Nervous System

• The nervous system is a specialised network of cells in the human body and is our primary internal communication system

  2 main functions: to collect, process and respond to information in the environment; to co-ordinate the working of different organs and cells in the body
• The brain is the centre of the nervous system which controls all the organs and systems of the body
• The spinal cord is a large collection of neurons communicating between the brain and the body; sends information inwards to the brain and outwards to the body
• The central nervous system is made up of the brain and spinal cord
• The peripheral nervous system is made up of the somatic and autonomic (sympathetic and parasympathetic branches) system
• The nervous system is made up of the central nervous system and the peripheral nervous system
• The peripheral nervous system transmits information from the environment to the CNS, and from the CNS to other parts of the body
• The somatic nervous system is responsible for movement and transmitting information between the central nervous system and senses; these functions are voluntary- conscious about information moving from your body to the central nervous system
• The autonomic nervous system is responsible for transmitting information between the CNS and internal organs; it is involuntary- unconscious process of information in organs and CNS; functions are divided between the sympathetic (fight or flight) and parasympathetic (rest and digest)
• Stimulus (SAM) -> Amygdala -> Hypothalamus -> Pituitary gland -> Adrenal gland -> Adrenaline