Anatomy Larynx

Question 1

Extension of larynx from c.. To c..

Answer 1

C3 to C6

Question 2

The only muscle causing abduction of vocal cords

Answer 2

Posteroir crico-aretynoid

Question 3

Nerve supply of larynx

Answer 3

Vagus divides into superior laryngeal and recurrent laryngeal
Sup. Laryngeal further divides into internal and external laryngeal

. Sensory Above vocal cords: internal laryngeal N.
. Motor to cricothyroid: external laryngeal
. Motor to all muscle except cricothyroid and sensory below vocal cords: recurrent laryngeal N.

Question 4

Blood supply of larynx

Answer 4

. Sup. Laryngeal and sup. Thyroid
. Inf. Laryngeal and Inf. Thyroid