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The Digestive System
major
17
Anatomy
Undergraduate 1
04/21/2012

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Term
oral cavity
Definition
first portion of the alimentary canal that receives food and saliva. The oral mucosa is the mucous membrane epithelium lining the inside of the mouth.
Term
pharynx
Definition
is the part of the throat situated immediately posterior to (behind) the mouth and nasal cavity, and superior to the esophagus and larynx
Term
esophagus
Definition
is an organ in vertebrates which consists of a muscular tube through which food passes from the pharynx to the stomach.
Term
stomach
Definition
secretes protein-digesting enzymes and strong acids to aid in food digestion through smooth muscular contortions before sending partially digested food to the small intestine
Term
small intestine
Definition
is the part of the gastrointestinal tract following the stomach and followed by the large intestine, and is where much of the digestion and absorption of food takes place
Term
teeth
Definition
are small, calcified structures found in the jaws of that are used to break down food
Term
tongue
Definition
is a muscular hydrostat on the floors of the mouths which manipulates food for mastication
Term
salivary glands
Definition
exocrine glands that produce saliva, secrete amylase (breaks down starch into maltose)
Term
liver
Definition
has a wide range of functions, including detoxification, protein synthesis, and production of biochemicals necessary for digestion
Term
gall bladder
Definition
is a small organ that aids mainly in fat digestion and concentrates bile produced by the liver
Term
pancreas
Definition
an endocrine gland producing hormones, including insulin, glucagon, and somatostatin, and a digestive organ, secreting pancreatic juice containing digestive enzymes that assist the absorption of nutrients and the digestion in the small intestine.
Term
colon
Definition
is the last part of the digestive system that extracts water and salt from solid wastes before they are eliminated from the body, and is the site in fermentation of unabsorbed material occurs
Term
rectum
Definition
the last segment of the digestive tract, temporary storage area of fecal material
Term
hard palate
Definition
separates the oral cavity from the nasal cavity, formed by palatine processes of the maxillae and the palatine bones
Term
soft palate
Definition
separates the oral cavity from the nasopharynx, closes off the nasopharynx during swallowing, pharyngeal arches contains muscles involved in elevating the tongue, elevating the larynx, and depressing the soft palate
Term
esophagus
Definition
hollow muscular tube that transports foods and liquids from the oral cavity/pharynx to the stomach
Term
anus
Definition
the end of the anal canal
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