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The Nervous system

The nervous system and all of its glory in theory

The brain and the Spinal cord Central Nervous system (CNS)
Everything but the Brain and spinal cord Peripheral Nervous system (PNS)
Leave CNS and feed into the PNS into an effect that responds to the nerve signal Motor signals
Come from the PNS and feed into the CNS for interpretation Sensory signals
Two categorys that the PNS (Periperhal Nervous system) is divided into Autonomic and Somatic
Two categorys that Autonomic is divided into sympathetic NS and parasympathetic NS
Generally stimulatory increased heart rate, vasocontriction systemically but casodilation to skeletal and heart muscles, increased respiratory rate, slows down digestive system, dilated pupils sympathetic NS
generally inhibitory- vasodilation systemically (low blood pressoure) but casoconstriciton to the muscles, pupile constriction, slow down heart and respiration. Stimulates the digestive system parasympathetic NS
The conducting fiber in the Neron Axon
The actual transmitters Axon terminals
They make the myelin Schwann's Cells
an insulating fatty layer that speeds transmission Myelin Sheath
support cells for neurons in both the CNS and PNS these cells undergo mitosis Neuroglia/Glial cells
phagocytic- used to remove dead tissue and attack invaders, the smallest of glial cells mmicroglia
produce the myelin sheath, the most common glial cells ogliodendrocytes
involved in supporting neurons in transmitting impulses (electrolyte balance, make up the blood brain barrier astrocytes
nvolved in producing the cerebrospinal fluid for the blood - CSF barrier ependymal cells
the space that is between two nerves when they meet synapses
these cells support the ganglia (clusters of nerve cell bodies) satellite cells
the two types of synapses axo-dendritic or axo-axonic
An autoimmune disease where the immune system attaks the ACH receptorys. The muscles become progressively weaker over the years. Myasthenia gravis
Caused by the bacteria Clostridium tentanus they produce a toxin that stops the affected neurons from releasing the inhibitory neurotranmitters GABA and glycine. causes SPASTIC PARALYSIS tetanus
a form of food poisoning caused by the Clostridium botulinum. the toxin produced by these bacteria is the most powerful known to mankind one drop can kill 50,000 mice. botulism
how a neurotransmitter is removed from a synapse when it is not needed enzyme degradation, simple diffusion, reuptake
controls appetite, reproductive behavior, inhibtory or modulatory, muscular movement, sleep, and emotional, states such as anxiety serotonin
Mostly excitatory inhibatory at some sites, the releasing nerons of this transmitter degenerate people with alzheimer disease in which memory, speech and perceptual abilities decline. Acetylcholine
Excitatory or inhibitory, CNS internerons involved in diverse brain ad body functions such as memory, mood, sensory, perception, muslce movements etc Norepinephrine
mostly excitatory, increased attention,euphoria dopamine
excitatory, memory and learning Glutamate
inhibitory, in mammalian, same cicuits of glutamate (GABA) Gammaaaminobutryic acid
modulates action of other neuro transmitters ATP
inhibitory, modulate pain, response, inducing euphoria in some cases, like during sexual intercourse of physical stress (child birth or extended physical exercise) Endorphins
inhibitory, modulate pain respose (subclass of endorphins EnKephalins
excitatory, intense, persistent or severe pain, Substance P
modulatory, relaxes smooth muscles in walls of blood vessels causes vessels to dilate, increases blood flow, contributes to make nervous system functions such as learning, sensory responses and muscles movements Nitrous oxide (NO)
directly innervate skeletal muscles somatic motor neurons
innervate face and neck muscles special visceral motor neurons
indirectly innervate cardiac muscles and smooth sucles of the viscera (arteries) and synapse onto neurons of the ganglia of the autonomic nervous system that will then innervate visceral muscles and some glands. General visceral motor neurons
Four categories of the sensory nerves General somatic sensory neurons, Special somatic sensory neurons General visceral sensory neurons Special visceral sensory neurons
impulses of pain, touch, vibration and temperature from the body surface and impulses of muscle sense, tendon sense and joint sense. General somatic sensory neurons
hearing, equilibrium, vision Special somatic sensory neurons
stretch, pain, temperature, chemical changes and irritation in viscera; nausea and hunger General visceral sensory neurons
taste and smell Special visceral sensory neurons
Created by: morganbmarkie



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