12105993
Description
Flashcards by Noah Cliff, updated more than 1 year ago
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Created by Noah Cliff
over 6 years ago
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| Question | Answer |
| Describe the function and explain how a CT works. | A CT scan uses X-ray detectors and builds an image to show the surgeon the shape and structure of the brain by measuring the absorption of the X-Rays. The computer can use this information to give images of different slices. |
| Describe the function and explain how a PET works. | A PET scan shows the activity of areas of the brain or the brain as a whole. In a PET scan, the patient must digest radioactive glucose. This glucose is taken into more active cells, and as the glucose emits gamma rays the scanner can detect them and build an image. |
| How is brain function studied and measured? Advantages? | Using A CT scanner the shape and structure of the brain are detected and any tumours will be found. On the other hand, a PET scan shows the activity of the parts of the brain. This can detect sensory and processing issues in the brain. |
| What could damage to parts of the brain cause? | The damage that originates from a brain tumour could be parts of the brain not working as they were squashed by an expanding tumour. |
| What could damage to parts of the Spinal Cord cause? | Damage to the spinal cord results in information not being able to travel from the brain to the rest of the body resulting in loss of feeling and/or movement. The further up the spinal cord the damage is the less control. (Damage to the neck could lead to Quadriplegia loss of feeling in all limbs) |
| How and why is brain surgery limited? | Brain surgery is very risky as every section of the brain is responsible for its own function (smell, hearing, language). As there is no way to differentiate it is very hard for the surgeon to stay away from vital areas and only cut where it is necessary. |
| What injuries cannot be fully repaired? | Injuries such such as neck damage can result in quadriplegia. This is irreversable till now. |
| Describe what the brain consists of | k |
| Identify these parts of the brain. | 1. Cerebellum 2. Cerebral Hemispheres 3. Medula oblongata |
| Describe the function of the Cerebellum | It is split into 2 halves It controls Balance and posture It coordinates Timing and Fine control of muscle activity (Musicians have large cerebellums) |
| Describe the function of the Cerebral Hemispheres | It is 80% of the brain and has a wrinkled surface for extra surface area separated into 2 halves, each with its slightly different functions. It controls most of our senses, language, memory, behaviour and consciousness. |
| Describe the function of the Medula oblongata | The Medula Oblongata consists of many nerves. It controls your heart rate and breathing rate along with all reflexes. This connects with the brain and the spinal cord. |
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