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33 Cards in this Set
- Front
- Back
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Major functions of the Brain
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- monitor changes in the external world
- monitor compostion of body fluids - regulate the contractions of knelatal muscles - regulate internal organs - initiate and regulate basic drives - mediate consious sensation - store and retrieve memoroes -regulate moos and emotions -think and perform intellectual functions - redulate sleep cycle - produce and interpret language - process visual and auditory data |
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ANS
function |
-serves as the communcation link between brain and cardiac muscle, smooth muscle, and the glands of organs
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Cellular comp of the brain
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- neurons
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Neurons
def |
-nerve cells that conduction electrical impulses
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Neurons
functions |
- respond to stimuli
-conduct electrical impulses - realese neurotransmitters |
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Dopamine
functions |
-fine motor movement
-integration of thoughts and emothions -decision making -stimulates hypothamamus to reales hormones |
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Decreased dopamine causes
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- parkinsons
-depression |
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Increased Dopamine causes
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- schizophrenia
-mania |
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Norepinephrine
functions |
- Level in the brain effects mood
-attention and arousal - stimulate sympathetic branch of ANS for "fight or flight" |
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Decreased Norepinephrine
causes |
- depression
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Increased Norepinephrine
causes |
- Mania
- Anxiety states -Schizophrenia |
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Serotonin
function |
- sleep regulation, hunger, mood states, pain perception
-hormonal activity - agression and sexual behavior |
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Decreased serotinin cause
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- depression
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Increased Serotonin causes
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-anxiety states
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Histamine
function |
- alertness
- inflammatory response -stimulates gastric secretion |
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Decreased histamine causes
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-weight gain
-sedation |
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GABA
function |
- inhibition
-reduces aggression, exitation and anxiety. -may play a role in pain perception - anticonvulsents and muscle relaxing properties -may impair cogntion and psychomotor functioning |
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Decrease in GABA
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- anxiety
-schizophrenia -mania -huntingtons ds |
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Increase in GABA
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- reduction of anxiety
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Glutamate
function |
- excitatory
-AMPA plays a role in learning and memory |
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Acetylcholine
functions |
-learning, memory
-mood, mania, sexual aggression -stimulates PNS |
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Acetylcholine
decreased |
-alzheimers
huntingtons -parkinsons |
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Acetylcholine
increased |
- depression
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Brain Stem
Function |
- regulates in ternal organs
-blood pressure and blood gases |
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Hypothalumuns
function |
-drives hunger, thirst and sex
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Reticular activating System
Function |
-located in the brainstem
- regulates the entire cycle of sleep and wakefulness and the ability of the cerebrum to carry out conscious mental activity |
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Limbic System - Function
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emotional status and psychological function
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Cerebellum
Function |
-located posterior to the brainstem
- regulation of skeletal muscle coordination and contraction and the maintenance of equilibrium |
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Cerebrum
Function |
- situated on top of and surrounding the brainstem
-responsible for mental activities and sense of being -perception of the external world -emotional status -memory -control of voluntary skeletal muscles -language and ability to communicte |
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Parietal lobe
Function |
- sensor and motor
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Frontal Lobe
Function |
- thought process
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Temporal lobe
Function |
-auditory
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Occipital lobe
Function |
- Vision
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