Nutrients/parts of digestive system Flashcards
help living organisms develop their bodies, grow, heal damaged body parts, and give energy for life and activity.
nutrients/nutrition
2 modes of nutrition
- autotrophic nutrition
- heterotrophic nutrition
can produce their own food
autotrophic nutrition
cannot produce their food
heterotrophic nutrition
The mechanical and chemical process by which complex food substances are broken down into simpler substances.
digestion
parts of the digestive system
- mouth
- esophagus
- stomach
- liver
- gall bladder
- pancreas
- small intestine
- large intestine
- anus
produces saliva where mechanical mastication of food takes place to form bolus
mouth
a muscular tube that conducts peristalsis and serves as passageway for food
esophagus
a muscular sac that contains gastric juices that helps to break down the food chemically
stomach
produces bile that helps in the digestion of fats
liver
helps in the storage of bile and discharging it from the cystic duct
gall bladder
releases pancreatic juices and enzymes which help in the digestion of protein and starch
pancreas
a tube that contains villi which absorbs the nutrients and water coming from the food
small intestine
a tube that absorbs water and salts from the material that has not been digested as food, and gets rid of any waste products
large intestine
an opening that eliminates feces inside the body
anus
4 digestive processes
- ingestion
- digestion
- absorption
- elimination
taking in of food materials
ingestion
breaking down of food into smaller pieces
digestion
movement of nutrients, water and electrolytes from the small intestine into the cell, then into the blood
absorption
undigested material passes out of the system
elimination
