Pharynx

Question 1

Pharynx description

Answer 1

Midline muscular pathway for ingestion of food and for respiration

Question 2

Pharynx arises from ____ to ____

Answer 2

Base of skull
C6

Question 3

Divided into

Answer 3

3 sections
Naso + oro + laryngopharynx

Question 4

Pharyngeal wall has

Answer 4

4 layers
Mucosa + submucosa (tough fascia) + muscular + loose connective tissue

Question 5

Anterior to pharynx

Answer 5

Nose + mouth

Question 6

Posterior to pharynx

Answer 6

Retropharyngeal space , prevertebral fascia , upper six cervical vertebrae

Question 7

Superior to pharynx

Answer 7

Sphenoid (body) , occipital (basilar region) bones

Question 8

Inferior to pharynx

Answer 8

Continue to esophagus

Question 9

Pharynx constrictor muscles

Answer 9

3 paired muscles
Inf + mid+ sup constrictors

Question 10

Pharynx elevator muscles

Answer 10

Stylopharyngeus
Salpingopharynngeus
Paltopharyngeus

Question 11

Swallowing phase1

Answer 11

Food bolus pushed towards oropharynx by tongue

Question 12

Swallowing phase2

Answer 12

respiration is halted, the oropharynx and nasopharynx close, the larynx is elevated, constricted and pushed forward, and the bolus passes over (protective) the epiglottis into the pharynx.
Constrictor muscles ensure the consecutive propulsion into the oesophagus

Question 13

Swallowing phase3

Answer 13

once it is in the esophagus, peristaltic waves ensure the progression of the bolus to the stomach

Question 14

Pharynx arteries

Answer 14

ascending pharyngeal, facial, maxillary, lingual (to epiglottis) and both thyroid arteries

Question 15

Pharynx Venous

Answer 15

Pharyngeal plexus into int jugular

Question 16

Pharynx nerves

Answer 16

Sensory : pharyngeal branches of glossopharyngeal (IX) and vagus (X) nerves
Motor : vagus via the pharyngeal plexus (except stylopharyngeus IX)