Head and Neck (Midsagittal View) Flashcards
Four mucous Membrane lined sinuses (Paranasal Sinuses
- Frontal Sinus
- Sphenoid Sinus
- Ethmoidal
- Maxillary Sinuses
Paranasal sinuses
Unknown what they do
Connected to the nasal cavities by small apertures
Sella turcica
Of the sphenoid bone, houses the pituitary gland
Nasal Cavities
Lined with pseudostratified ciliated columnar Epithelium
Nasal Conchae
Three bony shell-shaped projections on each lateral wall
Nasopharynx
The upper most portion of the pharynx receives the bilateral openings
Above the soft palate
Lined with pseudostratified ciliated columnar epithelium
Eustachian Tubes
Pharyngotympanic Tubes
From the middle ear
Hard palate
Floor of nasal cavities and roof of the mouth
consists of four bones (two maxillary and two palatine bones
Merge in the midline during devo
Cleft Palate
Failure for bones of the hard palate to merge
Soft Palate
Floor of the nasopharynx
Muscluar tissue
flips up to cover the entry to the nasal cavity during swallowing
Oropharynx
Extends from the soft palate to the base of the tongue
Includes the palatine tonsils (Lymphatic tissue)
Lined with stratified squamaous epithelium
Hyoid Bone
U-shaped bone supports the tongue
Laryngopharynx
Lowest segment of the pharynx
Lined with stratified squamaous epithelium
Tolerates abrasion from swallowed food.
Larynx and remained of respiratory system
Pseudostratified ciliated columnar epithelium
True Vocal Cords
Extend btw the thryoid and cricoid cartilages vibrating to create sound
