Ch 9 W1 Flashcards
Specialized cells that do all the support activities for the nervous system
Neuroglia
Cells that carry out all of the control functions for the nervous system
Neurons
Are the protective membranes that surround the brain and spinal cord
Meninges
The fluid surrounding the brain and spinal cord is called
CSF
Composed of the nerves outside of the brain and spinal cord
Peripheral nervous system
Controls voluntary muscle movements
Somatic nervous system
Carries instructions from the brain down to the body tissues
Motor nervous system
Controls smooth muscle , cardiac muscle, and glands
Autonomic nervous system
Involved in resting and digesting
Parasympathetic nervous system
Composed of the brain and spinal cord
Central nervous system
Involved in the fight or flight response
Sympathetic nervous system
Carries information about the environment up to the brain
Sensory nervous system
The portion of the neuron that receives information from the environment or from other cells
Dendrite
The portion of the neuron that generates signals sent to other cells
Axon
The tiny space between the neuron sending the signal and the cell receiving the signal
Synapse
Special chemical used to send signal across the synapse
Neurotransmitter
A wave of depolarization and depolarization that travels down an axon
Action potential
A lipid sheath that surrounds an insulates the axon
Myelin
Outermost layer of the meninges
Dura mater
Innermost layer of the meninges
Pía mater
Diagnostic test that involves collecting a sample of CSF
Lumbar puncture
Which disease is characterized by an autoimmune attack on myelin in the CNS?
Multiple sclerosis
What viral disease can cause destruction of motor neurons in the spinal cord?
Polio
