Pharynx and Pre-vertebral Flashcards Preview

Gross Anatomy 2 > Pharynx and Pre-vertebral > Flashcards

Flashcards in Pharynx and Pre-vertebral Deck (52)
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1

Pharynx

Shape

Upper funnel end shaped at base of skull - joins oesophagus at C6

2

Pharynx

Mucous membrane

Nasal, mouth, larynx, tympanic cavity

3

Pharynx

Ciliated columnar epithelium

Superiorly to stratified squamous inferiorly

4

Pharynx

Fibrous layer

Under epithelium - connects to base of skull and into submucous coat of oesophagus

5

Pharynx

Muscular layer

Under fibrous layer and has almost circular constrictor muscles and longitudinal muscles

6

Pharynx Divisions

7

Nasopharynx

Position

Behind nasal cavities, above soft palate

8

Nasopharynx

Boundaries

Roof - Sphenoid, occipital and pharyngeal tonsil

Floor - Soft palate - pharyngeal isthmus

Anterior - Nasal passages

Posterior - Roof and CI level

Lateral - Auditory/Eustacian tube, salpingopharyngeal fold

9

Oropharynx

Position

From soft palate to upper border of epiglottis

10

Oropharynx

Boundaries

Roof - soft palate

Floor - Posterior third of tongue, lingual tonsil and glossoepigottic folds

Anterior - Mouth

Posterior - C2/3 level

Lateral - Palatoglossal and palatopharyngeal folds with palatine tonsil

11

Palatoglossus, palatine tonsil and palatopharyngeus

12

Laryngopharynx

Position

Behind larynx and laryngeal opening

13

Laryngopharynx

Boundaries

Anterior - Larynx

Posterior - C vertebrae 3-6

Lateral - Supported by thyroid cartilage, aryepiglottic fold and thyrohyoid membrane

14

Superior Constrictor

Attachments

Lower part (posterior) medial pterygoid plate, hamulus, pterygomandibular ligament, mandible, side of tongue

To pharyngeal tubercle of occipital bone, fibrous raphe and middle constrictor

15

Superior Constrictor

Function

Upper fibres pull posterior pharyngeal wall anteriorly to close off nasopharynx

Propel food to middle constrictor.

16

Superior Constrictor

Innervation

Pharyngeal plexus (vagus)

17

Middle Constrictor

Attachments

Lower part of the stylohyoid ligament to the greater and lesser cornua of the hyoid bone

To raphe but also blend with superior and inferior constrictor

18

Middle Constrictor

Function

Propel food towards inferior constrictor

19

Middle Constrictor

Innervation

Pharyngeal plexus (vagus)

20

Inferior Constrictor

Attachments

Lamina of thyroid cartilage and cricoid cartilage

To raphe and blend with middle constrictor and oesophagus

21

Inferior Constrictor

Functon

Propels food to oesophagus

22

Inferior Constrictor

Innervation

Pharyngeal plexus (vagus)

23

Inferior Constrictor

24

Longitudinal Muscles - Stylopharyngeus

Attachments

Base of styloid process of temporal bone to posterior border of thyroid cartilage, across the internal carotid artery.

Passes between superior and middle constrictors. 

25

Longitudinal Muscles - Stylopharyngeus

Function

Elevates larynx and pharynx during swallowing

26

Longitudinal Muscles - Stylopharyngeus

Innervation

Glossopharyngeal nerve

27

Longitudinal Muscles - Salpingopharyngeus

Attachments

 

Cartilage of auditory tube to blend with palatopharyngeus

28

Longitudinal Muscles - Salpingopharyngeus

Function

 

Elevates pharynx

29

Longitudinal Muscles - Salpingopharyngeus

Innervation

 

Pharyngeal plexus (vagus)

30

Longitudinal Muscles - Palatopharyngeus

Attachments

 

Hard palate and palatine aponeurosis to the lamina of thyroid cartilage (posterior)