Download KUMC 31 Nasal Cavity Student

NASAL CAVITY
Skeletal Framework

Parts:
Alae.
Dorsum.
Bridge.

Skeletal components:
Nasal bones.
Frontal process of maxillary.
Nasal part of frontal bone.
Skeletal Framework

Cartilages:
Septal.
Lateral.
Alar.
Mucous Membranes

Sensory innervation:
Anterior ethmoidal nerves.
Nasopalatine nerves.
Mucous Membranes

Motor:
Parasympathetics:
Via CN VII.
To:
Pterygopalatine ganglion.
To:
Mucous glands:
Via branches of maxillary nerve.
Mucous Membranes

Motor:
Sympathetics:
To:
Blood vessels.
From:
Superior cervical ganglion.
Via:
Maxillary nerve.
Paranasal Sinuses

Maxillary:
Largest.
Present at birth.
Opens to:
Middle meatus.
Via semilunar hiatus.
Nerve supply:
Superior alveolar nerve.
Infraorbital nerves.
Paranasal Sinuses

Frontal:
Paired.
Opens to:
Middle meatus.
Via frontonasal duct.
Nerve supply:
Supratrochlear nerves.
Supraorbital nerves.
Paranasal Sinuses

Sphenoidal:
Paired.
Opens to:
Nasal cavity.
Via sphenoethmoidal recess.
Nerve supply:
Maxillary nerves.
Ethmoidal nerves.
Paranasal Sinuses

Ethmoidal:
Group of ethmoidal air cells.
Anterior and middle cells:
Open into middle meatus.
Posterior air cells:
Open into superior meatus.
Nasopharynx
From base of skull to soft palate.
 Pharyngeal tonsils:

Embedded in posterior wall.
Enlarged = adenoids.
Nasopharynx

Salpingopharyngeal fold (muscle):
Created by named muscle.
Muscle extends from auditory tube cartilage
to palatopharyngeus muscle.

Opening for:
Eustachian tube.
Torus tubarius.