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41 Cards in this Set

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What are the two main parts of the digestive system, where food is digested?
1. Digestive tract- where food is prepared for digestion, gets digested, then absorbed
2. Digestive glands- which pour their secretions into the digestive tract to help in or contribute to the process of digestion
The digestive tract is made up of ?
oral cavity
pharynx
digestive tube
begins with esophagus and ends with anus.
The oral cavity is made up of?
lips cheeks
palate
tongue gums
teeth
Lip properties include
skin surface
mucous membrane surface
lip margin
labial glands
orbicularis oris muscle
Palate properties include
nasopharangeal surface
oral surface
palatine glands
palatine muscles
Lip substance is made up of?
The underlying CT contains mucous glands called
1.skeletal muscle fibers, mainly from obicularis oris muscle
2. labial glands, which lubricate the surface
Cheeks have same structure as lips, but the muscle forming the substance is called? What are the mucous glands called?
1.Buccinator muscle.
2. buccal glands
Palate forms roof of oral cavity, Its greater anterior portion is called?
Hard palate
The smaller posterior portion is made up of muscles and ligaments and is called the?
soft palate
The oral mucous membrane is lined with ?
stratified squamos epthelium non-keratinized
The nasal mucous membrane is lined with?
pseudostratified columnar cilitaed with some goblet cells.
the underlying CT of both mucous membranes contain small mucous and serous glands which are the?
Palatine glands, for lubrication
Tongue
muscular organ lying on the floor of mouth
Tongue skeletal muscle fiber runs in various directions, the fibers that run from tip to base are called?
Superior and inferior longitudinal groups
The muscle group that run between superior and inferior surfaces are called?
verticle group
the muscle group that runs from side to side are called the
transverse group
Between muscle fibers occur mucous and serous glands called______(1) the mucous membrane covering the inferior surface is smooth and lined with______(2)?
1.lingual glands
2. strat squamos non-kerat
the mucous membrane os superior surface is rough, divided into anterior 2/3 and posterior 1/3 by a V-shaped groove called?
1. sulcus terminalis
in the posterior 1/3, the CT is infiltrated by lymphatic tissue that constitutes the....
lingual tonsil
The anterior 2/3 mucous membrane presents elevations called__________(1). Name the 4 different types
1.lingual papillae
2. Filiform Papillae
fungiform papillae
circumvallate papillae
foliate papillae
Filiform papillae are _____(1) the papillae do not_________(2) and they function to_______(3)....
1. most numerous papillae
2. carry taste buds
3. impart roughness to superior surface of the tongue
Fungiform papillae are located mainly_______(1). The papillae carry_______(2)
1. tips and sides of the tongue
2. some taste buds
Circumvallate papillae are located_______(1) most of them sunken under the surface surrounded by a deep groove called the______(2)
1. parallel and anterior to sulcus terminalis
2. trench
the_______ are serous glands in the CT deep to the papillae, and their ducts open at the bottome on the trench
Von Ebners glands
Foliate papillae appear as transverse folds on_______(1)
they appear_______(2)
1.the sides of the tongue posteriorly
2. appear rectangular
Taste buds are found in mucous membrane of the tongue pharynx, palate and epiglottis. Name the three types of taste bud cells.
1.Neuroepithelial (taste) cells
2. Supporting (sustentacular) cells
3. Basal Cells
Neuroepithelial cells are elongated rod shaped cells with long microvilli called ______(1) that arise from free pole and project slightly through________(2). They are sensitive to_________(3)
1. hairlets
2. outer taste pore
3. taste stimuli
Supporting (sustentacular) cells. They ____ and ___ the more delicate taste cells.
support and protect
Basal Cells are small triangular cells at the basement membrane that are thought to be ____________
stem cells for the other two types.
Gums (or gingiva) is made up of _________?
stratified squamos epithelium
The teeth are made up of a _____(1) the exposed part, one or more_____(2) hidden in the alveolar sockets, and a ____ between crown and root.
1. crown (the exposed part)
2.roots
3. neck
Each root of a tooth has an_____ _____. through which vessels and nerves pass. Roots are attached to the bony sockets via a fibrous membrane called the ______ ______.(2)
1. apical foramen
2. periodontal membrane
the_____, forming the outer layer of the root, is closest to bone
cementum
the ____(1) forms most of root and part of crown, is harder and comtains about 72% ____ ____(2)
1. dentin
2. mineral salts
the ____(1) which represents a very thick crust over the crown, hard material made up of 97% ____ _____(2)
1. enamel
2. mineral salts
the ___ ____(1) and ___ ____(2) are filled with gelatinous material, the ____,(3) containing the blood vessels and nerves of the tooth
1. root canal
2. pulp cavity
3. pulp
Pharynx is a...
muscular tube that extends from mouth to esophagus.
the surface epithelium is ____ ____ ____(1) , except in the nasopharynx, where it is _____ ___ ___.
1. stratified squamos non-kera
2. pseudostrat columnar ciliated w/ some goblet cells
In the nasopharynx occurs infiltration of lymphoid tissue to constitute the ____ ____(1) or ______(2)
1. pharyngeal tonsil
2. adenoids
what is the extent of the pharynx?
base of skull to ivd C6-C7 (lower end of cricoid cartliage)
Mucosa is the _____ layer
Musculosa is the ____ layer
Adventitia is the ____ layer
1. mucous
2. muscle
3. fibrous