Nervous System A
The primary cell that builds all the structures of the nervous system
Name all structures of the entire nervous sytem
Brain, Spinal cord, and Nerves
What is the central nervous system made of?
Brain and spinal cord
Is the axon terminal where the signal goes TOWARDS or comes FROM?
Goes TOWARDS
What is the peripheral system made of?
Nerves that branch off from the spinal cord.
What does PNS stand for?
Peripheral nervous system
What does CNS stand for?
Central Nervous System
What organ deals with the quick response that is a part of the Reflex Arc
The spine
What does the Somatic divison of the nervous system control?
Voluntary movements of the body
Name the function of the neurotransmsitter Adrenaline
Stress response, fight or flight, excites nervous system, fear response
Two subdivisions of the Autonomic Nervous System--and the function of each
Sympathetic "Fight of Flight" Parasympathetic Division- "rest and digest"
Name FOUR Functional parts of a neuron
1- cell body (soma) 2- dendrites 3- axon 4- myelin sheaths 5- axon terminals (Nerve endings) 6- nodes of ranvier
The division of your peripheral nervous system that is made up of the nerves that control involuntary body responses and functions.
Autonomic nervous sysytem
What does a dendrite do?
Receives neurotransmitters from another neuron's axon terminal
Neurons taking information back to your body are called what?
Motor neurons
The central nervous system is made of these organs
brain and spinal cord
What does an axon terminal hold inside small vessicles?
neurotransmitters
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 purpose is the purpose of the Myelin Sheath on an axon?
to speed up nerve impulses and transmit them neatly
What is the name of the structures that branch away from the trachea in your lungs?
Bronchi / Bronchioles
The messages travel along this structure until it reaches the nerve terminals
the Axon
Explain what happens to an action potential (message) when it reaches the axon terminal
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
Answer all three:
The Cerebrum is responsible for...
The Cerebellum is responsible for...
The Brain stem is responsible for...
The Cerebrum is responsible for... voluntary actions
The Cerebellum is responsible for... coordination
The Brain stem is responsible for... basic life functions
Left atrium, left ventricle, right atrium, right ventricle, 4 valves