The brain and the spinal cord

Question 1

The ________&the___________ make up the central_____ system.

Answer 1

brain ,spinal cord

Question 2

What is the spinal cord?

neurones?

Answer 2

its a long column of neurones that run from the base of the brain down the spine.

neurones branch off and connect with other parts of the body

Question 3

Name the 3 main parts of the brain and their function

Answer 3

Cerebrum-divided into 2 halves called cerebral hemisphere.right hemisphere controls muscles in left
and vice versa.Largest part ,responsible for numerous things ;language,intelligence,movement etc

Cerebellum-responsible for muscle coordination & balance

Medulla oblongata-controls unconscious activities such as breathing,heart rate etc.

Question 4

Name 3 types of brain scans positives

Answer 4

MRI- 5 mins,no harmful radiation,soft tissue damage to spinal cord brain tumors.

CT- produce image of brain,shows main structure of brain (diseased,damaged) but not function,can filter out bits you want to see,

PET-structure and function,radioactive tracer injected into bloodstream-shows areas in brain that r active or inactive-useful 4 studying disorders that change the brain s activity-Alzheimers disease.

Question 5

explain why it is difficult to treat problems in the CNS

Answer 5

1) neurones dont repair easily-scientists havent developed ways to repair nervous tissue in CNS
2. in part not easy to access : hard to treat.

3.risk of permanent damage while surgery .