The pharynx and palate Flashcards Preview

NLM2 Anatomy > The pharynx and palate > Flashcards

Flashcards in The pharynx and palate Deck (22):
1

What is the pharynx?

Fibromuscular tube which extends from base of skull to oesophagus. Has a common entrance for respiratory and alimentary tracts
Naso->oro->laryngopharynx

2

What are the 5 layers of the pharyngeal wall?

Mucosa, submucosa, fibrous CT (pharyngobasilar fascia muscularis w/ inner longitudinal and outer circular), thin areolar layer

3

What is found in the posterior and lateral walls of the pharynx?

Paired superior, middle and inferior constrictor muscles that overlap eachother. Forms the outer circular layer of pharynx

4

What forms the inner longitudinal layer of the pharynx?

Stylopharyngeus, palatopharyngeus, salpingopharyngeus

5

What innervates the constrictors of the pharynx?

Vagus nerve

6

What cranial nerves are found between the internal carotid artery and the internal jugular vein in the neck?

CNIX, X, XI, XII

7

What structures does the glossopharngeal nerve supply in the neck?

After passing through the pharyngeal plexus it supplies the tonsils and pharyngeal mucosa

8

What does the vagus supply in the neck?

Pharyngeal constrictor muscles, carotid body and carotid sinus

9

What is the hard palate composed of?

Fused palatal processes of the maxilla and the palatine bones

10

How do you test CN IX (glossopharyngeal)?

Touch spatula against posterior wall of the pharynx on either side
This will elicit the gag reflex if the palate is tensed

11

Name the 5 palatal muscles

Tensor and levator palatini, palatoglossus, palatopharyngeas and musculus uvulae.

12

Where do the tensor and levator palatini muscles lie?

Above the soft palate
Tensor palatini spreads out horizontally in the soft palate to form an aponeurosis for other palatine muscle attachment

13

Function of the palatine canals?

To transmit palatine nerves (branches of maxillary CNV2) from pterygopalatine fossa to hard palate

14

Tensor palatini is innervated by what?

Medial pterygopalatine nerve (branch of mandibular)

15

Levator palatini is innervated by what?

Pharyngeal branch of vagus (CNX)

16

What innervates most of the palatine muscles?

Pharyngeal branch of vagus (apart from tensor palatini)

17

What is the sensory innervation of the palate?

Maxillary nerve (except tiny part glossopharyngeal)

18

What is the innervation of the glands of the palate?

Parasympathetic fibres that run with the maxillary palatine nerves, come from pterygopalatine ganglion

19

Name the 4 tonsils

Pharyngeal, lingual and two palatine

20

Why is the paratonsillar vein important?

Passes from soft palate across tonsillar capsule, may cause haemorrhage in a tonsillectomy

21

What is the lymphatic drainage of the tonsils?

Through superior constrictor to jugulodigastric node

22

What is quinsy?

Peritonsillar tissue infection-> abscess