Anatomy and Physiology Flashcards
Farther away from a point
Distal
Toward the front (surface of the teeth)
Anterior
Toward the back (surface of the teeth)
Posterior
They are the smallest units in the human body. The structure of __is based on the function of that __.
Cells
primary tissue found in the human body
epithelial
primary tissue found in the human body
connective
primary tissue found in the human body
muscle
primary tissue found in the human body
nervous
They work together as a team to keep each body system functioning
Organs
Known as compact bone, is hard, dense, and strong
Cortical bone
also known as spongy bone, not as strong
Cancellous bone
a hinge joint that allows for jaw movement. It makes it possible for the lower jaw to move so that we can speak and chew
Temporomandibular joint (TMJ)
outside of the mouth
extraoral
(upper) teeth, soft palate
Maxillary
the specialized tissue that lines the inside of the mouth
mucous membrane
an opening bone through which blood vessels,nerves, and ligaments pass
Foramen
means pertaining to or directed toward the cheek (surface of the tooth)
buccal
Winglike tip on the outer side of each nostril
Ala of the nose
Cartilaginous projection anterior to the external opening of the ear.
Tragus of the ear
Also referred to as the mouth
Oral cavity
one of the body’s most versatile organs, is responsible for speech, positioning food while eating, tasting and tactile sensations, swallowing, and cleansing the oral cavity
Tongue
a narrow band of tissue that connects two structures
Frenum
produce saliva that lubricates and cleans the oral cavity and helps with digestion
Salivary glands
They serve as the roof of the mouth
Hard and soft palate
roof closer to the teeth
hard palate
the back of the roof
soft palate
an involuntary protective mechanism located in the posterior region of the mouth
Gag reflex
the alveolar bone made up of hard compact bone. It is the part of the mexilla
Alveolar process
the highest point of the alveolar ridge. In an unhealthy mouth, it can be destroyed
Alveolar crest
the space within the alveolar process in which the root of a tooth is held in place by the periodontal ligament
Alveolar socket
the mucous membrane lining inside your mouth
Oral mucosa
commonly referred to as the gums, is masticatory mucosa that covers the alveolar processes of the jaws and surrounds the necks of each tooth
Gingivae
refers to the natural teeth in the mouth
Dentition
How many teeth is there in a primary dentition?
20 teeth
the normal process by which primary teeth are shed. The root of the teeth is resorbed (removed by a normal body process)
Exfoliation
has some permanent and some primary teeth
Mixed Dentition
eruption of all 32 of the permanent teeth
Permanent Dentition
part of the skull, is fixed and not capable of movement
Maxillary arch
capable of movement
mandibular arch
two arches, each divided into halves, create four sections, which are called…
quadrants
identifies right and left
midline
identifies maxillary and mandibular
Occlusal plain
How many sextants are in each arch?
3
5 teeth/1-5
Maxillary right posterior sextant
6 teeth/6-11
Maxillary anterior sextant
5 teeth/12-16
Maxillary left posterior sextant
5 teeth/17-21
Mandibular left posterior sextant
6 teeth/22-27
Mandibular anterior sextant
5 teeth/28-32
Mandibular right posterior sextant
How many types of teeth are in the human dentition?
4
single-rooted, sharp and thin edge
Incisors
referred to as cuspids located at the “corner”, thick, with one pointed cusp. They have the longest root and are the most stable teeth
canines
known as bicuspids, broader chewing surface
Premolars
the largest teeth in the mouth, largest chewing surface
Molars
toward the front of the mouth, they are the incisors and canines
Anterior
toward the back of the mouth, they are the premolars and molars
posterior
the portion of the tooth covered with enamel. The size remains the same, throughout the life of the tooth, regardless of the position of the gingiva (also referred to as gums)
Anatomic crown
the portion of the tooth that is visible in the mouth. The length can vary during the life cycle of the tooth, depending on the location of the gingiva. position becomes longer as the surrounding gingiva recedes.
Clinical crown
lowers in position
recedes
the portion of the tooth that is normally embedded in the alveolar process and is covered with cementum. Depending on the type of tooth, one, two, or three roots may be present
root
placed in
embedded
the tapered end of each root tip is known as the
Apex
Anything that is located at the Apex is referred to as …
apical
narrow
tapered
the narrow area of the tooth where the crown and the root meet
Cervix
By how many tissues are teeth composed?
4 (enamel,dentin, cementum, and the pulp)
makes up the anatomic crown of the tooth, is the hardest material of the body. Is translucent and ranges in color from yellow-white to gray-white. Does not contain cells that can repair themselves, some remineralization is possible
Enamel
the substance allows some light to pass through it
Translucent
makes up the main portion of the tooth structure and extends the entire length of the tooth. In the permanent teeth, it is yellow and somewhat transparent. And the color tends to darken as we age
Dentin
caviries
decay
spongy
porous
microscopic canals
dentinal tubules
excessive drying
dehydration
sudden temperature changes
thermal shock
is the inner portion of the tooth. It is made up of connective tissue, blood vessels, and nerves
Pulp
the portion of the pulp that lies within the crown portion of the tooth is called__, it includes the pulp horns, which are extensions of the pulp that project toward the cusp tips and incisal edges
Coronal pulp
chamber
coronal
tips on the teeth
cusp tips
With increasing age, the pulp chamber becomes __.
smaller
Blood supply of derived from branches of the__.
Dental Arteries
The __ in the pulp receive and transmit pain stimuli.
nerves
protects the root of the tooth. It is more porous to help the periodontal ligaments attach to the tooth. If it becomes exposed because of gingival recession and bone loss, then it becomes sensitive and susceptible to decay.
Cementum
is located between alveolar process and cementum
periodontal ligaments
is dense connective tissue organized that connect the cementum covering the root of the tooth with the alveolar bone of the socket
Periodontal ligament
How many surfaces does each tooth has?
5
closest to the lips, surfaces closest to the cheeks are the buccal surfaces
facial surface
closest to the tongue
lingual surface
the chewing surface of anterior teeth
incisal surface
the chewing surface of posterior teeth
occlusal surface
surface closest to the midline
mesial surface
surface away from the midline
distal surface
the relationship between your maxillary teeth and mandibular teeth and how they come together when you bite down
Occlusion
raised areas
Cusps
approved by the American Dental Association (ADA), is used throughout the United states
Universal National System