Digestive System Flashcards
intake of food into the stomach
Ingestion
process in which the teeth chew food in the mouth
Mastication
Movement of food from one end of the
digestive tract to the other
Propulsion
movement of food back and forth without
forward movement
Mixing
Moves the bolus from the
oral cavity to the esophagus
SWALLOWING
(DEGLUTITION)
Propulsion of material
through most of the
digestive tract through
peristaltic waves
PERISTALSIS
Contractions that move
material in some (distal)
parts of the large intestine to
the anus
MASS MOVEMENTS
As food moves through the digestive tract,
secretions are added to lubricate, liquefy, buffer, and
digest the food
Secretion
Secreted along the entire
digestive tract, lubricates the
food and the lining of the
tract
MUCUS
Liquefies the food, making it
easier to digest and absorb
WATER
Break down large food
molecules into smaller
molecules
ENZYMES
breakdown of large organic molecules into
their component parts
Digestion
Mastication and mixing of
food
MECHANICAL DIGESTION
Accomplished by digestive
enzymes (secreted along
the digestive tracts)
CHEMICAL DIGESTION
Movement of molecules out of the
digestive tract and into the circulation or into the
lymphatic system
Absorption
Process by which the waste products of
the digestion are removed from the body
Elimination
Lines the GI tract
MUCOSA
A thick connective tissue layer that contains
nerves, blood vessels, lymphatic vessel and small
glands
SUBMUCOSA
Contains both a circular muscle layer and a
longitudinal muscle layer
MUSCULARIS EXTERNA
Made up of a thin connective tissue and simple
squamous epithelium
SEROSA
Serous membrane that lines the walls and organs
of the abdominal cavity
PERITONEUM
covers the organs
(serosa)
Visceral peritoneum
membrane that covers
the interior surface of the wall of the abdominal cavity
Parietal peritoneum
a connective tissue sheet that
holds many organs in place within the
abdominal cavity
Mesentery