1.3 Flashcards
(39 cards)
Neural Cells
Basic building of the nervous stem, responsible for transmitting signals throughout the body.
Neurons
Responsible for many of body’s actions
Gial Cells
Cells that support nerve cells, or neurons, in the nervous system
The Reflex Arc
Function in order to maintain a balanced and stable position
Sensory Neurons
Nerve cells that receive sensory input from the environment and transmit that information to the brain
Motor Neurons
Specialized brain cells that transmit impulses from the brain and spinal cord to muscles,glands,and organs throughout the body
Interneurons
Connects sensory and motor neurons in the brain and spinal cord
Mirror Neurons
Provide a mechanism for action understanding, imitation learning, and stimulation of other peoples behavior
Neural Transmission
Transmission of nerve impulses across synapse
All Or Nothing Principle
Describes how nerve cells either fire at full strength or do not
Depolarization
Membrane potential becomes less negative, facilitating the generation of an action potential
Refractory Period
The period immediately after a neuronal firing during which no additional neuronal firings can be completed
Resting Potential
When a neuron is resting
Reuptake
Pre synaptic neuron reabsorbs its released neurotransmitter after the neurotransmitter has done its job by binding to the postsynaptic neuron
Threshold
The lowest point at which a particular stimulus will cause a response in an organism
Multiple Sclerosis
Chronic disease of the CNS where immune system attacks sheath and causes communication problems between your brain and body
Myasthenia gravis
Chronic autoimmune disorder in which antibodies destroy the communication between nerves and muscle, resulting in weakness of the skeletal muscles
Neurotransmitter
Chemical that allows neurons to communicate with each other throughout the body
Excitatory Transmitter
Excite neuron that causes neurons to fire off the message.
Inhibitory Transmitter
Block or prevent the chemical message from being passed along any further
Dopamine
Type of neurotransmitter and hormone that plays a role in movement, memory, and motivation
Serotonin
Neurotransmitter with an integral role in the body like behavior, mood, memory, and gastrointestinal homeostasis
Norepinephrine
Neurotransmitter of the brain that plays as essential role in the regulation of arousal, attention, cognitive function, and stress resctions
Glutamate
Neurotransmitter important to memory cognition and mood regulation