Lab 3 Flashcards
mucosal fold; functions to secure the tongue to the floor of the mouth and limits posterior movements of tongue
Lingual frenulum
functions to trap and catabolize pathogens that enter the oropharynx
Lingual tonsil
performs mechanical digestion; mixes/moves food with saliva; initiates swallowing by pushing food into oropharynx
Tongue
raised areas on the dorsal surface of the tongue; function to contain taste buds and tactile receptors
Papillae
function to contain taste buds (3)
Circumvallate papilla
Fungiform papilla
Foliate papilla
function to contain tactile receptors
Filiform papilla
2 incisors, 1 canine, and 2 molars per quadrant
Deciduous teeth (20)
cut pieces of food
Incisors
pierce food
Canines (cuspids)
grind and crush food (2)
Premolars (bicuspids)
Molars (including wisdom teeth)
resists the force of chewing
Enamel
attaches root of tooth to periodontal ligament
Cementum
absorbs shock during biting and chewing
Dentin
contains the pulp
Pulp cavity
nourishes the dentin
Pulp
function in chemical digestion via the production and secretion of saliva into the oral cavity
Salivary glands
closes off nasopharynx during swallowing to prevent food/fluids from entering the nasal cavity
Uvula
functions in mechanical digestion to move food from the mouth into the esophagus
Pharynx
receives air from nasal cavity; allows air into oropharynx
Nasopharynx
receives air from nasopharynx; receives air, food, & fluids from oral cavity; allows air, food, & fluids into laryngopharynx
Oropharynx
receives air, food, & fluids from oropharynx; allows air into larynx; allows food & fluids into esophagus
Laryngopharynx
performs mechanical digestion; peristalsis; transports food bolus from laryngopharynx to stomach; secretes mucus to assist in movement of food
Esophagus
performs mechanical digestion via peristalsis; performs chemical digestion via production & secretion of hydrochloric acid & enzymes
Stomach
functions to contract to close pylorus and to relax to open pylorus to allow chyme into duodenum
Pyloric sphincter
performs mechanical digestion via peristalsis; performs chemical digestion via production & secretion of intestinal juice with enzymes
Small intestine
performs mechanical digestion via peristalsis; performs chemical digestion via fermentation of undigested chyme by bacteria to form feces
Large intestine
performs chemical digestion; synthesizes & secretes pancreatic juice with enzymes & sodium bicarbonate
Pancreas
drains pancreatic juice from pancreas to duodenum
Pancreatic duct
receives bile from common bile duct & receives pancreatic juice from pancreatic duct
Ampulla of Vater
performs chemical digestion; synthesizes & secretes bile; metabolism of carbohydrates, lipids, & proteins; excretes bilirubin & drug metabolites; stores glycogen
Liver
drains bile from right hepatic lobe to common hepatic duct
Right hepatic duct
drains bile from left hepatic lobe to common hepatic duct
Left hepatic duct
drains bile from right hepatic lobe & left hepatic duct to common bile duct
Common hepatic duct
drains bile from cystic duct & common hepatic duct to duodenum
Common bile duct
stores & concentrates bile until it is needed by small intestine
Gallbladder
drains bile from gallbladder to common bile duct
Cystic duct
functions to cover organs in the abdominal cavity and attaches digestive organs to the abdominal wall
Peritoneum (peritoneal folds)
functions as the anterior cover of the small intestine
Greater omentum
functions to attach the stomach and duodenum to the liver
Lesser omentum
functions to attach the small intestine to the posterior abdominal wall
Mesentery
functions to attach the liver to the diaphragm and anterior abdominal wall
Falciform ligament
produces & secretes mucus for lubrication of chyme & protection of stomach lining
Mucosa
provides elasticity
Submucosa
contraction/peristalsis
Muscularis externa
protection of deep tissue layers
Serosa
contracts to prevent chyme from entering the cecum; relaxes to allow chyme to enter the cecum
Ileocecal sphincter
