Nervous System
The primary cell that builds all the structures of the nervous system
Neuron
Name the three main structures of the entire nervous sytem
Brain, Spinal cord, and Nerves
what is the central nervous system made of?
brain and spinal cord
What does the Somatic divison of the nervous system conrol?
Voluntary movement of the body
what is the peripheral system made of?
Nerves
what does PNS stand for?
peripheral nervous system
what does CNS stand for?
Central Nervous System
The division of your peripheral nervous system that is made up of the nerves that control involuntary body responses and functions.
Autonomic nervous sysytem
Name the tiiiiiiny empty space between dendrites of one neuron and axon terminals of the connecting neuron
Synapse
Name the function of the neurotransmsitter Adrenaline
Stress response, fight or flight, excites nervous system, fear response
State Two subdivisions of the PNS
Autonomic and Somatic
Name THREE Functional parts of a neuron
1- cell body 2- dendrites 3- axon
What structure functions like a highway and transmits nerve impulses from the body to the brain and from the brain to the body?
The spinal cord
What does a dendrite do?
Receives neurotransmitters from another neuron's axon terminal
This type of neuron carries signals from the central nervous system to muscles and glands, enabling movement.
What are motor neurons?
The central nervous system is made of these organs
brain and spinal cord
What is at the end of a nerve cell to transmit impusles?
neurotransmitters
This part of the brain is responsible for regulating vital functions such as breathing, heart rate, and blood pressure and involuntary responses
Medulla Oblongata
What purpose is the purpose of the Myelin Sheath on an axon?
to speed up nerve impulses, and stop them from leaking out
Neurons taking information back to your body are called what?
motor neurons
An electrical impulse travels along this structure until it reaches the end of a nerve
the Axon
What happens when an electrical impulse travels from one neuron to the next.
It changes to a chemical signal, and releases neurotransmitters that are received by the next neuron across a space called a synapse
Name the gaps between the myelin sheaths on the axon?
nodes of ranvier
This structure in the brain is responsible for coordinating movement and balance.
What is the cerebellum?
Explain a Reflex Arc
sensory impulse in to spinal cord
In response, an efferent signal is sent via a motor nerve to move the body to keep it safe.
This process bypasses the brain first...
Sends the signal to the brain after sending the motor signal to move