The Nervous System, The Nervous System
Terms in this set (33)
A small space across which an impulse travels to move from one neuron to another.
Made up of the brain and spinal cord.
Made up of all the nerves outside the brain and spinal cord.
The branch part of the neuron that receives messages from other neurons. It receives these messages as neurotransmitters (chemicals released from another neuron)
The branch part of the neuron that transports messages away from the cell body
Made up of a cell body, dendrite, and axon. It is responsible for passing electrical impulses to and from the brain.
When the spinal cord is required to interpret an impulse from the brain from sensory receptors and react immediately.
Made up of bundles of neurons that carry impulses from all parts of the body to the brain and from the brain to the nerves
The regulation of steady, life-maintaining conditions inside an organisms.
Any change inside or outside your body that brings about a response in a living organism.
Messages carried by nerve cells
Types of neurons
You have 3 types of neurons. Motor, sensory and interneurons.
Nerve cells that receive information and send impulses to the brain or spinal cord
Nerve cells that relay impulses from sensory nerve cells to motor nerve cells
Nerve cells that conduct impulses from the brain to muscles and glands throughout your body
Nerve cells do not touch each other, yet still pass impulses to each other.
The space between nerve cells where the message is passed from one neuron to the next.
The chemical released when an impulse reaches the end of an axon to pass the message onto the next neuron
Coordinates all of your body activities. Receives and processed information from the body.
In the peripheral nervous system the somatic division controls voluntary actions. These include things like moving our arms to grab an object.
In the peripheral nervous system the autonomic system controls involuntary actions. These include things like breathing and heart rate
Injury to the spine can result in loss of muscle movement.
An involuntary, autonomic response to a stimulus controlled by the spinal cord. It is a rapid, predictable, and involuntary response.
For your sense of touch sensory receptors are found in internal organs and skin. These sensory receptors can pick up changes in touch, pressure, pain, and temperature.
In this picture of neuron structure what is letter "A" pointing to?
In this picture of neuron structure what is letter "B" pointing to?
In this picture of neuron structure what is letter "C" pointing to?
In this picture of neuron structure what is letter "D" pointing to?
In this picture of neuron structure what is letter "E" pointing to?
Efferent Division of the PNS
Division of the PNS that carries impulses/information away from the CNS. An example are motor neurons
Whitish, fatty material that covers axons and helps to insulate the nerve
The master controlling and communicating system of the body
Division of the PNS that carries impulses/information to the CNS. An example are sensory neurons