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The liver helps in the digestion of fats by breaking them and controlling blood
sugar levels.
The kidneys help to remove waste from our bodies.
Most of the nutrients are absorbed into our bloodstream through the small
intestine from the food we eat and drink.
The large intestine absorbs water from waste and produces stool.
Key Words
external internal brain skull signals messages
lungs ribcage windpipe inhale exhale expand
contract heart chambers atria ventricle arteries
veins stomach digestion small intestine large intestine liver
kidneys abdomen spleen digestive juices bladder
Let’s Exercise
Let ’ s Ex er cise
I. Choose the correct option.
1. is an internal organ.
a. Eye b. Brain c. Head d. Ear
2. Lungs are protected by the .
a. Skull b. Heart c. Ribcage d. Kidneys
3. circulates blood throughout the body.
a. Brain b. Stomach c. Lungs d. Heart
4. Digestion starts in the .
a. Mouth b. Small intestine
c. Large intestine d. Liver
5. remove waste from the blood.
a. Lungs b. Kidneys c. Arteries d. Veins
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