Digestion Flashcards
Salivary Glands
Secretes salvia which contains enzymes to start chemical digestion of carbs
Liver
Produces bile
Gallbladder
Stores bile
Pancreas
Secrete digestive juices right into stomach
Layers of the Wall!
Look in photos
Mucosa, submucosa, muscular layer, serosa
Main function of mouth?
Chewing and breaking down food
Pharynx
Carries air, food, and fluid down from nose to mouth
A site for common illnesses, sore throat and tonsillitis
Esophagus
Transports food directly to stomach from pharynx via peristalsis
Muscles propel food down to stomach
Stomach
J-shaped, pouch like organ
Digest food, limited absorption
Small intestine
Completes digestion and absorbs product of digestion
Large intestine
Most microorganisms are housed here
SA Bolus? Chyme?
Bolus is when food is swallowed. Chyme is gastric juices that is digested in stomach. When it exits the system, its feces
Bolus, chyme, feces
SA: Lower Esophageal sphincter (LES) function
Closes stomach so bile doesn’t come up which closes off trachea by the epiglottis and uvula
Flap your body has ( regulates when it opens and closes)
MC: Stomach expands means that…
The rugae disappears
SA: parts of stomach
Fundus
Body
Pylorus
Pyloric sphincter
SA: fundus
Temporary storage area
SA: stomach…Body
Main part of stomach
SA: stomach…pylorus
Distal portion of the stomach where it approaches the small intestine
SA: stomach…pyloric sphincter
Separates the stomach from small intestine
How is chyme produced
mixing food in the stomach with gastric juice to form semifluid paste which is chyme
Parts of small intestine
Duodenum - first part of the small intestine. It is located between the stomach and the middle part of the small intestine, or jejunum
Jejunum - proximal 2/5 portion of small intestine
Ileum - remainder of jejunum
Intestinal villi
Increase surface area for absorption and secretion
-ase means
Enzyme
Lipase
Enzyme breaking down lipids (fats and fatty acids)
Tripoin
Breaks down proteins
Nucleases
Breaks down nucleic acid
Describes the wave of muscular contraction throuh the alimentary canal towards the anus
Peristalsis
Main function of epiglottis and uvula
Keep food down
