Body Planes & Oral Cavity Structures Flashcards
Anatomical Position
Standing erect, arms at sides, feet together, palms facing forward
Interproximal
Between two teeth
Dorsal
The top surface (of the tongue)
Ventral
The bottom surface (of the tongue)
Sagittal
a vertical (longitudinal) plane dividing the body into left and right sections
Midsagittal
A sagittal (vertical) plane diving the body into EQUAL right and left halves
Frontal/Coronal Plane
a vertical plane diving the body into front (anterior) and back (posterior) regions
Transverse Plane
a horizontal plane dividing the body into upper (superior) and lower (inferior) regions
Vestibule
space between lips/cheeks and teeth
Oral cavity proper
area surrounded by teeth or alveolar ridges back to palatine tonsils (includes region from floor of mouth upward to soft and hard palates)
Fordyce Granules
small, yellowish bumps on the inside surface of the cheeks (normal anatomy)
Linea alba
a white line or ridge that may be seen on the inside on the cheek (normal anatomy)
Parotid papilla
opening to Stensen’s duct, where parotid gland empties
Frenum
a thin fold of connective tissue that attaches the lips and cheeks to the mucosa of the maxilla and mandible (labial and buccal frenums)
Diastema
a space created between two teeth (most commonly between the maxillary central incisors)
Mucobuccal and Mucolabial fold
point where mucosa of the lips and cheeks turns toward the gingival tissue
mucobuccal-canine to canine
mucolabial- premolars
Alveolar Mucosa
movable mucosa lying against aveolar bone
Mucogingival junction
where alveolar mucosa becomes tightly attached to bone; beginning of gingiva
Exostoses
Bony potrusions on the buccal area
Palatine rugae
horizontal (transverse) ridges of epithelial and connective tissue in anterior hard palate, covered with keratinized epithelium