Digestive System Flashcards
4 main components of digestive process
Ingestion
Digestion
Absorption
Egestion
Ingestion
Taking in nutrients
Digestion
Breakdown of molecules into smaller components by enzymes
Absorption
Transport digested nutrients into body cells
Egestion
Removal of food waste from body
Mechanical digestion
Cutting/tearing of food into smaller pieces
Chemical digestion
Breakdown of food using enzymes
Mouth
Mechanical + chemical digestion occurs
3 pairs of salivary glands
What is saliva made of
Water, mucus, salivary amylase
What is maltose made of
Starch + salivary amylase + water
Ovula
Uvula blocks nasal passage (so food doesn’t go up ur nose)
Epiglottis blocks larynx to prevent food from going in ur lungs
Peristalsis
Wave like contractions of muscles that move food along the gastrointestinal tracts towards stomach
Stomach
Site of food storage and protein digestion, holds food while it mixes with acid and enzymes to breakdown
Physical and chemical digestion
Sphincters
Strong Circular muscles that move food from stomach
L.E.S
(Lower esophagus sphincter)
Closes opening to stomach, relaxation allows food to enter
Pyloric sphincter
Moves food and stomach acid to small intestine