Nervous system

• Central nervous System - body’s master control unit
• The nervous system

  
• Peripheral nervous system: sends information from the CNS to the outside world. Sends messages from the CNS to muscles and glands
• Spinal cord: a column of nerves between the brain and PNS
• Brain stem: connects to the brain and spinal cord
• Brain stem: connects to the brain and spinal cord
• Brain: divided into 3 major parts: hindbrain (lower brain), midbrain, forebrain
• Autonomic nervous system: sends information to and from internal bodily organs. Autonomic (involuntary) and made up of two parts: sympathetic and parasympathetic
• Somatic nervous system: sends information from receptor cells in organs to the CNS. Receives information from the CNS to muscle cells
• Somatic nervous system: sends information from receptor cells in organs to the CNS. Receives information from the CNS to muscle cells
• Sympathetic nervous system: prepares the body for an action like fight or flight
• Parasympathetic nervous system: calms the body and helps the body conserve energy
• Parasympathetic nervous system: calms the body and helps the body conserve energy