Shared Flashcard Set

Details

Digestive Organs
Digestive Organs
33
Anatomy
Not Applicable
10/27/2005

Additional Anatomy Flashcards

 


 

Cards

Term
Oral Cavity (1st chamber of the mouth)
Definition
chamber that extends from teeth/gums to pharynx
Term
Vestibule (2nd chamber of the mouth)
Definition
narrow space between teeth, cheeks and lips
Term
Mouth
Definition
Starting place for carb digestion; receives food and starts digestion by chewing 7 mixing with saliva; surrounded by cheeks, lips, tongue, and palate
Term
Palate
Definition
forms roof of oral cavity---------Anterior portion-hard palate----------Posterios portion- soft palate---------Extension of soft palate-uvula
Term
Palatine Tonsils
Definition
lymphatic tissue lateral to palate; protects body against infections
Term
Pharyngeal Tonsils (adenoids)
Definition
lymphatic tissue on posterior pharynx; protects body against infections
Term
Primary (deciduous) Teeth
Definition
number 20, erupt from 6-32 months, lost between 6-12 years
Term
Secondary (permanent) Teeth
Definition
push the primary teeth out of their sockets, number 32 (16 in each jaw), erupt from 6 yrs to adulthood
Term
Incisors
Definition
front teeth; chisel-shaped (4 central + 4 lateral), breaks food into bite-size pieces
Term
Cuspid
Definition
canine (eye) teeth; cone-shaped (4 total); grasp and tear food
Term
Bicuspids (premolars)
Definition
flattened surface; (first 4, second 4); grinding food particles
Term
Molars
Definition
flattened surface; (first 4, second 4, third 4); grinding food particles
Term
crown
Definition
exposed area of tooth
Term
Root
Definition
area below gum (gingiva)
Term
Enamel
Definition
covering on crown; Ca salts; hardest substance in body
Term
Dentin
Definition
bulk of tooth; substance similar to bone but harder
Term
Pulp Cavity
Definition
central cavity inside dentin
Term
Root Canals
Definition
located in pulp cavity with blood vessels and erves as well as connective tissue called pulp
Term
Cementum
Definition
thin layer of bonelike material enclosing the root, surrounded by periodontal ligament that attaches the tooth to the jaw
Term
Salivary Glands
Definition
secrete salive, function as lubrication, bind food together,********* begins chemical digestion of carbs ***********
Term
Enzyme salivary Amylase
Definition
breaks polysaccharides into disaccharides; starch to disaccharides and glycogen to disaccharides
Term
Parotid Salivary Glands
Definition
the largest salivary gland; lie between the skin of the cheek & the masseter muscle
Term
Submandibular Salivary Glands
Definition
floor of mouth; on the inside surface of the lower jaw
Term
Sublingual Salivary Glands
Definition
floor of mouth; inferior to the tongue
Term
2 Types of cells composing each salivary gland
Definition
mucous cells-secretes mucus that binds food together====================serous cells-secretes watery substance containing the digestive enzyme salivary amylase
Term
Pharynx
Definition
cavity posterior to the mouth that connects the nasal and oral cavities with the larynx and esophagus; no digestion occurs but important swallowing mechanism
Term
Nasopharynx
Definition
interconnected with nasal cavity; passageway for air during breathing; location of auditory tubes
Term
Oropharynx
Definition
passageway for food from the mouth and for air from the nasal cavity
Term
Laryngopharynx
Definition
located inferior to oropharynx; passageway to the esophagus
Term
First Stage of Swallowing Mechanism (Voluntary)
Definition
food is chewed & mixed with saliva; then tongue rolls this mixture into a mass called bolus at back of pharynx
Term
Second Stage of Swallowing Mechanism (Involuntary)
Definition
sensory receptors are stimulated and swallowing relfex is triggered, epiglottis closes over larynx, muscles in lower pharynx relax so esophagus opens, food is forced into esophagus
Term
Esophagus
Definition
passageway for food from pharynx to stomach, location:mediastinum behind traches, many mucous glands
Term
Movement of Food
Definition
gravity, peristaltic waves from esophagus meet lower esophageal sphincter, sphincter muscles relax, swallowed food moves into stomach
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