Clinical Relevance Of The Gag Reflex 2 Flashcards Preview

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Flashcards in Clinical Relevance Of The Gag Reflex 2 Deck (55):
1

What si the pharynx involved in

Breathing
Speaking
swallowing
Coughing
Sneezing
Vomiting
Gagging

2

What is aspiration

Inhalation of solid/liquid into lungs
Usually fragments of teeth, amalgam material

Pharynx protects against this

3

What are the parts of the pharynx

Nasopharynx
Oropharynx
Laryngopharynx

4

What si the nasopharynx

Posterior to nasal cav
Base sphenoid bone down soft palate
Pharyngeal tonsils

5

Where si the oropharynx

Behind oral cav

6

Where is the laryngopharynx

Form sup border of epiglottis and rus down and meets oes starts about c6

7

What are the components of the RESP tract

Nasal cav
Oral cav
Larynx
Trachea

8

What si the alimentary canal

Oral cav
Oesophagus
Pathway for food

9

What are the layers form the pharynx to the vertebrae

Pharynx
Pharyngeal muscle
Buccooharyngeal fascia
Alar fascia
Retropharyngeal space
Prevertebral fascia
Prevertebral muscle
Vertebra

10

Why is the retropharyngeal space of importance

Let's pharynx and larynx move relative to vertebrae
Clinically imp as adipose tissue and lymphatics
May cause spread of infection

11

What are the external muscles of the pharynx

Circular muscles

12

How are the circular muscles related to eachother

Overlap eachother

13

Are circular muscles vol or invol

Vol

14

What is unusual about the contraction of the circular muscles

Sequential
Invol

15

What innervates the circular muscles

Vagus
Pharyngeal plexus

16

Where do the circular muscles insert onto

The midline raphe

17

What si the fascia between the superior circular muscle and the occipital bone

Pharyngo- basilar fascia

18

What a re the circular muscles

Superior
Middle
Inferior

19

What are the attachments of the superior circular muscles

Pterygoid hamulus
Pterygomandibular raphe
Mylohyoid line

20

What are the attachments of the Middle circular muscle

Greater horn of sphenoid

21

What a re the attachments of the inferior circular muscle

Thyroid cartilage ( oblique line)
Cricoid cartilage

22

What are the gaps between the circular muscles

Gateway to the mouth

23

What travels through the gateway to the mouth

Lingual artery
Stylophafyngeus
Glossopharyngeal nerve

24

What are the the internal muscles of the pharynx

Longitude dinar

25

What are the longitudinal muscles of the pharynx

Stylophafyngeus
Palatopharyngeus
Salpingopharyngeus

26

What is the different longitudinal muscle

Stylophafyngeus

27

Where does the stylophafyngeus insert from and travel through

Form styloid process
Travel through gateway to the mouth with Glossopharyngeal nerve

28

What innervates the stylophafyngeus

Only one supplied by Glossopharyngeal

29

Where does the cricopharungeaus connect from

Connect from soft palate

30

Where does the salpingopharyngeus connect form and what is it made from

Opening of auditory tube
Cartilage of pharyngotympanic tube

31

Where do all longitudinal muscles insert onto

Posterior border of thyroid cartilage and wall of pharynx

32

What si the action of the longitudinal muscles to the pharynx and larynx

Elevate

33

What innervates the salpingopharyngeus and cricopharungeaus

Vagus

34

What kind of cartilage is the epiglottis

Elastic

35

What si the valeculla

Depression between posterior base of tongue and epiglottis

36

What a re choana

Holes spaces lead to nasal cav

37

What si the uvula

Muscularis uvulae
Dangle
Skeletal muscle

38

What are trh pisiform fossa

Spaces depressions either side of larynx

39

What sit he laryngeal inlet

Beginning of the larynx

40

What composes the pharyngeal plexus

Nerve fibres form vagus and Glossopharyngeal, symp axons and parasymp axons

41

What are the MAIN motor and sensory contributions to the pharyngeal okexus

Motor mainly vagus
Sensory mainly Glossopharyngeal

42

What supplies the motor innervation to the muscle of the pharynx

All vagus excluding stylophafyngeus which is innervated by Glossopharyngeal

43

What innervates the mucosa of the pharynx

Mainly Glossopharyngeal
Parts nasopharynx V2
Parts laryngopharynx vagus

44

What si the sensory innervation of the nasopharynx

V2 just anterior and superior to auditory tube
Glossopharyngeal

45

What si the sensory innervation of the oropharynx

Glossopharyngeal
Tonsilar fossa and posterior tongue

46

What is the sensory of the laryngopharynx

Glossopharyngeal just SUPEIROR to epiglottis
Vagus

47

What kind of reflex is the gag reflex

Protective

48

What nerves does the gag reflex stimulate

Mainly Glossopharyngeal
Post 1/3rd tongue
Tonsils
Wall oropharynx

49

What does the gag reflex attempt to do

Close off oropharynx before laryngopharynx

50

What are the muscles involved in the gag reflex

Constructors if the pharynx
Longitudinal muscles of pharynx
Tongue soft palate

51

What is the first step of swallowing

Food bolus squeezed to back of mouth
Tongue against palate

52

What is the second stage of swallowing

Nasopharynx closed off
Larynx elevated
Pharynx enlarged to recieve bolus

53

What si the third stage of swallowing

Pharyngeal constructors contract sequentially
Epiglottis deflects bolus

54

What si the final stage of swallowing

Bolus moves into oes

55

What is the pharynx

Space that connects mouth/nose above to the larynx
Mouth to the oes