15.1-.6 vocab
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Created by:
MightyMinh on April 11, 2011
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37 terms
Terms | Definitions |
|---|---|
 aliment | food |
| chym | juice |
| decidu | falling off |
| gastr | stomach |
| hepat | liver |
| lingu | tongue |
| nutri | nourish |
| peri | around |
| pyl | gatekeeper |
| vill | hairy |
| digestion | is the mechanical and chemical breakdown of food and the absorption of the resulting nutrients by cells |
| digestive system | consists of the alimentary canal, and several accessory organs |
| peristalsis | propelling movements include a wavelike motion |
| mouth | receives food and begins digestion by mechanically reducing the size of solid particles and mixing them with saliva |
| cheeks | consist of outer layers of skin, pads of subcutaneous fat, muscles associated with expression and chewing, and inner linings of moist, stratified squamous epithelium |
| lips | are highly mobile structures that surround the mouth opening |
| tongue | nearly fills the oral cavity when the mouth is closed |
| frenulum | connects the midline of the tongue to the floor of the mouth |
| papillae | rough projections on the tongue surface provide friction, which helps handle food. |
| lingual tonsils | covered with round masses of lymphatic tissues |
| palate | forms the roof of the oral cavity and consists of a hard anterior part and a soft posterior part |
| uvula | the soft palate forms a muscular arch, which extends posteriorly and downward as a cone shaped projection |
| palatine tonsils | in the back of the mouth, on either side of teh tongue and closely associated with the palate, are masses of lymphatic tissue |
| pharyngeal tonsils | on the posterior wall of the pharynx, above the border of the soft palate |
| teeth | two different sets from during development |
| salivary glands | secrete saliva |
| amylase | watery fluid that contains the digestive enzyme |
| mucus | mucous cells secrete a thick liquid |
| nasopharynx | communicates with the nasal cavity and provides a passageway for air during breathing |
| oropharynx | is the passageway for food moving downward from the mouth and for food moving downward from the mouth and for air moving to and from teh nasal cavity |
| laryngopharynx | is a passageway to the esophagus |
| esophagus | a strait collapsible tube about 25 centimeter long, is a food passageway from the pharynx to the stomach |
| stomach | a J-shaped pouch like organ that hangs inferior to the diaphragm in the upper left portion of the abdominal cavity and has a capacity of about 1 liter or more |
| pylorix sphincter | is a valve that controls gastric emptying |
| gasteric juice | the product of the mucous cells, chief cells, and parietal cells together |
| pepsinogen | chief cells secrete pepsin as the inactive enzyme precursor |
| intrinsic factor | parietal cells secrete |
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