Neuron Basics
What part of the neuron receives signals from other cells?
Dendrite
What two structures make up the CNS?
Brain and spinal cord
What does the PNS connect the CNS to?
The rest of the body
What is the largest part of the brain?
Cerebrum
How many cranial nerves are there?
12
What part of the neuron sends messages away from the soma?
Axon
What is the main function of the CNS?
What are the two main divisions of the PNS?
Somatic and autonomic
What part of the brain controls balance and coordination?
Cerebellum
What are the four sections of spinal nerves?
Cervical, thoracic, lumbar, sacral
What is the main body of a neuron called?
Soma (cell body)
What connects the brain to the rest of the body?
Spinal cord
What does the Somatic Nervous System control?
Voluntary movements
What part of the brain controls breathing and heart rate?
Brain Stem
What does the sympathetic nervous system do?
Activates “fight or flight”
What is the tiny gap where two neurons communicate?
Synapse
What protects the brain and spinal cord?
Skull and vertebrate
What does the Autonomic Nervous System control?
Involuntary movements like heartbeat and digestion
What part of the brain is responsible for thinking and memory?
Cerebrum (frontal and temporal lobes)
What does the parasympathetic system do?
Calms the body (“rest and digest”)
What type of signal travels down the axon?
Electrical impulse (action potential)
Which part of the CNS controls reflexes?
The spinal cord
Name the two branches of the Autonomic Nervous System.
Sympathetic and parasympathetic
What connects the two sides of the brain?
Corpus callosum
What is a reflex and which part of the body controls it?
An automatic response controlled by the spinal cord