Head: Nasal Cavity

Question 1

Bones of the nasal cavity

Answer 1

• Frontal bone
• Nasal bone
• Frontal process of maxillary bone

Question 2

Cartilages of nasal cavity

Answer 2

• Lateral cartilages
• Septal cartilages
• Alar cartilages

Question 3

Nasal septum separates

Answer 3

• Separates left and right nasal cavity

Question 4

Nasal septum is formed by

Answer 4

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

Question 5

Olfactory region

Answer 5

• Receptors for the sense of smell

Question 6

Respiratory region

Answer 6

• Warms and moistens air

Question 7

Nasal vestibule

Answer 7

• Dilated space inside nostrils lined with skin

- Contains vibrissae (hairs that fxn as filters)

Question 8

Left and right nasal cavity boundaries

Answer 8

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

Question 9

Lateral wall of the nasal cavity

Answer 9

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

Question 10

Nasal conchae (lateral wall)

Answer 10

• Superior and middle are part of ethmoid bone

- Inferior is an independent bone

Question 11

Recesses of the lateral wall of the nasal cavity

Answer 11

• Sphenoethmoidal recess
• Super nasal meatus
• Middle nasal meatus
• Inferior nasal meatus

Question 12

Sphenoethmoidal recess

Answer 12

• Opening of sphenoidal sinus

Question 13

Super nasal meatus

Answer 13

• Opening of posterior ethmoidal sinuses

Question 14

Middle nasal meatus contains

Answer 14

• Ethmoidal bulla

- Semilunar hiatus

Question 15

Ethmoidal bulla

Answer 15

• Opening of middle ethmoidal sinuses

Question 16

Semilunar hiatus

Answer 16

• Opening of frontal, maxillary, and anterior ethmoidal sinuses

Question 17

Inferior nasal meatus

Answer 17

• Opening of nasolacrimal duct

Question 18

Blood supply to nasal cavity comes from branches from

Answer 18

• Ophthalmic
• Maxillary
• Facial arteries

Question 19

Anterior ethmoidal artery

Answer 19

• Medial (septal) branch

- Lateral branch (to the lateral wall)

Question 20

Posterior ethmoidal artery

Answer 20

• Medial (septal)

- Lateral branch (to the lateral wall)

Question 21

Sphenopalatine artery

Answer 21

• Medial (septal) branch

- Lateral branch (to the lateral wall)

Question 22

Branches that supply nasal cavity

Answer 22

• Anterior ethmoidal
• Posterior ethmoidal
• Sphenopalatine
• Septal branches
• Greater palatine

Question 23

Septal branches to nasal cavity come from

Answer 23

• Facial artery (superior labial)

Question 24

Kiesselbach area

Answer 24

• Arterial plexus formed by septal arteries

Question 25

Kiesselbach area contains

Answer 25

- Sphenopalatine - Anterior ethmoidal - Superior labial

Question 26

Sphenopalatine artery is considered to be

Answer 26

- The artery of epistaxis (nose bleeds) | - Kiesselbach’s area is where 90% occur

Question 27

Olfactory sensation

Answer 27

- Sensation of smell

Question 28

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

Answer 28

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

Question 29

Nerves supplying the nasal cavity

Answer 29

- Anterior ethmoidal nerve - Posterior ethmoidal nerve - Nasopalatine nerve - Posterior lateral nasal nerves - Infraorbital nerve - Infratrochlear nerve

Question 30

Anterior ethmoidal nerve supplies

Answer 30

- Roof - Anterior septum - Lateral wall - External nasal branch

Question 31

Nasopalatine nerve supplies

Answer 31

- Septum

Question 32

Posterior lateral nasal nerves supply

Answer 32

- Septum - Lateral wall - Superior and inferior

Question 33

Infraorbital nerve supplies

Answer 33

- Vestibule | - Alae

Question 34

Paranasal sinuses

Answer 34

- Air-filled extensions of the respiratory tract | - Named by their location in the cranial bones

Question 35

Frontal sinuses

Answer 35

- Drains through frontonasal duct into middle meatus (semilunar hiatus)

Question 36

Ethmoid sinuses (air cells)

Answer 36

- Anterior - Middle - Posterior

Question 37

Anterior ethmoid sinus drains into

Answer 37

- Drains into middle meatus (semilunar hiatus)

Question 38

Middle ethmoid sinus drains into

Answer 38

- Drains into middle meatus (opening on ethmoid bulla)

Question 39

Posterior ethmoid sinus drains into

Answer 39

- Drains into superior meatus

Question 40

Sphenoid sinuses

Answer 40

- In the body of sphenoid bone | - Drain into spheno-ethmoidal recess

Question 41

Maxillary sinuses

Answer 41

- Largest sinus - Floor of the orbit - Drains into middle meatus

Question 42

Innervation of sinuses

Answer 42

- Branches of V1 and V2

Question 43

Blood supply of sinuses

Answer 43

- Branches of ophthalmic and maxillary arteries