Divisions and Subdivisions of the nervous system Flashcards
what is the function of the nervous system
the nervous system enables the brain and body to exchange neural messages and communicate with one another via neurons
what type of messages are neural messages
electro-chemical
what are the three types of neurons
motor/efferent neurons, sensory/afferent neurons, interneurons
motor/efferent neurons
transmit neural messages about motor movement from the central nervous system to the peripheral nervous system
sensory/affarent neurons
transmit neural messages about bodily sensations from the peripheral nervous system to the central nervous system
interneurons
transfer neural messages between sensory neurons and motor neurons. make up the central nervous system (brain and spinal cord)
what are the divisions of the nervous system
the central nervous system and peripheral nervous system
what are the subdivisions of the PNS
the somatic nervous system and autonomic nervous system
what is the somatic nervous system comprised of
sensory/afferent pathways which are composed of sensory neurons and motor/efferent pathways which are composed of motor neurons
what are the two types of responses
concious and unconcious
concious response
deliberate and voluntary actions that are intentionally initiated by the brain and performed by the body
what systems are used in a concious response
the central nervous system and brain and the somatic nervous system are connected
unconcious response
automatic and involuntary actions that are performed by the body independently of the brain and without concious awareness in response to sensory stimuli
what systems are involved in an unconcious response
physiological responses of the autonomic nervous system and the spinal reflex
how are unconcious responses beneficial
adaptive and protective mechanisms that aid in survival