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Lecture 5

HLTB01 Lecture 5.pdf

5 Pages

Health Studies
Course Code
Michelle Silver

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HLTB01 Lecture 5 October-09-12 3:09 PM Cue Column: Note-Taking Area: • Nervous system ○ Monitors and communication with all systems ○ Regulateshomeostasis ○ Responsiblefor: Voluntary movement ○ Central nervous system (CNS)  Brain □ Weighs about 2.7 pounds □ Frontal lobe  Convert thoughts into words  Common area for injury □ Temporal lobe  Volume, frequency of sounds  Memory storage □ Brain stem  Well protected; lowest region of brain  Processing at basic level  Controlsinvoluntary movements ◊ Regulates: heart beat, BP, respiration □ Cerebellum  Timing of skilled movements (& accuracy)  Controls voluntary movements ◊ balance, posture □ Occipital lobe  Visual info decoding ◊ ID objects  Aka visual cortex □ Parietal lobe  Sensory perception (touch, temperature,pressure, pain)  Understandspoken & written language □ Amygdala  Greek: almond(shape)  Determines what memories and where to store ◊ Dependson the magnitudeof the reaction/emotion □ Sleep & dreams  As aging, more trouble sleeping  Reversible state of reduced sensory and motor action with environment  Decreased ability to concentrate  Associated w/ memory disorders  REM sleep = deep sleep ◊ Brain mimics activity as if you are awake □ Memory  Diff regions associated with memory  Essential to learning,but also process ◊ Learning modifies behaviour  Ability to recall past experiences, events ◊ Memory helps retrieve what you learned  SHORT TERM ◊ Can rememberabout 7 items for couple seconds ◊ Unless try to save it, will lose it  LONG TERM ◊ Can rememberfor longer periods ◊ DECLARATIVE  Aka explicit memory  Aware of things of remember(ex. Birthday, definitions) ◊ NON-DECLARATIVE  Aka implicit memory (motor memory)  Through other than words (ex. Riding bike) □ Cognitive decline ◊ NON-DECLARATIVE  Aka implicit memory (motor memory)  Through other than words (ex. Riding bike) □ Cognitive decline  4-8 mins of O deprivation, brain damage or death 2  Age related changes ◊ Decrease: brain matter, neurons, speed of transmission ◊ Changes in blood-brain barrier: protects brain from harmful chemicals  Disease related processes ◊ Stroke  Cerebrovascular accident  Blood supply interrupted  Can be also due to inflammation,swelling (3 days after stroke)  Can be treated, prevented
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