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MD2S3: Anatomy 203 > The Nose > Flashcards

The Nose Flashcards

1
Q

What structure separates the halves of the Nasal Cavity?

A

Nasal Septum

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2
Q

Openings of the nose

A

Anteriorly: Nostrils
Posteriorly: Into Nasopharynx through Choanae

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3
Q

Parts of External Structure of Nose

A

Bony Part
Cartilaginous Part

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4
Q

Components of Bony Part of Nose

A

Frontal Bone
Nasal Bone
Maxillary Bone

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5
Q

Components of Cartilaginous Part of Nose

A

Lateral Cartilage
Greater Alar Cartilage
Lesser Alar Cartilage

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6
Q

What is the Ethmoid Bone?

A

Unpaired Central Bone involved in formation of Orbit, Nasal Cavity, Nasal Septum and Floor of Anterior Cranial Fossa

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7
Q

Structure of Ethmoid Bone

A

Superiorly: Horizontal Cribiform Plate
Central: Median Perpendicular Plate
Medial Part of Lateral Wall: Ethmoidal Labyrinth
Lateral Part of Lateral Wall: Orbital Plate

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8
Q

What forms the Ethmoidal Labyrinth?

A

Conchae

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9
Q

Nasal Septum
Superior Parts

A

Perpendicular Plate of Ethmoid

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10
Q

Nasal Septum
Inferior and Posterior Parts

A

Vomer

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11
Q

Nasal Septum
Inferior and Anterior Parts

A

Septal Cartilage

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12
Q

What are the structures of the Lateral Wall of the Nose?

A

Vestibule of Nose
Atrium of Middle Meatus
Nasal Conchae and Meatuses

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13
Q

Lateral Wall: Vestibule
What is the Vestibule?

A

Region above nostril with skin and hairs

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14
Q

Lateral Wall: Vestibule
What limits the Vestibule?

A

Limen Nasi - Curved ridge above and behind Vestibule

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15
Q

Lateral Wall
What is the Atrium?

A

Depressed area above Vestibule and anterior to Middle Meatus

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16
Q

Lateral Wall: Nasal Conchae and Meatuses
Location

A

Behind Vestibule and Atrium

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17
Q

Lateral Wall: Nasal Conchae
What are Nasal Conchae?

A

Bony Elevations

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18
Q

Lateral Wall: Nasal Conchae
Names of Nasal Conchae

A

Superior Nasal Concha
Middle Nasal Concha
Inferior Nasal Concha

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19
Q

Lateral Wall: Nasal Meatuses
What is a Nasal Meatus?

A

Passage Inferior to each Concha

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20
Q

Lateral Wall: Nasal Meatuses
Names of Nasal Meatuses

A

Superior Meatus
Middle Meatus
Inferior Meatus

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21
Q

Lateral Wall: Nasal Meatuses
What is the Superior Meatus?

A

Short passage below Superior Concha

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22
Q

Lateral Wall: Nasal Meatuses
Superior Meatus receives the …

A

posterior ethmoidal air sinus

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23
Q

Lateral Wall: Nasal Meatuses
What is the Sphenoethmoidal Recess?

A

Space above Superior Concha
Receives opening of Sphenoidal Air Sinus

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24
Q

Lateral Wall: Nasal Meatuses
Components of the Middle Meatus

A

Hiatus Semilunaris
Bulla Ethmoidalis

25
Q

Lateral Wall: Nasal Meatuses
What is the Hiatus Semilunaris?

A

Deep Curved Groove

26
Q

Lateral Wall: Nasal Meatuses
Hiatus Semilunaris has the opening of the …

A

maxillary sinus

27
Q

Lateral Wall: Nasal Meatuses
Hiatus Semilunaris is continuous with the ____ anteriorly

A

curved ethmoidal infundibulum

28
Q

Lateral Wall: Nasal Meatuses
What openings does the Ethmoidal Infundibulum have?

A

Openings of Frontal Sinus and Anterior Ethmoidal Sinus

29
Q

Lateral Wall: Nasal Meatuses
What is the Bulla Ethmoidalis?

A

Bulge above Hiatus

30
Q

Lateral Wall: Nasal Meatuses
Bulla Ethmoidalis is produced by …

A

Middle Ethmoidal Sinus

31
Q

Lateral Wall: Nasal Meatuses
Inferior Meatus receives …

A

lower end of Nasolacrimal Duct

32
Q

Blood Supply of External Nose

A

Dorsal Nasal Artery
Angular Artery
Superior Labial Artery

All branches of Facial Artery

33
Q

What are the Quadrants of Blood Supply for the Lateral Nose?

A

Antero-Superior Quadrant
Antero-Inferior Quadrant
Postero-Superior Quadrant
Postero-Inferior Quadrant

34
Q

Lateral Nose Blood Supply
Pathway of Antero-Superior Quadrant blood supply

A

Internal Carotid Artery → Opthalmic Artery → Anterior and Posterior Ethmoidal Arteries

35
Q

Lateral Nose Blood Supply
Pathway of Antero-inferior Quadrant blood supply

A

External Carotid Artery → Maxillary Artery → Anterior Superior Alveolar Artery

36
Q

Lateral Nose Blood Supply
Pathway of Postero-Superior Quadrant Blood Supply

A

External Carotid Artery → Maxillary Artery → Sphenopalatine Artery

37
Q

Lateral Nose Blood Supply
Pathway of Postero-Inferior Quadrant Blood Supply

A

External Carotid Artery → Maxillary Artery → Greater Palatine Artery

38
Q

What are the divisions of blood supply of the Nasal Septum?

A

Antero-Superior Half
Postero-Inferior Half

39
Q

Nasal Septum Blood Supply
Antero-Superior Half

A

Septal Branch of Anterior Ethmoidal Artery
Septal Branch of Superior Labial Artery

40
Q

Nasal Septum Blood Supply
Postero-Inferior Half

A

Septal Branch of Spheno-Palatine Artery
Septal Branch of Greater Palatine Artery

41
Q

What is Little’s Area/Kiesselbach’s Plexus?

A

Anastomosis of Nasal Arteries in Anterior Nasal Septum

42
Q

Arteries of Little’s Area

A

Anterior Ethmoidal Artery
Sphenopalatine Artery
Greater Palatine Artery
Septal Branch of Superior Labial Artery

43
Q

Where is epistaxis in children usually from?

A

Little’s Area

44
Q

Describe the Venous Drainage of the Nasal Cavity

A

Veins form Venous Plexus below Mucous Membrane

45
Q

How is the Venous Plexus drained?

A

Anteriorly: Facial vein
Posteriorly: Pterygoid Venous Plexus

46
Q

Nerve Supply of External Nose

A

Infra Trochlear Nerve
External Nasal Nerve
Infraorbital Nerve

47
Q

Nerve Supply of External Nose
Pathway of Infra Trochlear Nerve

A

Trigeminal Nerve → Ophthalmic Nerve → Nasociliary Nerve → Infratrochlear Nerve

48
Q

Nerve Supply of External Nose
Pathway of External Nasal Nerve

A

Trigeminal Nerve → Ophthalmic Nerve → Nasociliary Nerve → External Nasal Nerve

49
Q

Nerve Supply of External Nose
Pathway of Infraorbital Nerve

A

Trigeminal Nerve → Maxillary Nerve → Infraorbital Nerve

50
Q

Nerve Supply of Lateral Wall
Pathway of Antero-Superior Quadrant

A

Trigeminal Nerve → Opthamic Nerve → Anterior Ethmoidal Nerve

51
Q

Nerve Supply of Lateral Wall
Pathway of Antero-Inferior Quadrant

A

Trigeminal Nerve → Maxillary Nerve → Anterior Superior Alveolar Nerve

52
Q

Nerve Supply of Lateral Wall
Postero-Superior Quadrant

A

Posterior Superior Lateral Nasal nerve

53
Q

Nerve Supply of Lateral Wall
Postero-Inferior Quadrant

A

Greater Palatine Nerve

54
Q

What are the Divisions of Nerve Supply of the Nasal Septum?

A

Antero-Superior Half
Postero-Inferior Half

55
Q

Nerve Supply of Nasal Septum
Antero-Superior Half pathway

A

Trigeminal Nerve → Opthalmic Nerve → Anterior Ethmoidal Nerve

56
Q

Nerve Supply of Nasal Septum
Postero-Inferior Half

A

Naso-Palatine Branch of Spheno-Palatine Ganglion

57
Q

Lymphatic Drainage of Anterior Half of Nasal Cavity

A

Submandibular Lymph Nodes

58
Q

Lymphatic Drainage of Posterior Half of Nasal Cavity

A

Retropharyngeal Lymph Nodes

MD2S3: Anatomy 203 (31 decks)

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