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Cranial Nerves > 29/4/21 > Flashcards

29/4/21 Flashcards

1
Q

Where does the sphenoidal sinus drain into?

A

Sphenoethmoidal recess in superior meatus

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2
Q

What are the 4 paranasal sinuses?

A

Frontal, sphenoidal, maxillary and ethmoidal

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3
Q

What is the purpose of the paranasal sinuses?

A

Lower weight of skull, sound resonance, air humidification, adjust temp

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4
Q

What is the purpose of the superior middle and inferior meatus?

A

Increase surface area, humidify air and trap pathogens

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5
Q

Where does the ethmoidal sinus drain into

A

Middle meatus

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6
Q

Where does the frontal sinus drain into

A

Middle meatus

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7
Q

Where does the maxillary sinus drain into

A

Middle meatus

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8
Q

Describe the innervation of the anterior 2/3 of tongue

A

General sensation: mandibular branch of trigeminal nerve

Special sensation: chorda tympani (CN7 branch)

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9
Q

Describe the innervation of the posterior 1/3 of tongue

A

Special and general sensation: glossopharyngeal

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10
Q

How do you distinguish between the anterior 2/3 of tongue and posterior 1/3?

A

Circum vallate papillae

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11
Q

What 2 bumps are found on the anterior 2/3 of tongue?

A

Fungiform and filliform

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12
Q

Boundaries of the nasopharynx

A

Base of skull to hard palate

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13
Q

Boundaries of the oropharynx

A

Hard palate to hyoid bone

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14
Q

Boundaries of the laryngopharynx

A

Hyoid bone to C6

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15
Q

Where does the oesophagus start

A

C6

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16
Q

Surface marker for apex of heart

A

Subclavicular line 5th intercostal space

17
Q

What is the triangular opening between true vocal chords called?

A

Rima glottidis

18
Q

What is the triangular opening between false vocal chords called?

A

Rima vestibuli

19
Q

What is the only elastic cartilage in the pharynx

A

Epiglottis

20
Q

What are the unpaired cartilages of the larynx?

A

Epiglottis, thyroid, cricoid

21
Q

What are the paired cartilages in the larynx

A

Cuneiform, corniculate, arytenoid

22
Q

What’s the innervation of the cricothyroid muscle?

A

External branch of the superior laryngeal nerve( branch of vagus)

23
Q

What is the innervation of all but 5 laryn muscles

A

Recurrent laryngeal nerve

24
Q

What are the 2 main muscles in the middle ear and what are they supplied by?

A

Stapedius: chords tympani

Tensor tympani: v3

25
Q

What kind of fubres are found in the corpus callosum and why

A

Commissars fibres to allow the hemispheres to communicate

26
Q

What is the purpose of the hippocampus

A

Long term memory

27
Q

What is the purpose of the mammillary bodies

A

Collective memory

28
Q

Describe the papez circuit

A

Hippocampus, fimbria, cura of fornix, body of fornix, commissars of fornix, column of fornix, mammillary body, thalamus, cingulate gurus, hippocampus

Cranial Nerves (2 decks)

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