The BRAIN
How many neurons are there in the human brain?
80-100 Billion
This “feel good” emotion is the opposite of sadness.
Happiness
These special cells send messages through your body.
Neurons
These two organs filter waste from your blood.
The kidneys
The first step of the scientific method is usually noticing something and asking a…
Question
Your brain is connected to your spinal cord via the?
Brain stem
This word describes a feeling you get when something is uncertain or makes you nervous.
Anxiety
This long cord carries messages between your brain and your body.
The Spinal Cord
This liquid waste your body produces is stored in the bladder.
Urine
A prediction you make before doing an experiment is called a…
Hypothesis
What is the liquid called that your brain is surrounded by?
Cerebral Spinal Fluid
This skill helps you understand how someone else is feeling.
Empathy
This part of the nervous system controls things you don’t think about, like digestion and heartbeat.
Autonomic Nervous System
These small tubes carry urine from the kidneys to the bladder.
Ureters
The part of an experiment that stays the same on purpose is called a…
The control variable
REM stands for?
Rapid Eye Movement
This neurotransmitter is released when its time for you to feel happy
Dopamine
A message sent through the nervous system when you react quickly without thinking (like pulling your hand back from something hot).
A reflex
This process removes liquid waste from the body.
Excretion
Information you collect during an experiment is called…
Data
How many lobes are there in the human brain?
4
This part of the brain plays a major role in strong emotions like fear.
The Amygdala
This term describes the system that includes the brain and spinal cord.
The Central Nervous System
These tiny filtering units inside the kidneys clean the blood.
Nephrons
The part of an experiment that you change on purpose is called the…
Independent Variable