1
Q

What are the 3 regions that the nasal cavity is divided into?

A
  • olfactory region
  • respiratory region
  • nasal vestibule
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2
Q

What is the nose split by?

A
  • nasal septum (cartilage)
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3
Q

What are choanae?

A
  • openings at the back of the nose
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4
Q

Label this image

A
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5
Q

What is the spheno-ethmoidal recess?

A
  • connection between the sphenoid bone and the ethmoid bone
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6
Q

What is the cell type found in the meatuses?

A
  • pseudo stratified ciliated columnar epithelium
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7
Q

Label this image

+ find sphenoethmoidal recess

A
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8
Q

Label this image

A
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9
Q

What are the 4 cartilages of the nose?

A
  • nasal septal (lateral and septal processes)
  • Major alar (medial and lateral crus)
  • Minor alar
  • Alar fibrofatty tissue
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10
Q

Which structures open into the three meatuses?

A
  • superior : posterior ethmoidal sinus
  • middle : frontal, maxillary and anterior ethmoidal sinuses
  • inferior : nasolacrimal duct, eustachian tube
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11
Q

What are the paired and unpaired bones that make up the nasal septum?

A
  • Paired bones: Nasal, maxillary and palatine bones.
  • Unpaired bones: Ethmoid and vomer bones.
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12
Q

What is the frontonasal duct?

A
  • connection between the frontal bone and nasal cavity
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13
Q

What does the frontonasal duct drain via?

A
  • the infundibulum between the superior and middle nasal concha
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14
Q

Label 1-25

A
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15
Q

What are the 6 ethmoidal structures?

A
  • Crista galli (attachment of the falx cerebri)
  • Cribriform plate (has all the olfactory nerves)
  • Perpendicular plate
  • Superior nasal concha
  • Middle nasal concha
  • Uncinate process
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16
Q

What is found on the lower part of the uncinate process?

A
  • opening into the maxillary sinus
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17
Q

Label this image

A
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18
Q

Where does the nasolacrimal canal open into?

A
  • inferior concha
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19
Q

Label this image

A
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20
Q

Label this image

A
21
Q

Where does the frontal sinus drain into?

A
  • ethmoidal
22
Q

What is the only way in and out of the maxillary sinus?

A
  • uncinate process
23
Q

If the maxillary sinus is inflamed then where can it caused pain?

A
  • referred pain along alveolar nerve
24
Q

What is the cell type of the lining of the sinuses?

A
  • pseudo stratified columnar epithelium
25
Q

What forms the medial walls of the orbits?

A
  • middle ethmoidal cells and the bulla ethmoidali
26
Q

What does the perpendicular plate attach to?

A
  • vomer bone
27
Q

Label this image

A
28
Q

What muscle causes frowning and where is it?

A
  • procerus
  • between orbits
29
Q

Where does the procerus attach?

A
  • onto the glabella
30
Q

Where does the nasalis muscle run?

A
  • over the nasal bone
31
Q

Label this image

A
32
Q

Where is the nasalis muscle attached and what does it surround?

A
  • attached to the maxilla
  • surrounds the fibrofatty cartilage of the naris
33
Q

What is the function of the levator muscle?

A
  • lift nose up (scrunch it/ addison rae)
34
Q

What is the torus tubaris?

A
  • opening of the auditory tube which connects the middle ear cavity to the back of the nasopharynx
35
Q

Label this image

A
36
Q

What is the limen nasi?

A
  • ridge after the nasal vestibule
37
Q

What is the semilunar hiatus?

A
  • space between the uncinate process and the ethmoid bulla
38
Q

Where does the nasolacrimal duct open?

A
  • inferior nasal meatus
39
Q

Label this image

A
40
Q

What is the foramen caecum and where is it found?

A
  • embryological remnant at the back of the tongue
41
Q

Where is the lingual tonsil?

A
  • at the back of the tongue
42
Q
A
43
Q

What is the ethmoid supplied by?

A
  • anterior and posterior ethmoidal arteries
44
Q

Where do the ethmoidal arteries originate?

A
  • branches of opthalmic which originate from the circle of willis
45
Q

What does the maxillary artery supply?

A
  • deep structures of the face, such as the mandible, maxilla, teeth, muscles of mastication, palate, nose
46
Q

What is the ophthalmic artery a branch of?

A
  • internal carotid
47
Q

What is Little’s area?

A
  • An area on the nasal septum where branches of facial, maxillary and ophthalmic arteries anastomose
  • common site of β€˜nose-bleeds’
48
Q
A