CODI 219 chpt 4 and 6

  • Skeletal Framework: Cranial Bones

    • TEMPORAL (two)

    • parietal (two)

    • Occipital (one)

    • Frontal (one)

    • Sphenoid )one)

    • Ethmoid (one)

    • Skeletal Framework: FACIAL BONES

    • Maxillary (two)


  • Palatine (two) l shape form back of floor of nasal cavity

    • Vomer (one)

    • Inferior nasal conochae (two) make up lower walls of nasal cavities

    • Lacrimal (two)

    • Nasal (two) form bridge of outer nose

    • Zygomatic (two) make up our cheek bones

    • MANDIBLE (one) moveable facial bone


Pharynx

  • continuous with ESOPHAGUS at lower end. (Oval SHAPE) made up of connective tissue at top and muscle tissue increases at bottom part of pharynx

Pharynx

THREE cavities

lower boundaries are level of hard palate (NASOPHARYNX), hyoid bone (OROPHARYNX), and base of the cricoid cartilage (LARYNGOPHARYNX)

nasopharynx contains the auditory tubes and nasopharyngeal tonsil. another name for nasopharynx is when abnormally long is abnormaloids

Oropharynx

- opening of oropharynx through faucial isthmus (bounded by anterior faucial pillars)

- oropharynx contains the palatine tonsils and lingual tonsil.

Velum

muscle fibers are most numerous in MIDDLE portion; scarce at front and back

velum means "curtains'

consists of the soft palate and uvula

covered with connective tissue

  • Nasal Cavities

- called nasal fossae

- two chambers separated by the nasal septum

- septum is cartilage at front. bone at back

- floor is hard palate


  • Nasal cavities

Nasal VESTIBULE at front

lateral walls are made up of conchae, which are curled and convoluted bones rich blood supply

  • Paranasal Sinuses

    • The sphenoid sinus is not shown in the figure and is located within the sphenoid bone.

  • Passive force

    • Recoil of muscles, cartilages, and connective tissues

- Surface tension