Nervous System

Question 1

What is multipe sclerosis and how is it caused?

Answer 1

neurological condition cuased through many discrete lesions affecting myelin in CNS (not PNS)

Question 2

What is stock and glove distribution and how is it commonly caused?

Answer 2

non-specific nerve damage will affect the longest nerves first, causing this.

Vitamin B12 deficiency

Question 3

Describe the distribution of the sympathetic nervous system

Answer 3

Preganglionic cells in thoracic and upper lumbar, leaving via spinal nerves T1-L3 - dorsal and ventral root join to produce one spinal nerve

Sympathetic ganglia in sympathetic trunk - stellate ganglion, middle cervical ganglion, superior cervical ganglion

Question 4

Describe the distribution of the parasympathetic nervous system

Answer 4

preganglionic nerves in brainstem (leave as cranial nerves - vagus) and in sacral (S2-4)

parasympathteic ganglia found on viscera of target cell