Neck

Question 1

External jugular vein formed by?

Answer 1

Posterior branch of retromandibular vein and posterior auricular vein

Question 2

Tributaries of external jugular vein

Answer 2

Anterior jugular vein
Suprascapular vein
Transverse cervical vein

Question 3

Applied anatomy of external jugular vein

Answer 3

Air embolism
If vein is cut an inch above the clavicle then the lumen is left open and air is sucked into the lumen which results in air embolism which can lead to death
It is used to measure pressure in right atrium

Question 4

Layers of deep cervical fascia

Answer 4

Investing
Pretrachial
Prevertebral

Question 5

Attachments of investing layer

Answer 5

Anterior- hyoid bone
Symphysis menti
Oblique line of thyroid cartilage
Posterior - ligamentum nuchae
Spine of 7th cervical vertebrae
Superior - external occipital protuberance 
Superior nuchal line
Mastoid process
Base of mandible
Inferiorly- spine of scapula
Acromion process of scapula
Clavicle
Manubrium sterni