Head and Neck

Question 1

Where does the trachea lie?

Answer 1

Over the 3rd-4th tracheal cartilages

Question 2

What lies anterior to the trachea?

Answer 2

The strap muscles

Question 3

What lies posterior to the trachea?

Answer 3

The parathyroid glands

Question 4

What is the blood supply to the trachea?

Answer 4

Superior thyroid artery

Inferior thyroid artery

Question 5

What veins drain the thyroid gland?

Answer 5

Superior, middle and inferior thyroid veins

Question 6

What are the margins of the anterior triangle of the neck?

Answer 6

Midline of neck
Anterior border of sternocleidomastoid
Ramus of the mandible

Question 7

What are the margins of the posterior triangle of the neck?

Answer 7

Posterior margin of sternocleidomastoid
Anterior margin of trapezius
Mid 1/3rd of clavicle

Question 8

What are the 3 branches of the facial nerve given off at the temporal bone?

Answer 8

Greater superficial petrosal nerve –> lacrimation
Nerve to stapedius
Chords tympani: anterior 2/3rds of taste

Question 9

What are the 5 motor branches of the facial nerve?

Answer 9

Temporal 
Zygomatic
Buccal
Mandibular
Cervical

Question 10

Why do UMN lesions of the facial nerve have forehead sparing?

Answer 10

Suprapontine crossover –> bilateral representation of the forehead