The Digestive System
What liquid is food mixed with in the mouth?
saliva
What happens in the bladder?
urine is stored
What the function of the circulatory system?
to transport blood to all parts of the body
Name the three types of blood vessels
arteries, veins and capillaries
What is blood made of?
plasma, red blood cells, white blood cells and platelets
What is the function of the digestive system?
It breaks down food into small particles called nutrients that give us energy to help us grow
Where is urine formed?
the kidneys
What is the function of the heart?
to pump blood around the body
What is the function of the arteries?
they carry blood from heart to the rest of the body
What carries oxygen in the blood?
red blood cells
Name all the organs are involved in digestion
mouth, esophagus, stomach, small intestine, large intestine and anus
What happens in the urethra?
urine leaves the body
Name the two things that the blood transport to the body
nutrients, oxygen
What is the function of the veins?
they carry blood back to the heart
What is the function of white blood cells?
they fight infection
What happens to undigested food?
transforms into faeces in the large intestine leaves the body through the anus
What are the ureters?
tubes that connect the kidneys to the bladder
What can happen if you eat too much food with fat?
it can make it difficult for blood to flow and lead to a heart attack
Describe the capillaries
they are the smallest blood vessels and have thin walls
What is the function of platelets?
they help the blood to clot and form scabs
Describe the process of digestion
Food is broken down by the teeth mixed with saliva in the mouth, the food travels down the esophagus to the stomach where the food mixes with gastric juices, the nutrients go into the blood in the small intestine, the rest passes through the large intestine where water goes out into the body, the waste or faeces then leaves the body through the anus
What happens in the kidneys?
the blood goes through, excess water and waste is removed and made into urine
How can you look after your heart?
exercise, not become overweight, eat the right food, don’t eat too much food with lots of fat
What happens in the capillaries?
the blood gives nutrients and oxygen to the cells and pick up waste products and carbon dioxide
What is plasma?
a watery liquid that carries nutrients and the red blood cells, white blood cells and platelets