B3.1.5 Nervous System Damage

Question 1

Two systems of mammalian nervous system

Answer 1

CNS
PNS

Question 2

How can nervous system damage occur

Answer 2

Injury
Disease
Genetic condition
Ingesting a toxic substance

Question 3

Damage to the PNS

Answer 3

Inability to detect pain
Numbness
Loss of coordination

Question 4

Damage to CNS

Answer 4

Loss of control of body systems
Partial or complete paralysis
Memory loss or processing difficulties

Question 5

CNS regeneration

Answer 5

It can’t
Any damage is permanent unless it can be corrected by surgery

Question 6

PNS regeneration

Answer 6

Limited ability
Minor nerve damage often self heals
More severe nerve damage can be treated through surgery

Question 7

Treatments for brain conditions

Answer 7

Radio/chemo therapy- treat brain tumour
Surgery remove damaged brain tissue
Deep brain stimulation- inserting an electrode to stimulate brain function

Question 8

Why is it difficult to identify and repair spinal cord damage

Answer 8

Consists of 31 pairs of nerves each of which have many nerve fibres
Spinal cord is 1.5cm in diameter
Therefore identifying and repairing damage to an individual nerve fibre without damaging others is extremely difficult
Usually lead to permanent loss of function/disability

Question 9

PARKINSONS

Answer 9

Progressive neurodegenerative disorder
Affects movement and motor function
Characterized by symptoms like tremors, rigidity, slowness of movement and postural instability
Caused by the loss of dopamine-producing nerve cells in the brain, particularly in the substantia nigra
Treatment options include medication, deep brain stimulation, and physical therapy