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Gross Anatomy > Head: Nasal Cavity > Flashcards

Head: Nasal Cavity Flashcards

1
Q

Bones of the nasal cavity

A
  • Frontal bone
  • Nasal bone
  • Frontal process of maxillary bone
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2
Q

Cartilages of nasal cavity

A
  • Lateral cartilages
  • Septal cartilages
  • Alar cartilages
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3
Q

Nasal septum separates

A
  • Separates left and right nasal cavity
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4
Q

Nasal septum is formed by

A
  • Septal cartilage
  • Perpendicular plate of ethmoid
  • Vomer
  • Nasal crests of maxilla and palatine bones
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5
Q

Olfactory region

A
  • Receptors for the sense of smell
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6
Q

Respiratory region

A
  • Warms and moistens air
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7
Q

Nasal vestibule

A
  • Dilated space inside nostrils lined with skin

- Contains vibrissae (hairs that fxn as filters)

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8
Q

Left and right nasal cavity boundaries

A
  • Roof: nasal, frontal, ethmoid, sphenoid bones
    Floor: palatine processes of maxilla, hzn plates of palatine bone
  • Medial Wall: nasal septum
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9
Q

Lateral wall of the nasal cavity

A
  • Maxilla
  • Ethmoid bone (superior and middle nasal conchae)
  • Perpendicular plate of palatine bone
  • Inferior nasal concha (conchae = turbinates)
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10
Q

Nasal conchae (lateral wall)

A
  • Superior and middle are part of ethmoid bone

- Inferior is an independent bone

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11
Q

Recesses of the lateral wall of the nasal cavity

A
  • Sphenoethmoidal recess
  • Super nasal meatus
  • Middle nasal meatus
  • Inferior nasal meatus
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12
Q

Sphenoethmoidal recess

A
  • Opening of sphenoidal sinus
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13
Q

Super nasal meatus

A
  • Opening of posterior ethmoidal sinuses
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14
Q

Middle nasal meatus contains

A
  • Ethmoidal bulla

- Semilunar hiatus

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15
Q

Ethmoidal bulla

A
  • Opening of middle ethmoidal sinuses
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16
Q

Semilunar hiatus

A
  • Opening of frontal, maxillary, and anterior ethmoidal sinuses
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17
Q

Inferior nasal meatus

A
  • Opening of nasolacrimal duct
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18
Q

Blood supply to nasal cavity comes from branches from

A
  • Ophthalmic
  • Maxillary
  • Facial arteries
19
Q

Anterior ethmoidal artery

A
  • Medial (septal) branch

- Lateral branch (to the lateral wall)

20
Q

Posterior ethmoidal artery

A
  • Medial (septal)

- Lateral branch (to the lateral wall)

21
Q

Sphenopalatine artery

A
  • Medial (septal) branch

- Lateral branch (to the lateral wall)

22
Q

Branches that supply nasal cavity

A
  • Anterior ethmoidal
  • Posterior ethmoidal
  • Sphenopalatine
  • Septal branches
  • Greater palatine
23
Q

Septal branches to nasal cavity come from

A
  • Facial artery (superior labial)
24
Q

Kiesselbach area

A
  • Arterial plexus formed by septal arteries
25
Q

Kiesselbach area contains

A
  • Sphenopalatine
  • Anterior ethmoidal
  • Superior labial
26
Q

Sphenopalatine artery is considered to be

A
  • The artery of epistaxis (nose bleeds)

- Kiesselbach’s area is where 90% occur

27
Q

Olfactory sensation

A
  • Sensation of smell
28
Q

Branches of ophthalmic (V1) and maxillary (V2) nerves in the nasal cavity provide

A
  • Somatic sensation

- Autonomics use V1 and V2 to reach glands in nasal cavity

29
Q

Nerves supplying the nasal cavity

A
  • Anterior ethmoidal nerve
  • Posterior ethmoidal nerve
  • Nasopalatine nerve
  • Posterior lateral nasal nerves
  • Infraorbital nerve
  • Infratrochlear nerve
30
Q

Anterior ethmoidal nerve supplies

A
  • Roof
  • Anterior septum
  • Lateral wall
  • External nasal branch
31
Q

Nasopalatine nerve supplies

A
  • Septum
32
Q

Posterior lateral nasal nerves supply

A
  • Septum
  • Lateral wall
  • Superior and inferior
33
Q

Infraorbital nerve supplies

A
  • Vestibule

- Alae

34
Q

Paranasal sinuses

A
  • Air-filled extensions of the respiratory tract

- Named by their location in the cranial bones

35
Q

Frontal sinuses

A
  • Drains through frontonasal duct into middle meatus (semilunar hiatus)
36
Q

Ethmoid sinuses (air cells)

A
  • Anterior
  • Middle
  • Posterior
37
Q

Anterior ethmoid sinus drains into

A
  • Drains into middle meatus (semilunar hiatus)
38
Q

Middle ethmoid sinus drains into

A
  • Drains into middle meatus (opening on ethmoid bulla)
39
Q

Posterior ethmoid sinus drains into

A
  • Drains into superior meatus
40
Q

Sphenoid sinuses

A
  • In the body of sphenoid bone

- Drain into spheno-ethmoidal recess

41
Q

Maxillary sinuses

A
  • Largest sinus
  • Floor of the orbit
  • Drains into middle meatus
42
Q

Innervation of sinuses

A
  • Branches of V1 and V2
43
Q

Blood supply of sinuses

A
  • Branches of ophthalmic and maxillary arteries

Gross Anatomy (50 decks)

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