Pharynx

Question 1

Pharynx

Answer 1

Funnel shaped muscular tube (wide above 3.5 cm and narrow below 1.5 cm) 5 inches long closed posterior and on sides extending from skull base to C6 vertebra to become esophagus

Question 2

Relations

Answer 2

1. Posterior wall
2. Anterior wall
3. Side (lateral wall)

Question 3

Posterior wall

Answer 3

1. Upper 6 cervical vertebrae
2. Prevertebral muscles and fascia
3. Retropharyngeal space (containing retropharyngeal lymph nodes)

Question 4

Anterior wall

Answer 4

(Deficient)
Pharynx lies behind nasal, oral, and laryngeal cavities communicating with them

Question 5

Side (lateral) wall

Answer 5

1. Carotid sheath (along all length)
2. Styloid process and its muscles (in upper part)
3. Thyroid lobe (in lower part)

Question 6

Walls

Answer 6

5 layers
1. Mucosa
2. Submucosa
3. Pharygeobasilar fascia
4. Muscular layer
5. Buccopharyngeal fascia

Question 7

Atrial supply

Answer 7

1. Ascending palatine
   Facial artery
2. Pharyngeal branch
   Maxillary artery
3. Ascending pharyngeal
   ECA

Question 8

Nerve supply: motor

Answer 8

Pharyngeal plexus except Stylopharyngeus by Glossopharyngeal nerve

Question 9

Nerve supply: sensory

Answer 9

1. Nasopharynx:
   Sphenopalatine ganglion
2. Oropharynx:
   Glossopharyngeal nerve
3. Laryngopharynx:
   Internal laryngeal nerve

Question 10

Waldery’s ring (4 parts)

Answer 10

Lymphoid tissue aggregation at GIT and respiratory tract entrance:
1. Nasopharyngeal tonsil
2. Tubal tonsil
3. Palatine tonsil
4. Lingual tonsil

Question 11

Nasopharyngeal tonsil

Answer 11

(Superior)
At junction of roof and posterior wall nasopharynx

Question 12

Tubal tonsil

Answer 12

(Lateral)
Around auditory tube opening in lateral wall nasopharynx

Question 13

Palatine tonsil

Answer 13

(Lateral)
In lateral wall Oropharynx

Question 14

Lingual tonsil

Answer 14

(Inferior)
On Dorsum of tongue posterior 1/3