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AP Biology Chapter 41: Animal Nutrition

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143229403undernourishmenta diet that is chronically deficient in calories
143229404substrate feedersAn organism that lives in or on its food source, eating its way through the food
143229405deposit feedersDetritivores, also known as detritus feeders or saprophages, are heterotrophs that obtain nutrients by consuming detritus (decomposing organic matter)
143229406enzymatic hydrolysisThe process in digestion that splits macromolecules from food by the enzymatic addition of water.
143229407intracellular digestionthe breakdown of nutrients within a cell
143229408peristalisthe rhythmic contractions of muscles causing wavelike motions that move food down the GI tract
143229409pancreastriangular organ behind stomach that produces hormones that regulate blood sugar; produces enzymes that break down carbohydrates, proteins, lipids, and nucleic acids; and produces sodium bicarbonate, a base that neutralizes stomach acid
143229410salivary glandsthree pairs of exocrine glands in the mouth that secrete saliva; the parotid, submandibular (submaxillary), and sublingual glands
143229411gallbladderthe organ that stores bile after it is produced by the liver
143229412salivary amylasean enzyme that hydrolyzes starch and glycogen
143229413pharynxthroat; passageway for food to the esophagus and air to the larynx
143229414epiglottisa flap of cartilage that covers the windpipe while swallowing
143229415esophagusa muscular tube that connects the mouth to the stomach
143229416pepsinogenprecursor of pepsin
143229417acid chymethe result of the gastric juices and the food mixing into a nutrient broth
143229418pyloric sphincterthe sphincter muscle of the pylorus that separates the stomach from the duodenum
143229419small intestinethe longest part of the alimentary canal
143229420duodenumthe first part of the small intestine; between the stomach and the jejunum
143229421jejunummiddle portion of small intestine where chemical digestion ends and absorption begins
143229422liverorgan that makes bile to break down fats; also filters poisons and drugs out of the blood
143229423bilea digestive juice secreted by the liver and stored in the gallbladder
143229424trypsinan enzyme in pancreatic juice that breaks down large polypeptides
143229425dipeptidasesenzyme in small intestine that split small peptides
143229426carboxypeptidaseReleased by the pancreas into the small intestine, this enzyme hydrolyzes terminal peptide bond at the carboxyl end.
143229427aminopeptidaseEnzyme in small intestine that splits off one amino acid at a time from a polypeptide from the amine end.
143229428enteropeptidaseEnzyme in small intestine that directly or indirectly triggers activation of intestinal lumen enzymes
143229429emulsificationThe term for when bile salts from the gallbladder secreted into the duodenum coat tiny fat droplets and keep them from coalescing
143229430lactealThe small vessel of the lymphatic system that penetrates the core of each villus of the small intestine (absorbs digested fat)
143229431lipaseenzyme that hydrolyzes fat molecules
143229432villiTiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed
143229433chylomicronsfat droplets covered in protein that diffuse into capillaries in small intestine
143229434hepatic portal vesselcapillaries and veins that drain the nutrients away from the villi form the_____________ a blood vessel that goes to the liver
143229435gastrinpolypeptide hormone secreted by the mucous lining of the stomach
143229436enterogastroneshormones excreted by the duodenum wall that include secretin and cholecytokinin (CCK); signal buffering of chyme by the pancreas w/release of bicarbonate
143229437secretinA hormone secreted by the small intestine (duodenum) in response to low pH (e.g., from stomach acid). It promotes the release of bicarbonate from the pancreas to act as a buffer.
143229438large intestinecolon; organ that removes water from the undigested materials that pass through it
143229439cecuma pouch connected to the ascending colon of the large intestine and the ileum. *1st part of large intestine
143229440appendixA small, fingerlike extension of the vertebrate cecum; contains a mass of white blood cells that contribute to immunity.
143229441ruminantany of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments
143229442stomachlarge muscular sac that continues the mechanical and chemical digestion of food
143229443AA deficiency in this vitamin can cause blindness
143229444EA deficiency in this vitamin effects blood clotting.
143229445B6pyridoxine is also known as Vitamin ____
143229446A D E KList three of the four fat-soluble vitamins
143229447niacinThis vitamin is found in nuts, meats and grains and is a component of coenzymes NAD+ and NADP+

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