THE NERVOUS AND ENDROCINE SYSTEM

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  • Created by: _Holly98
  • Created on: 04-04-16 08:54

THE NERVOUS SYSTEM

SPECIALISED NETWORK CELLS - PRIMARY INTERNA COMMUNICATION SYSTEM 

COLLECT / PROCESS / RESPOND INFO ENVIORNMENT

CO-ORDINATE WORKING DIFERENT ORGANS / CELLS BODY

TWO SUB SYSTEMS - CENTRAL NERVOUS SYSTEM & PERIPHERAL NEROUS SYSTEM

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THE CENTRAL NERVOUS SYSTEM

BRAIN CENTRE CONSCIOUS AWARNESS

OUTER LAYER - CEREBRAL CORTEX HIGHLY DEVELOPED HUMANS - DISTINGUISHES US ANIMALS

BRAIN DIVIDED 2 HEMISPHERES

SPINAL CHORD EXTENSION BRAIN - RESPONSIBLE REFLEX ACTIONS 

PASSES MESSAGES TO & FROM BRAIN CONNECTS NERVES TO PNS

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THE PERIPHERAL SYSYEM

TRANSMITS MESSAGES VIA MILLIONS NEURONS TO & FROM CNS

AUTONOMIC NERVOUS SYSTEM - GOVERNS VITAL FUNCTIONS E.G. BREATHING

SOMATIC - CONTROLS MUSCLE MOVEMENT & RECIEVES INFO SENSORY RECEPTORS

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THE ENDROCINE SYSTEM - GLANDS & HORMONES

WORKS ALONGSIDE NERVOUS SYSTEM CONTRL VITAL FUNCTIONS

ACTS SLOWLY POWERFUL EFFECTS

HORMONES SECRETED BLOODSTREAM - AFFECT ANY CELL RECEPTOR FOR PARTICULAR HORMONE

THYROID - THYROXINE - AFFECT CELLS HEART (INCREASE RATE) INCREASES METABOLIC RATE

MAIN GLAND - PITUITARY - IN BRAIN - CONTROLS RELEASE HORMONE OTHER ENDROCINE GLANDS

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EXAMPLES

ADRENAL MEDULLA 

  • RELEASES - ADRENALINE NORADRENALINE
  • EFFECTS - FIGHT OR FLIGHT RESPONSE 

ADRENAL CORTEX

  • RELEASES - GLUCORTICOIDS 
  • EFFECTS - RELEASE GLUCOSE / FATS ENERGY EXPENDITURE. SUPPRESSES IMMUNE SYSTEM 
  • RELEASES - MINERALOCORTICOIDS 
  • EFFECTS - REGULATE WATER BALANCE
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FIGHT OR FLIGHT RESPONSE

STRESSOR PERCIEVED

HYPOTHAMULUS TIRGGERS SYMPATHETIC

ANS GOES PARAYSYMPTAHETIC - SYMPATHETIC STATE

ADRENALINE RELEASED

RESPONSES

THREAT PASSED BODY RETURNS RESTING STATE

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SYMPATHETIC STATE RESPONSE

INCREASE HEART RATE

INCREASES BREATHING RATE

DILATES PUPILS

INHIBITS DIGESTION

INHIBITS SALIVA PRODUCTION

CONTRACT RECTRUN

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PARASYMPATHETIC STATE RESPONSE

DECREASES HEART RATE

DECREASES BREATHING RATE

CONSTRICTS PUPILS

STIMULATES DIGESTION

STIMULATES SALIVA PRODUCTION

RELAXES RECTRUM

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