Nervous System Flashcards
The sympathetic and parasympathetic nervous systems are subdivisions of what nervous system?
The autonomic nervous system
An action potential is caused by an influx of what ions into the cell?
Sodium ions
What is a synaptic cleft?
The gap between two communicating neurons
What are afferent nerves called?
Sensory nerves
What are motor nerves called?
Efferent nerves
What is the role of the sympathetic nervous system?
Preparing the body for the “flight-or-flight” response
What is irritability?
The ability to respond to a stimulus
What is a neurotransmitter?
The substance that is released at axonal endings to propagate a nervous impulse
What structures make up the central nervous system
Brain, brain stem, spinal cord
Which neuron process normally receives incoming stimuli?
Dendrites
What is the sequence in a typical reflex arc?
Receptor, afferent/sensory neuron, integration/control center, efferent/motor neuron, effector
What structures make up the peripheral nervous system?
Spinal nerves and cranial nerves
What is the function of the olfactory nerve?
Smell
