Pharynx

Question 1

What are the branches of the subclavian artery?

Answer 1

Vertebral artery
Internal thoracic artery 
Thyrocervical trunk 
costocervical trunk 
Deep scapular artery

Question 2

Blood supply to pharynx?

Answer 2

naso = branches of maxillary (greater palatine, pharyngeal)

ascending pharyngeal artery = direct branch of external carotid

Question 3

Which veins do pharyngeal plexus communicate with?

Answer 3

Facial and internal carotid

Question 4

Lymphatics of pharynx

Answer 4

retropharyngeal & paratracheal then to deep cervical

Question 5

Name the pre-vertebral muscles

Answer 5

Longus capitis
Longus colli
Rectus capitis anterior
Rectus capitis lateralis

Question 6

which prevertebral muscle is crossed by internal jugular vein?

Answer 6

Rectus capitis lateralis

Question 7

superior cervical ganglia roots

Answer 7

C1-4

Question 8

Middle cervical ganglia roots

Answer 8

C5,6

Question 9

Branches of superior cervical ganglia

Answer 9

internal and external carotid plexus
CN IX, X, XII
contributes to pharyngeal and cardiac plexus

Question 10

At what level is the middle cervical ganglion found?

Answer 10

cricoid cartilage

Question 11

Level of nasopharynx?

Answer 11

C1

Question 12

Level of oropharynx?

Answer 12

C2,C3

Question 13

Level of laryngopharynx?

Answer 13

C3-6

Question 14

Name the longitudinal muscles of the pharynx

Answer 14

Stylopharyngeus, salpingopharyngeus,

palatopharyngeus

Question 15

Which nerve innervates the constrictor muscles of pharynx?

Answer 15

Pharyngeal plexus

VAGUS

Question 16

Which longitudinal muscle is innervated by glossopharyngeal?

Answer 16

Stylopharyngeus

Question 17

action of constrictor muscles?

Answer 17

All propel food downward but upper fibre of superior constrictor pulls pharyngeal wall anteriorly closing off nasopharynx preventing aspiration

Question 18

What structure passes between oesophagus and trachea then inferior to inferior constrictor?

Answer 18

Recurrent laryngeal nerve

Question 19

What structure is found through the thyrohyoid membrane ?

Answer 19

Superior laryngeal nerve

Question 20

Which structures form anterior and posterior palatine arches?

Answer 20

Anterior = Palatoglossus

Posterior = Palatopharyngeus