Digestive System Flashcards
bilirubin
orange-yellow pigment formed during destruction of erythrocytes that is taken up by the liver to form bilirubin and eventually excreted in the feces
bolus
mass of masticated food ready to be swallowed
exocrine
gland that secretes its products through excretory ducts to the surface of an organ or tissue or into a vessel
sphincter
circular band of muscle fibers that constrict a passage or close a natural opening of the body
triglycerides
organic compound, a true fat that is made of one glycerol and three fatty acids. in the blood, triglycerides combine with proteins to form lipoproteins. the liver synthesizes lipoproteins to transport fats to other tissues, where they are a source of energy.
oral cavity
mouth
list the structures of the alimentary canal in order
mouth (oral cavity), pharynx, esophagus, lower esophageal (cardiac sphincter), stomach, pyloric sphincter, duodenum, jejunum, ileum, cecum, ascending, transverse, descending, sigmoid, rectum, anus
name the structures of the small intestine
duodenum, jejunum, ileum
name the structures of the upper GI tract
mouth, pharynx, esophagus, stomach
name the structures of the large intestine
cecum, ascending, transverse, descending, sigmoid, rectum (NOT anus)
mastication
chewing
enamel
outer layer of teeth
dentin
major component of teeth, deep to enamel
pulp
deepest layer of tooth, below dentin. contains nerves and blood vessels
gingiva
gums
deglutition
moving food to back of mouth for swallowing
papillae
rough projections on tongue that contain taste buds
epiglottis
small flap that closes over trachea during swallowing
where does most of the digestion in the stomach occur?
pylorus
rugae
microscopic folds w/i stomach lining that contain glands that secrete HCl and enzymes for digestion
chyme
semiliquid food that has been digested by HCL/enzymes and mechanical digestion in the stomach.
what valve separates the small and large intestines?
ileocecal valve
or/o
mouth
stomat/o
mouth
stomatitis
inflammation of the mouth
gloss/o
tongue
gloosectomy
removal of all or part of the tongue
ling/o
tongue
bucc/o
cheek
cheil/o
lip
cheiloplasty
surgical repair of a defective lip
labi/o
lip
dent/o
teeth
odont/o
teeth
orthodontist
orth (straight) odonto (teeth)
gingiv/o
gums
gingivectomy
excision of disease gingival tissue
sial/o
saliva
sialolith
calculus formed in a salivary gland or duct
esophag/o
esophagus
esophagoscop
instrument for examining the esophagus
pharyng/o
pharynx
pharyngotonsillitis
inflammation of the pharynx and tonsils
gastr/o
stomach
gastralgia
stomach pain
pylor/o
pylorus
pylorospasm
involuntary contraction of the pyloric sphincter of the stomach; as in pyloric stenosis
duoden/o
duodenum (first part of small intestine)
duodenoscopy
visual examination of the duodenum