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Anatomy > The Pharynx > Flashcards

The Pharynx Flashcards

1
Q

What are the divisions of the pharynx cavity?

A

Nasopharynx, oropharynx, and laryngopharynx (hypopharynx)

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2
Q

From what levels does the pharynx extend?

A

From the base of the skull to C6

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3
Q

What structure begins when the pharynx ends at C6?

A

The esophagus

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4
Q

What two divisions of the pharynx remain open for breathing?

A

nasopharynx and oropharynx

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5
Q

What muscles contract to shut off the nasopharynx during swallowing?

A

Pharyngeal muscles

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6
Q

What is the nerve supply to the pharynx and where does it receive its contributions?

A

Pharyngeal Plexus

  1. GSA fibers from CN 9
  2. GVE Parasympathetic fiber from CN 10
  3. GVE Sympathetic fibers from Cervical Sympathetic Ganglia
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7
Q

The posterior wall of the nasopharynx lies against the ________ part of the occipital bone where the _________ tubercle is located.

A

Basilar; pharyngeal

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8
Q

What structure lies within the mucosa against the occipital bone which can make breathing through the nose difficult if it is infected?

A

Pharyngeal Tonsil

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9
Q

What are the entrances from the nasal cavities into the pharynx called?

A

Choanae

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10
Q

The _______ is an elevation where the mucosa covers the cartilaginous portion of the _________ (structure) as it penetrates through the pharyngobasilar facia.

A

Torus tuberius; auditory tube

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11
Q

What fold extends inferiorly from the posterior border of the torus tubarius?

A

Salpingopharyngeal Fold

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12
Q

What muscle does the salpingopharyngeal fold overlap?

A

Salpingopharyngus Muscle

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13
Q

What deep space is located at the superior end of the nasopharynx, just posterior to the torus?

A

Pharyngeal Recess

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14
Q

Where does the nasopharynx extend?

A

From base of skull to palate

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15
Q

Where does the oropharynx extend?

A

From the palate to the level of the hyoid bone

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16
Q

What 2 systems cross at the oropharynx?

A

Digestive and Respiratory

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17
Q

The (anterior/posterior) extent of the oropharynx is also the (anterior/posterior) limit of the oral cavity

A

anterior; posterior

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18
Q

Where is the junction between the oropharynx and oral cavity located and what is it called?

A

At the tonsillar pillars

Called the palatoglossal fold

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19
Q

What muscles do the tonsillar pillars cover and where are they in relation to the tonsil?

A

Palatoglossus muscle anterior to tonsil

Palatopharyngeus muscle posterior to tonsil

20
Q

What structure lies between the tonsillar pillars that is important to the immune system?

A

Palatine Tonsil

21
Q

What fold covers the palatopharyngeus muscle?

A

Palatopharyngeal fold

22
Q

What fold spans between the palatopharyngeal fold and the epiglottis?

A

Pharyngoepiglottic fold

23
Q

What muscle attaches to the superior border of the thyroid cartilage deep to the pharyngoepiglottic fold?

A

Stylopharyngeus Muscle

24
Q

The laryngopharynx lies posterior to where?

A

The laryngeal inlet and larynx

25
Q

The ______ are relatively deep pockets that lie on either side of the _________ (structure).

A

Piriform recesses; cricoid cartilage

26
Q

What branches compose the pharyngeal plexus?

A

CN 9, 10, and postganglionic sympathetic fibers of superior cervical ganglion

27
Q

(T/F) 9th, 10th, and 11th CN have superior and inferior ganglia.

A

False. Only the 9th and 10th.

28
Q

What is the first branch of CN 9?

A

Tympanic nerve

29
Q

What fibers does the tympanic nerve contain?

A

Preganglionic parasympathetic motor fibers and sensory fibers

30
Q

Where does the Tympanic nerve re-enter the skull?

A

Tympanic Canaliculus

31
Q

From what structures does the Tympanic Nerve return information from?

A

The tympanic cavity, auditory tube, and the mastoid air cells

32
Q

What does the next branch of CN 9 innervate?

A

Stylopharyngeus Muscle

33
Q

Where does the stylopharyngeus muscle originate?

A

From the 3rd pharyngeal arch

34
Q

What nerve fibers make up CN 9 fibers innervating the stylopharyngeus muscle?

A

BE (branchiomeric motor)

35
Q

Where does the main trunk of CN 9 continue after the stylopharyngeus muscle?

A

The Tongue

36
Q

What path does CN 9 take to enter the tongue?

A

Through gap b/t superior and middle constrictor muscles and deep to hyoglossus muscle

37
Q

Sensory branches from CN 9 contain tastes sensation from what part of the tone?

A

Posterior 1/3 (SA fibers)

38
Q

Where does the general somatic sensation input come from in the tongue from CN 9?

A

Posterior 1/3 of tongue and tonsillar bed

39
Q

The superior part of the nasopharynx also gets overlapping sensory nerve supply from branches of what?

A

V2 of CN5

40
Q

Where does the sensory information from the laryngopharynx come from?

A

The vagus nerve

41
Q

What body contains chemoreceptors for O2, CO2, pH, and temperature?

A

Carotid Body

42
Q

What is the area that is at the bifurcation of the common carotid artery into the internal and external carotids?

A

Carotid Sinus

43
Q

What does the carotid sinus contain?

A

Baroreceptors

44
Q

Where is the pharyngeal nerve plexus formed?

A

On the middle constrictor near the greater horn of the hyoid bone

45
Q

What fibers of the pharyngeal nerve plexus are vasomotor?

A

Sympathetic fibers

46
Q

What part of the pharynx receives sensory fibers of glossopharyngeal nerve?

A

Upper 2/3rds of the pharynx

Anatomy (9 decks)

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