Chapter 3A Flashcards
two major sections of the nervous system
CNS and PNS
what are the two sections of the CNS
brain and spinal cord
what are the two sections of the PNS
somatic and autonomic NS
what are the two sections of the autonomic NS
sympathetic and parasympathetic
what is the role of the CNS
integrate and coordinate all incoming sensory information and initiate outgoing motor messages to be sent to the body
what is the role of the PNS
to carry messages between the CNS and muscles organs and glands throughout the body
what is the role of the somatic NS
to carry sensory information to the CNS and carry motor neurons from the CNS to the body
what is the role of the autonomic NS
to control the body’s internal environment in a self-regulated manner
what is the role of the sympathetic NS
dominates when we are under threat increasing our arousal and preparing us to deal with the situation.
what is the role of parasympathetic NS
maintains homeostasis and helps to counterbalance the energizing functions of the sympathetic NS
what is the process of the spinal reflex
sensory receptors, sensory neurons, interneurons, motor neurons, muscles
what is a conscious response
a response that requires input from the brain and awareness
what is an unconscious response
any response that does not require awareness or input from the brain
