PNS
What are the five sense organs?
Eyes, nose, mouth, ears, skin
What does CNS stand for?
Central nervous system
Where in the body are neurons found?
All over your body
What are the lobes of the brain?
Occipital lobe, parietal lobe, frontal lobe, temporal lobe
What are the five senses?
Taste, smell, touch, sight/vision, hearing
What does PNS stand for?
Peripheral nervous system
What are the parts of the CNS?
Brain, spinal cord
What is the long, slender nerve fiber extending from a neuron’s cell body called?
axon
True or false: the occipital lobe is the largest lobe.
False! It’s the smallest.
What is the nerve connected to your eye?
Optic nerve
True or false: the brain is part of the PNS.
False!
True or false: the brain is the biggest organ.
False – it’s skin!
What are the spikey structures on the head of the neuron called?
dendrites
Which lobe is responsible for vision?
Occipital
What is the colorful part of your eye?
Iris
True or false: nerves are made of neurons, and send signals to and from your brain and body.
True!
True or false: the heart is part of the CNS.
False!
What is myelin?
It’s a fatty substance that covers and protects the axon, and makes messages travel more efficiently down the axon.
Which lobe is responsible for planning and decision-making?
Frontal
Is the cerebellum bigger than the cerebrum?
No!
How fast can the nervous system send messages?
184 mph
True or false: the brain is more complex than the heart.
True!
How many neurons are in the human body?
86 billion
What is the biggest lobe of the brain?
Frontal
What is a CVA?
Cerebrovascular accident (stroke)