Head and Neck Practical 1 Flashcards
Describe course of external jugular vein
Formed just inferior to ear, makes it way across angle of mandible and passes superficially across sternocleidomastoid muscle, passes through posterior triangle of neck and drains into subclavian vein
At what vertebral level do we find the hyoid bone?
C3
At what vertebral level do we find the thyroid cartilage?
C4-C5
At what vertebral level do we find the cricoid cartilage?
C6
At what vertebral level do we find the bifurcation of the common carotid artery?
C3-C4
What is this bone?

Mandible
What is this bone?

Hyoid
What is this?

Thyroid cartilage (esp. laryngeal prominence/Adam’s apple)
What area is being pointed to?

Anterior triangle of neck
What area is being pointed to?

Posterior triangle of neck
What muscle is being pointed to?

Sternocleidomastoid muscle - forming division between anterior and posterior triangle
What is the base/superior border of the anterior triangle?
The inferior border of the mandible

What is the anterior border of the anterior triangle?
Midline of neck

What is the posterior border of the anterior triangle?
Anterior border of sternocleidomastoid muscle

Contents of anterior triangle?
- Suprahyoid muscles
- Infrahyoid muscles
- All of these are in anterior triangle except the inferior belly of omohyoid which is found in the posterior triangle
- Common carotid artery
- Internal jugular vein
- Lobes of thyroid gland (deep to infrahyoid muscles)
What is being pointed to?

Inferior belly of omohyoid
What vessel is being pointed to?

Common carotid artery
What vessel is being pointed to?

Internal jugular vein (deep to SCM)
What is being pointed to?

SCM
What forms base of posterior triangle?
Clavicle

What forms anterior boundary of posterior triangle?
Posterior aspect of SCM

What forms posterior boundary of posterior triangle?
Anterior border of trapezius muscle

Contents of posterior triangle?
- Inferior belly of omohyoid
- Trunks of brachial plexus
- Accessory nerve (CN XI)
- Apex of lung
- External jugular vein
What is being pointed to?

A trunk of brachial plexus










































