click below
click below
Normal Size Small Size show me how
psych chapter 2
Term | Definition |
---|---|
genotype | an organisms genetic makeup |
phenotype | an organisms physical/ observable characteristics |
endocrine system | hormonal system and glands secrete chemical changes into your blood |
motor neurons | carry messages from your CNS to your muscles and glands |
sensory neurons | carries messages from sense receptors towards CNS (spinal cord and brain) |
dopamine | is a neurotransmitter |
plasticity | ability of the nervous system to adapt or change |
sympathetic division | part of the PNS responsible for the arousing of your body in times of stress or danger (fight or flight) |
somatic nervous system | voluntary system deals with voluntary movements |
how are PNS and CNS separate? | CNS (brain and spinal cord) PNS (all the other nerves) |
what is PNS and acronym for? | Peripheral Nervous System |
Autonomic Nervous System | part of the PNS and deals with involuntary movements (fight or flight) |
dendrites | receive messages from other neurons |
myelin sheath | coats and protects the axon and speeds up the neural impulse |
synapse | the gap between two neurons |
prefrontal cortex | where the executive functions take place, personality functions |
parietal lobe | main job is bodily sensation/ touch |
temporal lobe | processes audition/ sound |
limbic system | deals with emotions |
reticular formation | screens out background noise/ controls alertness |
hippocampus | part of the limbic system involved in establishing long term memories |
thalamus | relays sensory information (not smell), known as the great relay station of the brain |
what is the structure that screens out background noise? | reticular formation |
pituitary gland | regulates glands all over the body, known as the master gland, tells other glands what to do |
emigula | mediates fear and aggression |