science- human nutrition and digestion

year 7 human nutrition and digestion topic key words and definitions

why we need carbs

provides energy

why we need protein

needed for growth and to repair cell tissues

why we need fats

helps the body store energy

why we need minerals

essential for making haemoglobin, which transports oxygen around the body in red blood cells

why we need vitamins

needed to maintain healthy gums

why we need fibre(roughage)

increases bulk of food and helps with digestion

water

needed for all processes in your body. 70% of your body is made of this

unit of energy

kilajoules (KJ)and joules(J)

what health problems can too much fat cause

heart disease

what health problems can too much sugar cause

tooth decay

what health problems can not enough protein cause

poor growth

what health problems can not enough carbs cause

poor growth

what is done in the mouth

food is chewed here

what is done in the oesopahgus

transports chewed food to stomach

what is done in the stomach

churns food

what is done in the small intestine

small soluble products of digestion are absorbed into the bloodstream here

what is done in the large intestine

undigested waste comes here. water goes into the body. leaves behind poop.

what is done in the rectum

lets out poop and pee

what is does in the anus

hold poop and pee

what is done in the salivary glands

produces saliv which contains and enzyme to chemically digest food