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Nervous Systerm - Coggle Diagram

- - - - If it is damaged, the are supplied by spinal nerves below the damaged site will be cut of from the brain and will stop functioning resulting in paralysis.
    - - There are also circuits of nerve cells that enable us to perform simple reflexes without direct involvement of the brain.
        
        For example, pulling hand away from something hot.
    - - It allows the brain to monitor and regulate bodily function like breathing and coordinate voluntary movements. _
      - To rely information between the brain and the body.
  - - - Cerebrum.
        
        It is the largest part of the brain.
        
        It is divided into four lobes, each with a different function.
        
        Frontal lobe
        
        parietal lobe
        
        temporal lobe
        
        occipital lobe
        
        It is split down the middle.
        
        Two halves are called the right and left hemisphere that communicate through the cerebral hemispheres.
        
        Left hemisphere:
        
        Logic, language, reasoning, written, number skills and, right hand control.
        
        Right hemisphere:
        
        Creativity, imagination, holistic thought and, left hand control.
      - Cerebellum.
        
        Sits beneath the back of the cerebrum.
        
        Controlling a person's motor skills and balance, coordinating the muscles to allow precise movement.
        
        Abnormalities = speech and motor problems = epilespy.
      - Diencephalon.
        
        Lies beneath the cerebrum and on top of the brain stem.
        
        There are two important structures within:
        
        Thalamus
        
        Acts as a rely station for nerve impulses coming from senses.
        
        Sends them to appropriate part of the brain where they can be processed.
        
        Hypothalamus:
        
        Function:
        
        Regulating body temperature, hunger and thirst.
        
        Links the endocrine system (Hormones) and nervous system, controlling the release of hormones from the pituitary gland.
      - Brain stem.
        
        Responsible for regulating the automatic function that are essential for life.
        
        We cannot live without.
        
        It controls breathing, heartbeat and swallowing.
        
        Motor and sensory neurons travel through the brain stem allowing impulses to pass between the brain and spinal cord.
- - - - Sympathetic nervous system
      - Parasympathetic nervous system
- - - - Voluntary control of body movements
        
        Maintains communication between the CNS and the outside world.
        
        Role is to carry sensory information from the outside world to the brain and provide muscle responses via the motor pathways.
      - Made up of:
        
        Sensory receptors that carry information to the CNS
        
        Motor neurons relay info from the CNS to other others of the body.
    - - Controls unconscious activates and involuntary actions.
        
        Like digestion and breathing.
      - Two parts:
        
        Sympathetic nervous system
        
        Involved in responses that prepare the body for fight or flight.
        
        Impulses travel from the sympathetic nervous system to organs in the body to help us prepare for rapid action when we are faced with a dangerous situation.
        
        For example:
        
        Our heart rate, blood pressure and breathing rate increase, while less important function like digestion, salivation and the desire to urinate are suppressed.
        
        Parasympathetic
        
        Controls bodily function as when a person is at rest.
        
        Includes…
        
        Activating metabolism, helping the body relax and stimulating digestion.