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Flashcards in Pharynx Deck (53):
1

Pharynx conducts food to the _______ and air to the _______.

Esophagus
Larynx

2

Pharynx considered to be part of what systems

Digestive and respiratory

3

Pharynx extends from ________ to _________.

Base of skull
Inferior border of cricoid cartilage

4

Pharynx lies posterior to what 3 structures

Nasal cavity
Oral cavity
Larynx

5

3 parts of pharynx

Nasopharynx
Oropharynx
Laryngopharynx

6

Nasopharynx location

Posterior to nasal cavity

7

Oropharynx location

Posterior to oral cavity

8

Laryngopharynx location

Posterior to larynx

9

Nasopharynx communicated with nasal cavity through

Choanae

10

Nasopharynx communicated with oropharynx through

Pharyngeal isthmus

11

During swallowing, pharyngeal isthmus is

Closed

12

Boundaries of nasopharynx

Roof of pharynx
Soft palate
Posterior border or inferior nasal concha
Posterior wall of pharynx

13

Pharyngeal tonsils AKA

Adenoids

14

Pharyngeal tonsils embedded in

Posterior wall of nasopharynx

15

What tube opens into lateral wall of nasopharynx

Pharyngotympanic tube

16

Cartilaginous structure above opening to pharyngotympanic tube

Torus tubarius

17

Pharyngotympanic tube connects nasopharynx to

Middle ear

18

Pharyngotympanic tube function

Equalizes pressure between nasopharynx and tympanic cavity

19

Small tonsil embedded in torus tubarius

Tubal tonsil

20

Salpingopharyngeal fold location

From torus tubarius to wall of pharynx

21

Muscle deep to salpingopharyngeal fold

Salpingopharyngeus

22

Boundaries of oropharynx

Soft palate
Superior border of epiglottis
Palatoglossal fold
Posterior wall of pharynx

23

Oropharynx lies at what vertebral level

C2-C3

24

Oropharynx communicates with oral cavity via

Oropharyngeal isthmus

25

Oropharyngeal isthmus bounded by

Palatoglossal folds

26

Tonsils located in oropharynx

Palatine tonsils

27

Palatine tonsils located between what two folds

Palatoglossal fold
Palatopharyngeal fold

28

Palatoglossal fold runs from ____ to _____.

Soft palate to tongue

29

Palatopharyngeal fold runs from ____ to _____.

Soft palate to wall of pharynx

30

Space between palatoglossal and palatopharyngeal folds

Tonsillar fossa— may contain palatine tonsils

31

Tonsillar ring

Circular arrangement of tonsils around oropharynx

32

Tonsils included in tonsillar ring

Lingual
Palatine
Tubal
Pharyngeal

33

Boundaries of laryngopharynx

Superior epiglottis
Lower cricoid cartilage
Posterior larynx
Posterior pharynx

34

Laryngeal inlet

Opening into larynx

35

Laryngeal inlet location

Laryngopharynx

36

Piriform fossa

Recess in anterior wall of laryngopharynx
On either side of laryngeal inlet

37

Muscles of external layer of pharynx

Inferior constrictor
Middle constrictor
Superior constrictor

38

External layer of pharyngeal muscles function

Contract pharynx during swallowing

39

Innervation of external layer of pharyngeal muscles

Vagus nerve via pharyngeal plexus

**inferior constrictor also innervated by external laryngeal nerve**

40

Inferior constrictor muscle innervation

Vagus nerve via pharyngeal plexus AND external laryngeal nerve

41

Palatopharyngeal sphincter

Specialized band of muscle form by superior constrictor

42

Palatopharyngeal sphincter function

Helps seal pharyngeal isthmus during swallowing

43

Pharyngeal muscles of longitudinal layer

Stylopharyngeus
Palatopharyngeus
Salpingopharyngeus

44

Longitudinal layer of pharyngeal muscles innervation

Vagus nerve via pharyngeal plexus

**EXCEPT stylopharyngeus= glossopharyngeal nerve**

45

Stylopharyngeus muscle innervation

Glossopharyngeal nerve

46

Longitudinal layer of pharyngeal muscles action

Elevate pharynx

Palatopharyngeus also narrows oropharynx
Salpingopharyngeus also opens pharyngotympanic tube

47

Pharyngeal plexus lies on what muscle

Middle constrictor

48

3 parts of pharyngeal plexus

Pharyngeal branch of vagus
Pharyngeal branch of glossopharyngeal
Sympathetic fibers from superior cervical ganglion

49

Arteries of pharynx

Ascending pharyngeal artery
Maxillary artery

50

Buccopharyngeal fascia

Surrounds pharynx external to muscles of pharynx

Continuous w/ pretracheal fascia

51

Pharyngobasilar fascia

Lies internal to muscles and external to mucosa of pharynx

52

Retropharyngeal space

Potential space between buccopharyngeal fascia and prevertebral fascia

53

Retropharyngeal space permits

Free movement of pharynx and esophagus during swallowing