Oral Cavity Flashcards
Food is prepared for digestion, gets digested and absorbed in this area:
digestive tract
These pour their secretions into the digestive tract to help in or contribute to the process of digestion:
digestive glands
Made up of lips, cheeks, palate, tongue, gums, and teeth
oral cavity
Lip substance is made up of ______ muscle fibers, mainly from _____ ____ muscle.
Skeletal, orbicularis oris
These glands lubricate the surface of the lips:
labial glands
The muscle forming the substance in the cheeks is called the ______ muscle.
Buccinator
Mucous glands in the cheeks are called ____ glands.
Buccal
The _____ palate forms the anterior portion of the roof of the oral cavity, the ____ palate forms the posterior portion.
hard, soft
The oral mucous membrane is lined with:
stratified squamous non-keratinized epithelium
The nasal mucous membrane is line with:
pseudostratified columnar ciliated with goblet cells
Palatine glands are located where?
In the underlying C.T. of the oral and nasal mucous membranes.
A muscular organ lying on the floor of the mouth.
The toungue
These glands lie between the muscle layers of the tongue:
Lingual Glands
V-shaped groove in the tongue:
Sulcus Terminalis
This tonsil lies directly posterior to the sulcus terminalis:
Lingual tonsil
Most numerous papillae, covering most of the superior surface. Conical in shape with a pointed end that may bifurcate. They do NOT carry taste buds. Function to impart roughness.
Filiform papillae
This papillae are located at the tips and sides of the tongue. They carry some taste buds.
Fungiform
These papillae are the least in number (10-14) located parallel and anterior to the sulcus terminalis. Surrounded by a deep groove called the trench. Von Ebner’s glands are located deep to these papillae.
Circumvallate
These papillae appear as transverse folds on the sides of the tongue posteriorly. They appear rectangular.
Foliate papillae
Neuroepithelial areas found in the mucous membrane of the tongue, pharynx, palate and epiglottis.
Taste buds
These lie mainly in the center and are elongated rod-shaped cells with long microvilli called hairletssensitive to taste stimuli
Neuroepithelial (taste) cells:
Large crescent-like cells mostly at periphery. They support and protectthe more delicate taste cells.
Supporting (Sustentacular) cells:
Small triangular cells at basement membrane that are thought to be stem cells for other two types.
Basal cells
The roots of teeth are attached to the bony sockets via a fibrous membrane called the:
periodontal membrane
Forms the outer layer of the tooth root, and is closest to bone.
cementum
Forms most of the root and part of the crown, is harder and contains about 72% mineral salts.
dentin
Represents a very thick crust over the crown, is a very hard material made up 97% of mineral salts.
enamel
Contains the blood vessels and nerves of the tooth.
pulp
This is a muscular tube that extends from mouth to esophagus. It is made up of three parts: The nasopharynx, oropharynx and laryngopharynx.
Pharynx
The surface epithelium of that membrane in the nasopharynx is:
pseudostratified columnar ciliated with some goblet cells
The underlying C.T. contains sero-mucous glands, and in the nasopharynx there occurs infiltration of lymphoid tissue to constitute the:
pharyngeal tonsilor adenoids
Pharynx extends from:
Base of the skull to the IVD of C6-C7
Adventitia is a:
Fibrous layer
musculosa is a:
muscle layer
paralysis is:
paralysis of palatine muscles
