Chapter 12 Spelling words Flashcards
(196 cards)
gastrointestinal tract
another name for the digestive system or alimentary canal
digestive tract
another name for the digestive system or alimentary canal
alimentary canal
- another name for the digestive tract, digestive track , and gastrointestinal tract
- musculomembranous tube, about 30 feet, extending from the mouth to the anus and lined with mucous membrane
gastroenterologist
-a physician who specializes in the study of diseases affecting the gastrointestinal tract (including stomach, intestines, gallbladder, and bile duct)
gastr/o=stomach enter/o=small intestine -logist=one whoe specializes in the study of
nutritionist
-an allied professional who studies and applies the principles and science of nutrition
rugae
- irregular ridges or folds in mucous membrane lining of the hard palate
- they are also found in the stomach which allows the stomach to expand
uvula
- a small, cone-shaped projection where the soft palate ends
- aids in the digestive track
- helps in producing sounds and speech
mastication
-chewing, tearing or grinding food with the teeth while it becomes mixed with saliva
deglutition
swallowing
papillae
- small, rough elevations on the tongue
- contain the taste buds that detect sweet, sour, salty, and bitter tastes of food or beverages
amylase
-an enzyme that aids in the digestion of carbohydrates by breaking them down into smaller carb molecules
amyl/o=starch -ase=enzyme
lipase
-an enzyme that aids in the digestion of fats
salivary glands
- part of the accessory structures of the digestive tract
- 3 pairs=the parotids, the submandibulars, and the sublinguals
- secretes most of the saliva produced each day through ducts
saliva
- water and mucous and digestive enzymes
- softens food and begins the digestion of food
gingiva
- a gum
- gum tissue
- plural=gingivae
pharynx
- the throat
- passageway for both the respiratory and digestive systems
- 3 parts= the nasopharynx, the oropharynx, and the laryngopharynx
oropharynx
-the portion of the pharynx leading away from the oral cavity
esophagus
- receives food from the pharynx and propels it on to the stomach
- muscular tube, 10” long, passes through an opening in the diaphragm and connects to the stomach
cardiac sphincter
-the muscular ring that controls the passage of food from the esophagus into the stomach
-also known as the lower esophageal sphincter (LES)
-when it relaxes—it opens to allow food
-when it contracts—it closes and prevents stomach content from going back into the esophagus
cardi/o=heart -ac=pertaining to
stomach
- in ULQ and have 3 major divisions=the fundus, the body, and the pylorus
- gastric juices found in the folds chemically break down foods
- muscular action causes churning which mixes the food with the secretions to create chyme
duodenum
-the first part of the small intestines
-also referred to as the gastric antrum
-apppr. 12” long
-receives chyme from the pylorus, secretions from the liver and pancreas
-the shortest, widest and most fixed portion of the small intestine
duoden/o=duodenum -um=noun ending
pyloric sphincter
- regulates the passage of the food from the stomach into the duodenum
- releases chyme in small amounts into the small intestine
chyme
-a liquid-like mixture of partially digested food and digestive secretions in the stomach just before it is released into the duodenum
jejunum
- connects the duodenum to the illeum
- appr. 8ft long