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63 Cards in this Set

  • Front
  • Back
Central Nervous System
Brain and spinal cord
Spinal Cord
Bundle of long neurons running through the spine
Neuron
individual nerve cell
Central part of nerve cell; contains nucleus
Cell Body
Small branches extending from cell;receive messages from other neurons
Dendrites
Long tail of neuron; sends messages to other neurons
Axon
Have sacs filled with fluid chemicals
Neurotransmitters
Located inside the neuron, positively or negatively charged particles
ions
Charge of Ions INSIDE cell membrane
negative
charge of ions outside cell membrane
positive
Positive ions entering cell membrane;process called? (resting to awake)
Depolarization
Once neural trasmission starts this process goes into effect
all-or-none principle/action potential
How many neural connections inside body?
trillions
Neurons work together through....
synaptic vesicles
Excitatory Neurotransmitters
message to keep sending
Inhibitatory Neurotransmitters
Message to stop
Where is the synapse located?
gap between neurons
Where are receptor sites located?
end of dendrites
Neurotransmitter that wants muscle to move faster.
Acetylcholine (AcH) - works with adreniline
Neurotransmitter that is a mood enhancer
Dopamine
Neurotransmitter that impacts mood.
Serotonin
Neurotransmitter that is given off in the sympathetic nervous system if you are scared or anxious.
Norepinephrine
Neurotransmitter that is the major excitatory neurotransmitter in the brain
Glutamate
Cells that outnumber neurons (50:1)
Glial Cells
Cells that provide nutrients to neurons, enhance what happens at synapse and new neurons arise out of them
Glial Cells
Speeds up neural transmission
Myelin sheath
Interneurons are used for...
simple reflexes
Nervous system that has sensory (afferent) neurons and motor (efferent) neurons.
Peripheral Nervous system
neurons that take in sensations
Sensory (Afferent) Neurons
neurons that give you reactions
Motor (Efferent) Neurons
Sysmpathetic and Parasympathetic are both a part of the..
Autonomic Nervous system
System of Autonomic Nervous systems that responds to psychological or physical stress
Sympathetic (dog attack-fight or flight) - activates/inhibits organs
System of autonomic nervous system that helps maintain balanced regulation of internal organs and large body muscles
Parasympathetic (After dog fight-everything okay)
Part of brain that performs routine functions that keep body working
Hindbrain
Part of brain that includes medulla, pons, and cerebellum
Hindbrain
Part of Hindbrain (3 parts total) that is the bottom of brain stem
Medulla (breathing reflexes)
Part of Hindbrain (3 parts total) that helps balance and hearing
Pons (middle of hindbrain, above medulla)
Part of Hindbrain (3 parts total) that is in charge of motor coordination and memory
Cerebellum (Back bottom of brain -protected)
Center for postural reflexes linked to senses and spacial sound
Midbrain (above pons which is above medulla)
The Two distinct areas of the forebrain
1 thalamus, hypothalamus, limbic systems
2 cerebral cortex
The message relay station located in the forebrain that controls all senses except smell
Thalamus
Part of forebrain that is in control of entire autonomic system (body temp., emotions, sexual drive)
Hypothalamus
Part of forebrain that controls aggression and emotion
Amygdala
Part of forebrain that controls spacial memory and new memories
Hippocampus
Part of forebrain that controls language/intelligence, voluntary actions, and conscious experiences
Cerebral cortex
What are the four lobes of the brain (cerebral cortex)
1 frontal lobes (thinking, memory)
2 Parietal Lobes (in back - body sense, math, visuospatial)
3 Temporal Lobes (sides - language, music, hearing)
4 Occipital Lobes (very back -Vision)
EEG?
Electroencephalogram (brain waves)
PET
Positiron emmision tomography (Radioactivity)
MRI
Magnetic resonance imaging (looks at structures)
fMRI
Functional MRI measures (doing something when scanning)
MEG
Magnetoencephalography (Magnetic waves)
DTI
Diffusion Tensor Imaging (measures axons of brain)
Side of hemisphere that controls language, logical and verbal info
left
Side of hemisphere that controls shapes, location, visual spatial info
right
When gray matter decreases and white matter increases
during development
Systems that controls regulation of bodily processes
Endocrine System
Secretes neuropeptides and hormones
glands
Activates body organs during physical stress or emotional arousal
hormones
Gland that is largely controlled by hypothalamus. regulates body's reaction to stress and resistance to disease
Pituitary gland
Glands that sit atop kidney. Secrete variety of hormones in emotional arousal (cortisol, epinphrine and norepinphrine
Adrenal glands
Glands that produce sex cells
Gonads
Gland that controls metabolism
Thyroid
Gland attached to top of thalamus and secretes melatonin (regulates mood and sleep)
Pineal