HUMAN RESPONSES

THE BRAIN
1. Cerebral Cortex
  1. Sensory areas
  2. Assosiation areas
  3. Motor areas
2. Coordinated motor responses
NERVOUS SYSTEM
1. Responding to the environment
2. Nervous system Components
  1. Central Nervous system
  2. Peripheral
    1. Sensory
    2. Motor
      1. AUTONOMIC
        'self governing'=
        Homeostasis
        Controlling heightened responses
        Occur in 2 ways
        SYMPATHETIC
        PARASYMPATHETIC
      2. Somatic
COORDINATED MOVEMENT
1. antagonistic muscle pair
2. SYNOVIAL joint e.g Elbow
  1. synovial fluid=lubricant
    1. eases movement of bones at joint
3. Control of cotraction
  1. Nervous system controls muscle action
    1. Motor neurones connected to muscle cells at neuromuscular junction
MUSCLES
1. Muscle Structure
  1. cells elongated to form fibres
    1. Filaments made of ACTIN and MYOSIN
2. INVOLUNTARY (SMOOTH)
3. CARDIAC
4. VOLUNTARY (SKELETAL)
SLIDING FILAMENT MODEL
1. Sacromere
  1. Span from one Z-line to next
2. Protein filaments in muscle cells
  1. Thin
  2. Thick
3. POWER STROKE
  1. 1. Formation of cross bridge
  2. 2. Heads bend, thin filament pulled, ADP+Pi released
  3. 3. Cross bridge broken, new ATP attaches to head
  4. 4. Head group moves backwards, ATP -> ADP+Pi
4. Calcium Ions
5. ATP
  1. Maintanance of supply
    1. 1. Aerobic respiration mitochondria
    2. 2. Anaerobic respiration in sarcoplasm
    3. Transfer from creatine phosphate in sarcoplasm
MUSCLES, NERVES AND HORMONES
1. Fight or Flight
  1. Controlled by sympathetic nervous system
  2. physiological changes

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HUMAN RESPONSES

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	Created by ize_paul over 8 years ago