body systems yr 8 Flashcards
system
organs that work together to perform a function
organ
a structure in the body that is composed of different kinds of tissue that works together
tissue
a group of similar cells that work together to perform a specific job in the body
digestive system
a system that breaks down food into small nutrient molecules
circulatory system
the system that moves blood around the body
respiratory system
the system that takes in oxygen and gets rid of carbon dioxide
reproductive system
the system that is involved in producing offspring
oesophagus
the tube that takes the food to your stomach from your mouth
stomach
sac-like organ that chemically and mechanically digests food received from the oesophagus
large intestine
the organ responsible for absorbing water
small intestine
the organ that is mainly responsible for absorbing nutrients
rectum
the organ that absorbs waste material before it exits the body
pancreas
gland that makes digestive enzymes and secretes them into the smaller intestine
liver
organ that makes bile to break down fats; also filters poisoning and drugs out of the body
gall bladder
stores bile produced by the liver until it is need in the small intestine
artery
blood vessel that carries blood from the heart to the body
vein
blood vessel that carries blood from body to the heart
lungs
main organs of the respiratory system, where gas exchange takes place
diaphragm
large, flat muscle at the bottom of the chest cavity that helps with breathing
enzyme
protein that speeds up chemical reaction
carbohydrate
a food group that provides energy
fibre
a food group that helps clean the digestive system
bolus
after food has been chewed up and mixed with saliva it forms this substance