Bio psych Flashcards
What is Peripheral NS?
Neuron outside CNS linking it to other parts of body
Somatic and Autonomic NS
Somatic NS function
Transmits between receptors and CNS
Skeletal voluntary movement
Autonomic NS function
Involuntary body movement
controls vital organs
Sympathetic NS function
Fight or flight response, increase adrenaline, heartrate, respiration, dilute eyes
Parasympathetic NS function
Maintain homeostasis, decrease adrenaline, heartrate, respiration
Structures of CNS
Brain, spinal cord
Structure of Neurons
Dendrites, cell body, axon, axon terminals, myelin sheath
What are Neurotransmitters?
Chemicals that facilitate neuron of messages between neurons
Can be Inhibitory or Exhibitory
Inhibitory vs Exhibitory
Exhibitory - Increase probability post-synaptic neuron will produce action potential
Inhibitory - Decrease probability
Stages of neurotransmission
- Action potential occurs in pre synaptic neuron
- Neurotransmitters released into synapse
- Diffuse across synapse to terminal on post neuron
- Post synaptic neuron repropagate action potential if exhibitory threshold reached
- Reuptake occurs
Parts of the brain
Forebrain (Cerebral cortex, Thalamus, Hypothalamus), Hindbrain(Medulla, Cerebellum) and Midbrain(Reticular formation)
Part of Cerebral cortex
Frontal, Parietal, Occipital and Temporal lobes
Function of frontal lobe
Personality, high order functions
Parts of frontal lobe
Prefrontal cortex, primary motor cortex, Broca’s area(Left)
Function of Broca’s area
Production of fluent speech
If Broca’s area was damaged
Expressive Aphasia, speech not fluent, incorrect grammar
Function of Prefrontal cortex
Executive functions e.g attention, problem solving, memory, decision making