digestive system (bio)

Muscle contraction to move food

Absorb nutrients into blood

absorbs excess water

Absorbing nutrients

Cell, tissue, organ, system, organism

mixes food with hydrochloric acid, kills bacteria, produces enzymes

Processing bile to aid in fat digestion, absorbing nutrients, stores glycogen, processing alcohol/drugs

food broken down by chewing, analayse added

makes more enzymes

uses peristalsis to push food down to stomach

stores bile

absorb nutrients into bloodstream

allows more time and chances for absorption

villi and microvilli, active transport, large surface area, long, rich blood supply in villi, constant concentration gradient and rate of absorption due to diffusion in villi

liver cant process the alcohol entering the liver

simple diffusion, facilitated diffusion, active transport

small molecules travel into gut cells and then to the blood by moving from a high to a low concentration

larger molecules, with the assistance of proteins in the cell surface of gut cells, move from a high to a low concentration

molecules in a high concentration in a gut celllood pump through the gut membrane using energy

after food is digested, products are left over and need to be absorbed into blood to be used

produces bile salts, processes glucose and stores excess as glycogen, processes amino acids/fats

cirrhosis, ALD

alcoholic liver disease

a build up of fat impairing the liver's function

breaking down food into smaller soluble molecules

helps with the digestion of fats

allows nutrients to be absorbed into the bloodstream

Transport of small, soluble molecules across cell membranes into the bloodstream

Helps break down food, kills harmful bacteria, prevents infection or sickness, allows protease to work

large fat molecules are broken into smaller fat molecules by bile salts

pancreatic enzyme that digests protein