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Lesson 6.5 Notes
The notes on 6.5 about injuries and disorders of the nervous system
| Question | Answer |
|---|---|
| What happens when a nerve in the PNS gets damaged? | You lose sensation in that nerve. |
| What is traumatic brain injury? | Injury to the brain that results from a strike to the head either direct or indirect. |
| What are symptoms of mild TBI? | Things that can affect people as a person and their personality like behavioural changes, intellectual troubles, along with tiredness, headaches, confusion, bad vision, bad taste in the mouth, and disrupted sleep. |
| What are some symptoms of moderate TBI? | Things that relate to general illness like headaches, vomiting, seizures, coma, asynchronous pupil dilation, slurred speech, weakness, and personality changes. |
| What are some symptoms of severe TBI? | Symptoms of mild and moderate TBI that results in damage that needs surgical repair to achieve proper blood flow and oxygenation. |
| What is a concussion? | TBI that results from the strike to the head or a shaking of the upper torso where the brain shakes. The most common form of TBI. |
| What is Lou Gehrig's Disease? | A degenerative brain disease where concussions lead to loss of control in the muscles and eventually death. |
| What is chronic traumatic encephalopathy? | A brain disease where neurons become less able to work due to TBI. Leads to reduced cognitive ability and judgement. Can only be determined by brain tissue extraction and analysis. |
| What is cerebral palsy? | A group of nervous system disorders caused by damage to the brain generally caused before or at birth. |
| What can result from cerebral palsy? | Stiff muscles and behavioural effects like speech defects. |
| When the spinal cord gets injured, what determines what areas of the body will lose function? | The higher it is, the more the body loses movement C1 - C4 - Fatal as anything below the neck loses function C5 - C7 - The legs will become paralysed and the arms may become partially paralysed T1 - L5 - The trunk and legs will lose function |
| What is meningitis? | An infection of the meninges that causes inflammation which can be lethal. |
| What is multiple sclerosis? | An autoimmune disease where the immune system attacks myelin sheaths on axons causing inflammation and generally occurs between 20 - 40 and the cause is currently unknown. |
| What is epilepsy? | A group of nervous system diseases that are characterised by repeated seizures due to abnormal electrical activity in the brain. Typically caused by disease or injury and sometimes can be eliminated by surgery. |
| What is parkinson's disease? | The most common nervous system disorder that affects the elderly population characterised by tremours and abnormal motor control caused by destruction of dopamine production. |
| What is dementia? | The loss of multiple areas of cognitive ability caused by inequality blood supply from achelizmer's disease where the brain degenerates by brain proteins tangling which prevents neurons from working properly. |
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