Oral Cavity & Teeth

- Mouth cavity - Walls of mouth cavity - Teeth - Tongue - Salivary Glands

Lips - entrance to the oral cavity

- A soft tissue fold, continuing from posterior edge of the soft palate to the base of tongue - Form the boundaries of the isthmus of fauces - #7 in image

- The constricted aperture between the cavity of the mouth & the pharynx

- Roof of mouth - Bony foundation w/ contributions from Incisive, Maxilla & Palatine bones - Larger, rostral part of roof based on a body shelf formed of the palatine processes of the Incisive, Maxillary & Palatine bones

- Cheek Muscle (on the inside of the cheeks

- Cleft-like space between the cheek & the dental arches - On a closed mouth, it is the tiny space bordered caudally by the teeth, rostrally by the lips & laterally by the cheeks - A "vestibule" is an antechamber; small entrance hall or passage btwn the outer door & the interior of a house/building

- Contains striated muscles which tense & raise the soft palate during swallowing - The soft tissue constituting the back of the roof of the mouth - Distinguished from the Hard Palate at the front of mouth in that it doesn't contain bone

- Highly muscular organ that occupies the greater part of the oral cavity & extends into oropharynx - Consists of 3 parts: apex, body & root - Composed of striated muscle (of somatic origin)

- The unattached part of the tongue - Is free to roam both w/in & beyond the mouth - Shape is dorsoventrally compressed (flat)

- The middle, attached part of the tongue located between the apex part & root part of tongue - Attachment is to the symphysial region of the mandible - Crosssection is like an upsidedown triangle (being joined to the oral floor by a mucosal fold or frenulum)

- Most caudal part of the tongue - Attachment is to the hyoid bone - Shape is uniformly wide (i.e. has a rectangular cross section

1. Styloglossus muscle 2. Hyoglossus muscle 3. Genioglossus muscle 4. Geniohyoideus

To move the entire tongue on various directions

- Passes from the incisive part of the mandible to the body of hte hyoid bone - Lies below the tongue rather than w/in it - Able to draw the hyoid & thus the tongue forward - #1 in figure