Pharynx Flashcards

1
Q

Unique Nature of Pharynx

A

Transports fluid, solid, and air

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2
Q

Inferior border of pharynx

A

C6 - start of esophagus

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3
Q

4 Muscles of Pharynx Visible Posteriorly

A

Sup. constrictor m.
Middle constricor m.
Inf. constrictor
Stylopharyngeus

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4
Q

3 Constrictor M.s Relation

A

Overlap each other, w/ inferior overlapping middle and mid overlapping sup

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5
Q

Hyoid Bone (2)

A

Sticks out posterolaterally and acts as anchorage for middle constrictor

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6
Q

Stylopharyngeus m.

A

Comes down into pharynx b/w middle and sup constrictors

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7
Q

Overall Innervation of Pharynx (source and 3 types)

A

Pharyngeal plexus - skeletal motor, cutaneous sensory from mucosal lining, and postganglionic symps going to blood vessels

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8
Q

Motor Innervation of Pharynx (2)

A

Pharyngeal branches of vagus n. (X)

Except stylopharyngeus innervated by glossopharyngeal n. (IX)

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9
Q

Sensory Innervation of Pharynx (3)

A

Pharyngeal branches of Glossopharyngeal n. (IX)

Except auditory tube region innervated by trigeminal n. (V) and lower pharynx by vagus n. (X)

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10
Q

Gag Reflex Nerve

A

Glossopharyngeal n. (IX) senses and Vagus (X) does motor - IX-X reflex arc

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11
Q

Blood Supply of Pharynx (3)

A

Ascending pharyngeal a. off ext. carotid
Facial a.
Maxillary a.

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12
Q

3 Regions of Pharynx

A

Nasopharynx, oropharynx, and laryngopharynx

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13
Q

Choana

A

Opening at end of turbinates which marks beginning of nasopharynx from nasal cavity

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14
Q

Pharyngeal (adenoid) Tonsil

A

Tonsil at very posterior/superior corner of nasopharynx

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15
Q

Sleep Apnea

A

Caused by enlargement of pharyngeal tonsils

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16
Q

Torus Tubarius

A

Projection of auditory tube on nasopharynx wall

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17
Q

Ostium of Auditory Tube

A

Opening for auditory tube just deep torus tubarius

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18
Q

Salpingopharyngeal Fold

A

Comes down from back of torus tubarius and runs down pharynx, covering salpingopharyngeus m.

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19
Q

Torus levatorus

A

Below ostium of auditory tube, impression of levator palatini m.

20
Q

Isthmus of Fauces

A

Big circular opening b/w oral cavity and oropharynx

21
Q

2 Lateral Folds of Isthmus of Fauces

A

Palatopharyngeal folds from palate to pharynx

Palatoglossal folds from palate to tongue

22
Q

Palatine Tonsils Location

A

B/w palatopharyngeal and palatoglossal folds

23
Q

Lingual Tonsil Location

A

Base of tongue

24
Q

Epiglottis

A

Cartilaginous structure that ascends in pharynx

25
Q

Aryepiglottic folds

A

folds coming down from either side of epiglottis forming entrance of larynx

26
Q

Cricopharyngeal portion of inferior constrictor muscle

A

Sphincter-like portion of muscle to constrict food going into esophagus

27
Q

Piriform recesses

A

Recesses formed above cricopharyngeal portion of inf constricto m. and around larynx where things could get stuck

28
Q

2 Structural Components of Hard Palate

A

Palatine process of maxilla

Horizontal Process of palatine bones

29
Q

Innervation of Hard Palate (Type and 2)

A

All sensory
Anterior: Nasopalatine n. (V2)
Posterior: Greater palatine n. (V2)

30
Q

Blood Supply of Hard Palate (2)

A

Ant: Sphenopalatine a.
Post: Greater palatine a.

31
Q

5 Muscles in Musculomembranous Sheet of Soft Palate

A
Levator veli palatini
Tensor veli palatini
Musculus uvulae
Palatopharyngeus
Palatoglossus
32
Q

Main Muscles for Lifting Soft Palate (2)

A

Lateral: Tensor veli palatini m. to tense soft palate/make it firm for lifting
Angled superior: Levator veli palatini m. to lift it

33
Q

Musculus uvalae m.

A

Central soft palate one hanging down towards uvulua

34
Q

Innervation of Soft Palate Muscles (2)

A

Vagus n. (X) except tensor veli palatini which is by V3

35
Q

8 Muscles Innervated by V3 (and why)

A

Masseter, medial/lateral pterygoid, temporalis, tensor tympani, tensor veli palatini, mylohyeloid and anterior belly of digastric
All came from first pharyngeal arch

36
Q

Sensory Innervation of Soft Palate (2)

A

Lesser palatine n. (V2)

Glossopharyngeal n. (IX)

37
Q

Blood Supply to Soft Palate (2)

A

Lesser palatine a.

Ascending palatine a. from facial a.

38
Q

Pterygomandibular raphe (3)

A

Lateral structure that prevents jaw from opening too wide where buccinator m. and superior constrictor m. come off (anteriorly and posteriorly, respectively)

39
Q

Glossopharyngeal n. (IX) motor innervation

A

Stylopharyngeus m. only

40
Q

Glossopharyngeal n. (IX) Sensory Innervation (4.2)

A

Pharyngeal plexus - mucous membrane
Posterior 1/3 of tongue - general sensation/taste
Middle ear/auditory tube - general sensation
Carotid n. - carotid sinus for blood pressure and carotid body for blood CO2

41
Q

Glossopharyngeal n. (IX) Autonomic Innervation

A

Parotid gland parasympathetics

42
Q

Frye’s Syndrome (cause and effect)

A

From laceration on lateral side of face - cuts auriculotemporal n. and postganglionic fibers go into skin instead of parotid gland so a person will sweat on side of face instead of salivating upon neural trigger

43
Q

Waldeyer’s Ring (4 components and purpose)

A

Pharyngeal, tubal, palatine, and lingual tonsils to sample any antigens coming in

44
Q

Adenoids

A

Enlarged pharyngeal/tubal tonsils

45
Q

Clinical Consideration of Blood Supply to Pharyngeal Region

A

LOTS of different vessels so lots of bleeding can occur w/ problems there

46
Q

Mechanism of Deglutition

A

Raise entire larynx up and epiglottis down so bolus passes by larynx