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Bones and muscles Digestive system Nervous system Circulatory system Reproductive system
100
What is a joint?
This connects bones to bones.
100
What is the mouth?
This is where you chew your food.
100
What is the brain?
The main organ in the nervous system.
100
What is a heart?
An organ that pumps blood into your body.
100
What is puberty?
The stage of development where a child's body becomes that of an adult.
200
What is a tendon?
This connects bones to muscles.
200
What is the esophagus?
This connects your mouth to your stomach.
200
What is the spinal cord?
This part of the nervous system transmits information.
200
What is a red blood cell?
This part of blood carries oxygen into different parts of your body.
200
What is an ovary?
This is where female egg cells grow and detach once a month.
300
What is a vertebrae?
The backbone is made up of these.
300
What is the small intestine?
This intestine comes right after the stomach.
300
What is a nerve?
These are connected to the spinal cord and send messages to different parts of your body.
300
What is a white blood cell?
This part of your blood fights against infections.
300
What is menstruation?
This is another word for periods.
400
What is a bicep?
This contracts when you bend your arm.
400
What is the large intestine?
In this intestine, the water is absorbed into the bloodstream.
400
What is a receptor cell?
These cells specialize in sensing information and sending it to our brains.
400
What is a platelet?
This part of your blood helps blood coagulate.
400
What are the testicles?
This is where male sperm cells are produced.
500
What is the femur?
The longest bone in your body and located in your thigh.
500
What is the liver?
This organ is also important to digestion.
500
What is an electrical impulse?
This is how messages travel through the nervous system.
500
What is an artery?
This carries blood away from the heart.
500
What is an umbilical cord?
This connects a growing fetus to its mother and transports food and oxygen to the fetus.




Human body

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