Excretory System
These two bean-shaped organs filter your blood.
This system controls your body and sends messages between your brain and body.
What is the nervous system?
Chemicals that travel through the blood and tell the body what to do.
What are hormones?
This organ is a muscle that pumps blood throughout the body.
What is the heart?
These tubes carry urine from the kidneys to the bladder.
What are the ureters?
This long bundle of nerves connects the brain to the rest of the body and sends messages back and forth.
What is the spinal cord?
This gland produces insulin and helps control blood sugar.
Babies are born with about 300 of these, but adults only have 206 because some fuse together.
What are bones?
Blood enters the kidneys, gets cleaned, and the waste turns into this.
What is urine?
The brain sometimes misinterprets information, which can cause these tricky visual tricks.
What are optical illusions?
This hormone is released when the body is stressed or scared.
What is adrenaline?
This is the gas that humans need to inhale to survive.
What is oxygen?
When you sweat a lot, your body may need more of this to help the excretory system.
A super-fast, automatic action your body makes without thinking, like pulling your hand away from something hot.
What is reflex? OR What is response?
Boys and girls go through changes during puberty because of these hormones.
What is estrogen and testosterone?
These are the tiny bumps on your tongue that allow you to taste food.
What are taste buds?
This might happen if your kidneys stopped working properly.
This type of nerve carries messages from the brain to the muscles to make you move.
What are motor nerves?
Describe the speed of the hormonal system's messages.
This organ is capable of regenerating itself completely, even if only 25% of it is left.
What is the liver?