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Neuro Block 3 > LAB Pharnyx > Flashcards

LAB Pharnyx Flashcards

0
Q

What innervates all of the pharynx muscles except the stylopharyngeus?

A

The vagus nerve

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1
Q

What muscle of the pharynx does the Glossopharyngeal (IX) nerve supply?

A

The stylopharyngeus

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2
Q

Where does the hypoglossal nerve exit the cranium and what does it innervate?

A

Exits through the hypoglossal canal and innervates the tongues

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3
Q

What does the sympathetic trunk carry and where do those neurons terminate?

A

Carries preganglionic neurons that terminate in the superior cervical ganglion.

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4
Q

What is the pharyngeal plexus and where is it located?

A

Formed by branches of IX and X

Found on the back of the pharynx

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5
Q

What structures pass through the jugular foramen?

A

The accessory nerve
Glossopharyngeal
Vagus nerve
Inferior petrosal sinus

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6
Q

What fascia is the sympathetic trunk found?

A

The prevertebral fascia

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7
Q

What supplies sensory information to much of the pharynx?

A

Glossopharyngeal nerve

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8
Q

What CNs are involved in the gag reflex and what limbs?

A

Afferent limb - CN IX

Efferent limb - CN X

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9
Q

Where do all the pharyngeal constrictor muscles insert?

A

Into a midline median raphe

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10
Q

What is the lowest part of the inferior pharyngeal constrictor called?

A

The cricopharngeus

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11
Q

What muscle is continuous with the buccinator and what divides the two?

A

The superior pharyngeal constrictor

Connected to the pterygomandibular raphe

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12
Q

Where does the stylopharyngeus take origin and what does it pass through to insert in the pharyngeal wall?

A

Takes origin on the styloid process

Passes between the superior and middle pharyngeal constrictors

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13
Q

What are the three pharynxes from rostal to caudal?

A

Nasopharynx - top of the brain to the soft palate
Oropharynx - soft palate to larynx
Laryngopharynx - larynx to the beginning of the esophagus

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14
Q

What fossa is located in the laryngopharynx?

A

The piriform fossa

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15
Q

What nerve perforated the thyrohyoid membrane to innervate the laryngeal mucosa above the vocal cords?

A

The internal branch of the superior laryngeal nerve

Sensory

16
Q

What recess is found in the nasopharynx?

A

The pharyngeal recess with the pharyngeal tonsils

17
Q

Where does the auditory tube open?

A

In the nasopharynx

18
Q

What is formed by cartilage of the auditory tube and the salpingopharyngeal muscle?

A

The tubal elevation or torus tubarius

19
Q

What is the fold of mucosa that overlies the cartilaginous part of the auditory tube and the salpingopharyngeus muscle?

A

The salpingopharyngeus fold

20
Q

What muscle originates from the cartilaginous tissue of the auditory tube, extends to the soft palate, and serves to elevate the palate during swallowing?

A

The levator veli palantini muscle

21
Q

What is the levator veli palatini innervated by?

A

The vagus nerve

22
Q

Where does the tensor veli palantini take origin and what does it do?

A

Takes origin on the pterygoid fossa between the medial and lateral pterygoid plates

Serves to tense the soft palate and open the auditory tube

23
Q

What is the tensor veli palantini innervated by?

A

The mandibular branch of the trigeminal nerve (V3)

24
Q

What arch extends from the soft palate and goes to the lateral wall of the pharynx?

A

The palatopharyngeal arch

25
Q

What arch extends from the soft palate to the tongue?

A

The palatoglossal arch

26
Q

What innervates the palatoglossal and palatopharyngeal muscles?

A

The vagus nerve

27
Q

Where do the motor neurons of the Glossopharyngeal nerve have their origin?

A

The nucleus ambiguus

28
Q

Where to the pre ganglionic neurons of the Glossopharyngeal nerve synapse?

A

The ganglia of the Glossopharyngeal nerve

29
Q

The Glossopharyngeal nerve is associated with which pharyngeal arch?

A

The 3rd

30
Q

What is the function of the vagus nerve?

A

Motor to the pharynx/larynx

Sensory (taste)

Sensory to the laryngeal region

31
Q

What pharyngeal arches is the vagus nerve associated with?

A

The 4th and 6th

Neuro Block 3 (17 decks)

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