1absorption
passage of materials through the walls of the small intestine into the bloodstream
2amino acids
small building blocks of proteins (like links in a chain), released when proteins are digested
3amylase
enzyme secreted by the pancreas and salivary glands to digest starch
4anus
terminal end or opening of the digestive tract to the outside of the boy
5appendix
blind pouch hanging from the cecum (in the right lower quadrant)
6bile
digestive juice made in the liver and stored in the gallbladder, which breaks up large fat globules
7bilirubin
pigment released by the liver in the bile
9canine teeth
pointed, dog-like teeth next to the incisors
10cecum
first part of the large intestine
11colon
portion of the large intestine consisting of the ascending, transverse, descending, and sigmoid segments
12common bile duct
carries bile from the liver and gallbladder to the duedenum
13defecation
elimination of feces from the digestive tract through the anus
15dentin
primary material found in teeth, which is covered by the enamel in the crown and a protective layer of cementum in the root
16digestion
breakdown of complex foods to simpler forms
17duodenum
first part of the small intestine
18elimination
act of removal of materials from the body
19emulsification
physical process of breaking up large fat globules into smaller globules, thereby increasing the surface area that enzymes can use to digest the fat
20enamel
hard, outermost layer of a tooth
21enzyme
chemical that speeds up a reaction between substances
22esophagus
tube connecting the throat to the stomach
23fatty acids
substances produced when fats are digested
24feces
solid wastes; stool
25gallbladder
small sac under the liver; stores bile
27glycogen
starch; glucose is stored in the form of glycogen in liver cells
28hydrochloric acid
substance produced in the stomach; necessary for digestion of food
29ileum
third part of the small intestine
30incisor
any one of four front teeth in the dental arch
31insulin
hormone produced by the endocrine cells of the pancreas, which transports sugar from the blood into cells and stimulates glycogen formation by the liver
32jejunum
second part of the small intestine
33lipase
pancreatic enzyme necessary to digest fats
34liver
large organ that secretes bile; stores sugar, iron, and vitamins; produces blood proteins, destroys worn-out red blood cells; and filters out toxens
35lower esophageal sphincter (LES)
ring of muscles between the esophagus and the stomach
37molar teeth
sixth, seventh, and eighth teeth from the middle on either side of the dental arch
38palate
roof of the mouth
39pancreas
organ behind the stomach; produces insulin and enzymes
40papillae
small projections on the tongue
41parotid gland
salivary gland within the cheek
42peristalsis
rhythmic contractions of the tubular organs
44portal vein
large vein bringing blood to the liver from the intestines
45protease
enzyme that digests protein
46pulp
soft tissue within a tooth, containing nerves and blood vessels
47pyloric sphincter
ring of muscle at the end of the stomach
48pylorus
distal region of the stomach, opening to the duodenum
49rectum
last section of the large intestine, connecting the end of the colon and the anus
50rugae
ridges on the hard palate and the wall of the stomach
51saliva
digestive juice produced by salivary glands
52salivary glands
parotid, sublingual, and submandibular glands
53sigmoid colon
fourth and last, S-shaped segment of the colon
54sphincter
circular ring of muscle that constricts a passage or closes a natural opening
55stomach
muscular organ that receives food from the esophagus
56triglycerides
fat molecules composed of three parts fatty acids and one part glyceral
57uvula
soft tissue hanging from the middle of the soft palate
58villi
microscopic projections in the wall of the small intestine that absorb nutrients into the bloodstream