Digestive System Flashcards
Muscle cells
what do they gae
Muscle cells are packed with mitochondria
provide energy
Tissue defintion
A tissue is a group of cells with a similar strucutre and function
Organ defention
A group of tissues working together for a specific function
Type of organ
Stomach
Lungs
Heart
Intestines
Brain
Three main nutreints in food
Carbohydrates - starch
Protein
Lipids - fat
What happens during Digestion
During digestion large food molecules are broken down into smaller molecules by enzymes
Smaller molecules are now absorbed into the bloodstream
Mouth
1 st part of digestive system
Enzymes in saliva begin to break down starch
Oesophagus
2 nd part of digestive system
Stomach
3 rd part of digestive system
Stomach contaisn hydrochloric acid / this breaks down food
Pancreas
Releases enzymes
Start the digestion of lipids
Liver
release bile/helps speed up digestion of lipids
Bile also neutralsises the acid released from the stomach
Small intestine
walls of small intestine release enzymes
Small intestine what types of dffusion
diffusion / active transport
