Ingestion
What happens in ingestion?
Brings food in
Breaks food down into usable nutrients
What happens in digestion?
Begins in mouth, continues in the stomach
Most takes place in small intestine
What does saliva do? (Name at least 3 things)
Lubricates food so it can be swallowed
Dissolves food particles so food can be tasted (bolus)
Contains amylase enzymes
Breaks down carbohydrates
Beginning of chemical digestion
What happens in the stomach?
stores food
initial protein digestion
Has Cardiac Sphincter: from esophagus to the stomach
Pyloric Sphincter: from stomach to small intestine
(bolus now called Chyme: a semi-liquid mixture of food and gastric fluids)
Incisor (cutting)
Canines (tearing)
Premolars (grinding)
Molars (crushing)
What is the Epiglottis?
A flap of soft tissue that covers the entrance to the trachea to prevent the food from entering the lungs.
What is the esophagus?
connects mouth to stomach
composed of smooth muscle
involuntary action