Flashcards
Digestive System
Flashcards do conjunto (16)
- 1Overview5-6m long
-GUT: Hollow tube open at both ends (mouth and anus)
-GASTROINTESTINAL TRACT: oral cavity, pharynx, esophagus, stomach, small intestine & large intestine.
-ACCESSORY STRUCTURES: teeth, tongue, salivary glands, pancreas, liver, gallbladder - 2NutritionMetabolic process that allows organisms to obtain energy
- 3Extrecellular DigestionMechanic
&
Chemical - 4Cellular DigestionIt occurs in animals lacking digestive system
- 5Buccal Cavity~Mechanical digestion begings by chewing
~The salivary glands secrete amylase beginning with carbohydrate metabolism
~The bolus formed is swallowed & passes through the pharynx
~Taste transduction signals for proper digestion - 6Mucosa's componentsPermeable coating epithelium
LAMINA PROPRIA: glands, blood vessels, lymphatic tissue
MUSCLE TISSUE: smooth muscle cells - 7Mucosa's FunctionsProtection
Absortion
Secretion - 8StomachWhere metabolism of proteins begins
Covered by epithelial tissue
Parts: cardia, fudus, body, pylovus, antrum - 9Stomach-Muscular cavity where peristalsis begins
-Pepsin & hydrochloric acid are secretedin from the stomach wall
-It's lined by gladuñar epithelial tissue
-It's between 1000 & 1500cm^3 capacity - 10Small IntestineCoiled tube of 2.5 cm diameter & 6 m long
Intestinal villi is located in epithelial cells of the intestine - 11Small Intestine Beginning & EndBegins in the duodenum in the final part of the stomach
Ends at the ileocecal junction where the large intestine stars - 12Small Intestine FunctionDigestion & absorption of food
- 13Intestine wall conssts of 3 layersMuscularis mucosa
Lamina
A third layer in the interior or lumen of the small intestine - 14Liver-Organ & the largest gland in the human body
-Remove harmful substances from blood
-Secretes bile (helps digest food, filter harmful chemicals) - 15PancreasGlandular organ that produces endocrine and exocrine secretions
Endocrine function: insulin & glocagon
Exocrine function: pancreatic juice comprises amylase, lipase, trypsin, chymotrypsin, carboxypeptidases & nucleases (metabolizan) - 16Large IntestineAbsorptive function: water & electrolytes (chief fuction of colon)
Secretory function
Synthesis function
Storage function: unwanted substances from faeces are stored in pelvic colon
Informações
- Descrição
- Biology FlashCards sobre Digestive System, criado por Lilian Vieyra em 09-06-2015.
- Criado por
- Lilian Vieyra
- Visualizações
- 36
- Tags
- Avaliação