Question

pick two of the nervous system pathologies to discuss from the list below.  

For each selected pathology, you should provide the following information: an explanation of the underlying functional or structural deficit present in the condition, predicted deficits based on your knowledge of the normal function and structure of the nervous system (these are educated guesses based on your understanding of nervous system function), and an explanation of at least three signs/symptoms that are seen with this condition (based on sources found during research you have conducted into the chosen conditions). Your discussion MUST include an explanation describing how the deficit produces the observable signs/symptoms AND a statement describing how your chosen conditions affect homeostasis within the body.

Choose two of the following nervous system pathologies to discuss:

Parkinson’s disease

Tay-Sachs disease

Multiple sclerosis

Polio

Hydrocephalus

Guillain-Barré syndrome

Bell’s palsy

Answer 1

​​​​​​Parkinson's disease:

This disease occurs due to the process of ageing there is a degeneration of substantia nigra in the basal ganglia which produce the dopamine (neurotransmitters).

Depletion of lack of dopamine in the body produced by the degeneration of substantia nigra is called Parkinson's disease.

The normal function and structure of this nervous system to maintain the voluntary control, posture control, muscle tone etc..

The signs and symptoms of this disease is tremor, rigidity, bradykinesia and postural instability.

Parkinson's disease affect the normal homeostasis of the body by the dopamine reduction, the protein and iron imbalance in the body.

Bell's palsy:

Bell's palsy is nerve compression disease. In which the 7th cranial nerve (fascial nerve) is compressed at the external acoustic meatus junction.

This nerve compression results in lack of stimulus transmission over the CNS. The signs and symptoms of Bell's palsy is unable to smile on one side of face, lack of frowning, drooling of eye lids etc.. There is a homeostatic imbalance.

The signs and symptoms are just because the nerve is compressed so there is a lack of stimulus transmission to the facial muscles.