Cards (3)

    • Nervous system>>>
      - A specialised network of cells in our human body. based on electrical and chemical signals
      - (endocrine system based on hormones)
      - split into two divisions - central nervous system (CNS) and peripheral nervous system (PNS)
      - function>>>
      - collect, process and respond to information from the environment
      - coordinate the work of different organs and cells
    • central nervous system (CNS)>>>
      - Made up of the brain and spinal cord
      - The brain is divided into two hemispheres
      - Cerebral cortex is the outer layer 3mm thick
      - The brain is more developed in humans than other animals
      - The spinal cord connects is the brain to the peripheral nervous system (PNS) and this responsible for reflexes
    • Peripheral nervous system (PNS)>>>
      - It's subdivided into the autonomic nervous system and the somatic nervous system
      - Autonomic nervous system (ANS) -governs vital functions e.g heart rate, breathing, stress
      - subdivides into the sympathetic and paraympathetic nervous system
      - Semantic nervous system (SNS) - muscle movements
    See similar decks