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Phychology Test 1


Central NS All of the Neurons in the brain and spinal cord
Peripheral NS OUTSIDE of the brain and spinal cord
Somatic NS SOMA=BODY Everything that you voluntarily control
Autonomic NS AUTO=SELF automatic functions regulate themselves
Sympathetic NS Body arouses (energy) ***FIGHT OR FLIGHT***
Parasympathetic NS Quiets body emotions
Dendrites receive messages from other neurons (cells)
Soma 2nd part, cell body
Axon 3rd part, fibers that carry information away from the cell body
Axon Terminals branches that house messenger chemicals
Neurons Have single nerve cells
Nerves Large bundles of neurons axons
Neurilemma Thin layer of cells wrapped around axons outside the brain and spinal cord; forms tunnels that damage fibers and they repair themselves
What is inside each axon terminal and are in tiny sacks? Vesicles
Each vesicle is a specific chemical called? Neurotransmitter (NT)
Each NT has a specific function and is needed to push through the axon terminal membrane and is released into ______ to find its receptor on the dendrite of the next neuron. If it does, the message can continue. Synapse (microscopic space between neurons)
Myelin Fatty layer coating some axons
What is the functions of myelin? 1) Insulate the axon 2) protect the axon 3) speed up the neural impulse (message) in some cases up to *200* miles per hour
Acetylcholine Activates muscle to aid movement
Enkephalins/Endorphins related chemicals that help to relieve pain
Adrenaline Provides quick busts of energy
Serotonin Mood chemical (decreased levels result in depression)
Dopamine Normal levels help with happiness and well being
Sensory Neuron nerve cell that carries messages from the senses toward the CNS
Motor Neuron Nerve cell that carries commands from the CNS to muscles and glands
Neurogenesis The production of new brain cells to replace ones that have been lost
Computed Tomographic (CT) scan Computer-enhanced X-ray of the brain or body from a number of different angles
Magnetic resonance imaging (MRI) Uses a strong magnetic field, not an X-Ray, to produce a 3D image of the boys interior
Positron emission tomography (PET) Computer-generated color image of brain activity, based on glucose consumption in the brain
Forebrain Largest
2 halves of the forebrain hemisphere each covered by the cortex
Cortex is wrinkled up Corticalization
4 lobes Frontal Parietal Occipital Temperol
Frontal Lobe sense of smell, movement, and processing thoughts
What are the two extra things in the frontal lobe? Motor Cortex (allows you to move) Brocas area (language- allows us to PRODUCE, only in the left hemisphere)
Pariental Lobe Processes sensory
What is the cortex in the parental lobe? Somatosensory cortex- allows us to understand body sensation
Occipital Lobe Vision
Temporal Lobe Hearing and Language
What is the area in the temporal? Wernicke's area- (left hemisphere only) Allows us to UNDERSTAND meaning of speech
Midbrain 4 structure make up the limbic system
Thalamus "traffic director" for all neural impulses
Hypothalamus (underneath the thalamus) "master gland" controls all of the glands in the body
Hippocampus Consolidates memory into long term
amygdala regulates emotions and process emotional memories
Created by: marygardner