THE NERVOUS AND ENDROCINE 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

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

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

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

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

STRESSOR PERCIEVED

HYPOTHAMULUS TIRGGERS SYMPATHETIC

ANS GOES PARAYSYMPTAHETIC - SYMPATHETIC STATE

ADRENALINE RELEASED

RESPONSES

THREAT PASSED BODY RETURNS RESTING STATE

INCREASE HEART RATE

INCREASES BREATHING RATE

DILATES PUPILS

INHIBITS DIGESTION

INHIBITS SALIVA PRODUCTION

CONTRACT RECTRUN

DECREASES HEART RATE

DECREASES BREATHING RATE

CONSTRICTS PUPILS

STIMULATES DIGESTION

STIMULATES SALIVA PRODUCTION

RELAXES RECTRUM