The Brain And Spinal Cord

Question 1

what is the brain made up of

Answer 1

• grey matter and white matter
• grey matter is made of 100 billion neuron that gather and transmit signals
• white matter is made of dendrites and axons that neurons use to transmit signals

Question 2

what percentages make up the brain and what is the most of in the body

Answer 2

• 75% water and 60% fat

- fattiest organ in the body

Question 3

cerebellum location and function in the brain

Answer 3

• behind the top part of the brain stem

- responsible for movement, posture, balance and speechwhat is the cerebral hemisphere

Question 4

what is the cerebral hemisphere

Answer 4

the left and right side hemisphere of the brain

Question 5

what is the left hemisphere of the brain responsible for

Answer 5

• analytic thought
• language
• logic and reasoning
• science and mat
• right hand control

Question 6

what is the right hemisphere of the brain responsible for

Answer 6

• imagination
• creativity
• art and music awareness
• left hand control

Question 7

medulla oblongata location and function

Answer 7

• lower part of the brain stem

- sustains functions like breathing, swallowing and heart rate.

Question 8

what is the most important part of the brain and why

Answer 8

• medulla oblongata
• because it carries out several crucial tasks like heart rate and blood pressure
• its functions are involuntary and without it we would die

Question 9

what is CT scanning and what does it stand for

Answer 9

• computed tomography
• it uses x rays to make detailed pictures of the body and brain
• you lay on a table and passed though the doughnut shaped ct scanner

Question 10

how do scanners study the activity of the brain

Answer 10

through radioactive chemicals and taking x-ray MRI pictures which measure the activity on the surface of the brain

Question 11

what is a spinal cord injury

Answer 11

any injury that has damaged the spinal cord and the central nervous system

Question 12

what can spinal cord injury affect

Answer 12

motor, sensory and reflex messages may not be able to get past the damage

Question 13

what is a brain tumour

Answer 13

growth of cells in the brain that multiply in an abnormal and uncontrollable way

Question 14

what do brain tumours do

Answer 14

• as it grows it affects the surrounding brain tissue and prevents it from working properly
• affected different parts of the brain cause different things according to what its responsible for

Question 15

why cant some spinal cord injuries be fully repaired

Answer 15

• if the neurons are damaged it can never be fully repaired because we dont have the technology to create or repair them
• the network is also complex so its almost impossible to repair

Question 16

why is it hard to access and investigate the brain and what negatives can arise from it

Answer 16

• brain is incredibly complex and delicate

- investigation or treatment carries risks such as physical damage or increased problems with brain function