Orofacial Anatomy Chapter 1-4 Study Guide |Latest Edition Complete Questions
with A+ Graded and Verified Answers 2026\2027
Where does the oral cavity begin and end:
Begins at the lips & cheeks and extends posteriorly to the area of palatine tonsils
Where do palatine tonsils lie:
On the sides of the throat between two folds of tissues, one in front and one in back
The digestive system shares what common pathway system between what two pharynx:
Respiratory; Oral and Laryngeal
What two parts are the oral cavity divided into:
1. Vestibule
2. Oral cavity proper
Vestibule:
The space between lips or cheeks and the teeth
Oral cavity proper:
Area surrounded by the teeth or alveolar ridges back to the palatine tonsils
What areas does the oral cavity proper include:
It includes the region from the floor of the mouth to the hard and soft palates
Lips:
The junction between skin of the face and mucosa of the oral cavity
Vermillion zone:
A transitional zone of reddish tissue between two areas that commonly encounter cold sores
Philtrum:
Indentation at the midline on skin of the upper lip, derived from the embryonic medial nasal
process
What makes up the vestibule anterior border:
The lips (labia)
What makes up the vestibular lateral border:
,The cheeks (buccal)
What makes up the vestibular posterior border:
The anterior border of the ramus of the mandible covered with soft tissue
How is the cheek formed:
Largely by buccinator muscle, covered with skin on the outside and mucous membrane on the
inside
Where does the buccinator muscle extend to and from:
From the back of the mouth corners of the mouth to join with muscles of the upper throat wall
Zygomaticoalveolar crest:
Ridge of bone at the upper posterior vestibular space; beginning of the anterior part of the
zygomatic arch
Mucobuccal or Mucolabial fold:
Mucosa of the lips or cheeks that turn towards the gingival tissue
Alveolar mucosa:
Movable mucosa lying against alveolar bone; generally reddish in color due to blood vessels
underneath thin mucosa
Mucogingival junction:
Where alveolar mucosa becomes tightly attached to bone; beginning of the gingiva
Why is the normal color of gingiva pink:
Because mucosal layer is thicker and blood vessels do not impart as much color
In patients with darker skin color, some pigmentation to the gingiva is:
Evident
Labial frenum:
Fold of connective tissue at the midline in upper and lower lips
The frenum contains no:
Muscle tissue
The frenum has only:
, Connective tissue
The upper frenum is more ____ than the lower, but problems may occur with either one:
Pronounced
Attachment of the ____ may extend to crest of the alveolar ridge or over it:
Maxillary frenum
Diastema:
When maxillary frenum is so firmly attached that erupting central incisors may be pushed
slightly aside, creating a space between them. (A GAP).
What is gingival recession caused by:
Mandibular labial frenum extending too close to gingiva and pulling downward on tissue
What age is the diastema procedure usually best done:
6 to 12 years old
Less well-defined frena:
Are evident in maxillary and mandibular canine areas at the area labeled mucobuccal fold, and
in a similar area above it in the maxillary arch
Coronoid process:
Part of the mandible that can be felt when the patient opens wide; located in the posterior-
superior part of the vestibule adjacent to the maxillary third molar area
Alveolar bone loss:
Can occur when teeth are lost
Bisecting angel technique:
The mouth open and the patient holding the film
Paralleling technique:
The mouth closed on a film-holding device
Mucosa:
Contains many small salivary glands
Fordyce granules:
with A+ Graded and Verified Answers 2026\2027
Where does the oral cavity begin and end:
Begins at the lips & cheeks and extends posteriorly to the area of palatine tonsils
Where do palatine tonsils lie:
On the sides of the throat between two folds of tissues, one in front and one in back
The digestive system shares what common pathway system between what two pharynx:
Respiratory; Oral and Laryngeal
What two parts are the oral cavity divided into:
1. Vestibule
2. Oral cavity proper
Vestibule:
The space between lips or cheeks and the teeth
Oral cavity proper:
Area surrounded by the teeth or alveolar ridges back to the palatine tonsils
What areas does the oral cavity proper include:
It includes the region from the floor of the mouth to the hard and soft palates
Lips:
The junction between skin of the face and mucosa of the oral cavity
Vermillion zone:
A transitional zone of reddish tissue between two areas that commonly encounter cold sores
Philtrum:
Indentation at the midline on skin of the upper lip, derived from the embryonic medial nasal
process
What makes up the vestibule anterior border:
The lips (labia)
What makes up the vestibular lateral border:
,The cheeks (buccal)
What makes up the vestibular posterior border:
The anterior border of the ramus of the mandible covered with soft tissue
How is the cheek formed:
Largely by buccinator muscle, covered with skin on the outside and mucous membrane on the
inside
Where does the buccinator muscle extend to and from:
From the back of the mouth corners of the mouth to join with muscles of the upper throat wall
Zygomaticoalveolar crest:
Ridge of bone at the upper posterior vestibular space; beginning of the anterior part of the
zygomatic arch
Mucobuccal or Mucolabial fold:
Mucosa of the lips or cheeks that turn towards the gingival tissue
Alveolar mucosa:
Movable mucosa lying against alveolar bone; generally reddish in color due to blood vessels
underneath thin mucosa
Mucogingival junction:
Where alveolar mucosa becomes tightly attached to bone; beginning of the gingiva
Why is the normal color of gingiva pink:
Because mucosal layer is thicker and blood vessels do not impart as much color
In patients with darker skin color, some pigmentation to the gingiva is:
Evident
Labial frenum:
Fold of connective tissue at the midline in upper and lower lips
The frenum contains no:
Muscle tissue
The frenum has only:
, Connective tissue
The upper frenum is more ____ than the lower, but problems may occur with either one:
Pronounced
Attachment of the ____ may extend to crest of the alveolar ridge or over it:
Maxillary frenum
Diastema:
When maxillary frenum is so firmly attached that erupting central incisors may be pushed
slightly aside, creating a space between them. (A GAP).
What is gingival recession caused by:
Mandibular labial frenum extending too close to gingiva and pulling downward on tissue
What age is the diastema procedure usually best done:
6 to 12 years old
Less well-defined frena:
Are evident in maxillary and mandibular canine areas at the area labeled mucobuccal fold, and
in a similar area above it in the maxillary arch
Coronoid process:
Part of the mandible that can be felt when the patient opens wide; located in the posterior-
superior part of the vestibule adjacent to the maxillary third molar area
Alveolar bone loss:
Can occur when teeth are lost
Bisecting angel technique:
The mouth open and the patient holding the film
Paralleling technique:
The mouth closed on a film-holding device
Mucosa:
Contains many small salivary glands
Fordyce granules:
