digestion begins in this structure
mashes food into a soft ball called a bolus
secrete saliva into the mouth
peristalsis occurs here, but no digestion
muscular organ that contracts and relaxes to churn food like a blender
structure that makes bile
structure that stores bile
makes digestive enzymes like insulin and secretes them into the small intestine
structures that crush and grind food mechanically into smaller bits
responsible for most chemical digestion and absorption of nutrients
increase surface area and absorption
absorbs water; bacteria here digest fiber and make vitamins B and K
secreted into the mouth, lines esophagus and stomach
proteins that speed chemical reactions and break down nutrients into molecules
breaks down fats into smaller peices so that enzymes can digest the fat
starches are chemically and mechanically digested here
proteins are the only nutrient digested here
contains mucus, enzymes and water; moistens food
digested by bacteria, which cause gas as a waste product
the movement of molecules from an area of higher to concentration to lower
the breakdown of food into molecules small enough to pass through cell membranes
the breakdown of food into smaller particles
the name of food, now a liquid, as it leaves the stomach and enters the small intestine
The process by which nutrient molecules pass through the wall of the digestive system into the blood.
The flap of tissue that seals off the windpipe and prevents food from entering.
A short section at the end of the large intestine where waste material is compressed into a solid form before being eliminated.
The opening at the end of the digestive system through which wastes are eliminated.
body's response to the internal stimulus of something harmful in the stomach
produced by the stomach, kills bacteria, causes proteins to clump