Digestive Important

hardlygraceful's version from 2015-05-20 20:10

Section 1

Question Answer
Salivary GlandsProduce saliva, uses Amylase to break down starch into a disaccharide.
AmylaseType of enyzme that breaks down starch to a disaccharide
EsophagusMuscular tube from pharynx to stomach, peristalsis begins.
PeristalsisThe involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward.
StomachHCl and pepsin begin protein digestion
PepsinMain enzyme of stomach that breaks down proteins into polypeptides.
Lesser curvatureSuperior curve
Greater curvatureInferior curve
Cardiac orificeOpening between esophagus and stomach (heart is nearby)
RugaeRidges in mucosal lining

Section 2

Question Answer
Small intestineUp to 20 feet+ long in cadaver
DuodenumFirst 10-12 inches, most digestion and absorption here
Duodenal papillawhere pancreatic and common bile ducts enter duodenum
Jejunum2-3 meters (8 feet)
ileumRemaining 4 meters (11 feet) leading to colon at the cecum
Plicae Circulares (Circular Folds)Mucosal folds in small intestine, increases surface area
VilliFinger-like projections of mucosa for absorption, increases surface area, contains blood and lymph vessels

Section 3

Question Answer
Large intestine (colon)Water reabsorption, feces form
CecumExpanded pouch
AppendixAttached to cecum
Sigmoid colonS-shaped segment, returning colon to medial body
Hepatic flexureBend near liver
Splenic flexureBend near spleen
Tenia colilongitudinal smooth muscle bundles
HaustraSac-like segments along length of colon
RectumLast segment, storage of feces
Anal canalVery short, leads to anus
AnusExit for undigested waste
Internal anal sphincterSmooth Muscle
External anal sphincterSkeletal muscle
LiverProduces bile to emulsify fats (make smaller Units)
How many lobes does the liver have?Four
Falciform LigamentSeperates right and left lobes of liver
Hepatic ductsRight, left, and common: collect bile; common joins cyctic duct.
GallbladderStores bile
Cystic ductLeads from gallbladder, joins common hepatic duct
Common bile ductFormed by common hepatic and cystic duct, enters the duodenum
PancreaProduces bicarbonate to neutralize stomach acid, produces digestive enzymes, all enter duodenum
Pancreatic ductConduct bicarbonate and enzymes to duodenum

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