?

Answer 5

Submental - Lymph nodes
Submandibular - Facial Art & Submandibular gland
Carotid - Carotid Sheath (IJV-Vagus-CCA)
Muscular - Strap Muscles

Question 6

Contents of Post Triangle of neck?

Answer 6

Accessory Nerve
Brachial Plexus (C5-T1) Emerges through scalenes here

Question 7

What level does the CCA bifurcate?

Answer 7

C4

Question 8

Terminal Branches of ECA?

Answer 8

Superfical Temporal Art & Maxillary Art given off in parotid gland

Question 9

Where does phrenic nerve arise from and where does it run regarding the carotid sheath?

Answer 9

Cervical Plexus (C3-4-5)
Deep to carotid sheath

Question 10

Parts of hyoid bone?

Answer 10

Body
Greater Horn (Cornua)
Lesser Horn (Cornua)

Question 11

What muscles attach to hyoid?

Answer 11

Supra & Infra Hyoids
Middle Pharyngeal Constrictor
Hyoglossus

Question 12

Name and innervate the suprahyoid muscles?

Answer 12

• Ant Belly of Digastric = Mylohyoid Nerve (V3)
• Post Belly of Digastric = Facial Nerve (VII)
• Mylohyoid = Mylohyoid Nerve (V3)
• Stylohyoid = Facial Nerve (VII)
• Geniohyoid = C1 via Cr N XII

Question 13

Function of Suprahyoid muscles?

Answer 13

Elevate hyoid and/or lower mandible

Involved in mastication and swallowing

Question 14

Name and innervate the infrahyoids?

Answer 14

• Sternohyoid = Ansa Cervicalis (Cervical Plexus)
• Sternothyroid = Ansa Cervicalis)
• Thyrohyoid = C1 Via Cr N XII
• Omohyoid = Ansa Cervicalis

Question 15

Function of infrahyoids (Strap muscles)?

Answer 15

Depress hyoid and larynx for speech and swallowing

Question 16

Roots of Cervical plexus?

Answer 16

C1-4

Question 17

Where does the cervical plexus exit the neck?

Answer 17

Through ant/middle scalenes

Question 18

Define Ansa Cervicalis?

Answer 18

A loop of cervical plexus with C1-3 roots that supplies all the infrahyoids except the thyrohyoid

Question 19

What are the parts of the thyroid gland?

Answer 19

Isthmus connecting two lobes horizontally.

Parathyroid glands on posterior surface of thyroid gland

Question 20

LEvel of Thyroid gland?

Answer 20

2nd-3rd rings of tracheal cartilage

Question 21

Compartment containing thyroid gland?

Answer 21

Visceral Compartment of neck

Question 22

Describe the blood supply of the thyroid gland?

Answer 22

Arterial:

• Sup Thyroid Art (ECA)
• Inf Thyroid Art (Subclavian)

Venous:

• Sup Thyroid Vein (IJV)
• Middle Thyroid Vein (IJV)
• Inf Thyroid Vein (Brachiocephalic vein)

Question 23

Nervous innervation of thyroid gland?

Answer 23

Recurrent and external laryngeal nerves from Vagus