26/10 Flashcards
divisions of the NS
The Central Nervous System and the peripheral nervous system
divisions of the CNS
brain and spinal cord
function of the brain
Controls thoughts, feelings and actions
function of the spinal cord
Connects the brain and the PNS
divisions of the PNS
The autonomic nervous system and the somatic nervous system
function of the SNS
Communicates messages from the PNS to the skeletal muscles
divisions of the ANS
Sympathetic and Parasympathetic nervous systems
function of the sympathetic nervous system
Prepares the body for action (activates FFF)
function of the parasympatheteic nervous system
Calms body after action and returns it to and maintains homeostasis
main functions of the nervous system
- Receive information
- processes information
- coordinate a response
lock and key process
- each type of neurotransmitter has a chemically distinct shape
- when released by the presynaptic neuron, the neurotransmitter (key) searches for the correctly shaped receptor site (lock) on the postynaptic neuron where it then binds
- this binding unlocks the postsynaptic neuron’s response
what is stress
A state of physiological and psychological arousal produced by stressors perceived as a challenge or something that exceeds our ability to cope
eustress
a positive psychological response to a stressor
when is eustress experienced
When stress is beneficial and desireable and not harmful to the body
distress
A negative psychological response to a stressor