The Nervous System

• the nervous system controls everything you do: breathing, walking, thinking and feeling.

  the role of the nervous system is to help every part of your body communicate
• The spinal cord carries messages between the brain and other parts of the body.
• nervous system

  A) ?

  B) ?

  
• frontal lobe: reasoning, emotional control/judgement.

  temporal lobe: tells you what you hear, some auditory hearing and helps you keep balance
• parietal lobe: spatial awareness, communicates with other lobes, and multitasks.

  
  

  occipital lobe :tells you what you see
• cerebrum: helps with coordination and control, helps you balance, walk etc. without thinking about it.

  Brain stem: helps regulate your heart rate, breathing, sleeping and eating.
• what will happen if these lobes in the brain get injured?

  frontal lobe: personality changes, difficulty concentrating/planning and compulsivity.
• temporal lobe: memory loss, trouble understanding speech or recognizing faces.
• occipital lobe: blindness on one side of vision, visual field defects (blind spots).
• parietal lobe: difficulty identifying objects by touch, problems with reading and writing.
• parietal lobe: difficulty identifying objects by touch, poor sense of direction and body image problems.
• occipital lobe: blindness on one side of visual field, difficulty reading and writing.
• cerebellum: controls fine motor skills like handwriting, posture, balance, and movement.
• neuron structure

  A) ?

  B) ?

  
• sensory: sends information from the eyes, ears, nose, tongue and skin to the brain.

  
  

  motor: carries messages away from the brain to the rest of the body to allow muscles to move.

  
  

  inter:neurons that connect to brain regions
• neuron response model

  A) ?

  B) ?

  
• how an impulse is transmitted: within cells, electrical signals are conveyed along the cell membrane.
• role of a neurotransmitter: for communication between cells, the electrical signals are generally converted into chemical signals conveyed by small messenger molecules called neurotransmitters.
• describe the need for the peripheral nervous system:

  The PNS sends messages to the heart to keep it beating, the muscles we use for breathing, and the digestive system to keep food moving.
• how the pns affect other systems: it helps all the parts of the body to communicate with each other
• how does a reflex action bypass the brain?: the brain has no direct role in a reflex action as it is an involuntary action that requires no thinking and immediate response to prevent harmful impacts.