AOS DP 1 Flashcards
nervous system
communicating system for the body to receive process and respond to stimuli
central nervous system
processes and responds to information from PNS
peripheral nervous system
processes and responds to information from CNS
brain
master control organ responsible for everything
spinal cord
sends sensory information from CNS to PNS
somatic nervous system
voluntary actions carry messages to and from organs muscles and glands
autonomic nervous system
involuntary actions visceral muscles
sympathetic nervous system
activates in time of stress prepares for action by activating flight or fight response
parasympathetic nervous system
normal functioning homeostasis responsible for freeze response
spinal reflex
involuntary unconsciousness controlled by somatic nervous system
spinal reflex process
receptors detect stimulus
information from receptors travel through sensory neurons in an afferent direction to CNS
interneurons in spinal cord intercept messages and initiate response
motor neurons transmit messages in an afferent direction to skeletal muscles to move
messages continue to brain for processing and perception of pain
flight or fight response
response for survival when under threat
characteristics of flight or fight
pupils dilate
increased heart rate
increase the release of glucose in the blood
digestion stops
