Intro to NS

Question 1

Explain basic structure of spinal cord (white and grey matter)

*****check

Answer 1

White: on outside/ myelinated

Grey: center

• poster=dorsal side: carries sensory/ afferent signals
• anterior=ventral side: carries motor/ efferent signals
• lateral= visceral efferent/ ANS/ motor system
• **double check this!!!!!!! Mentioned multiple times!

Question 2

Which sections of the spinal cord are associated with sympathetic and parasympathetic activity/ where do their cell bodies originate?

Answer 2

Sympathetic: thoracolumbar area= T1-L4

Parasympathetic: craniosacral area= C3,7,9,10 & S2-4

Question 3

Bipolar, multipolar and pseudopolar neurons

Where in body and what system are they associated with?

Answer 3

Bipolar(rare): in some retinal and olfactory nerves

Multipolar (most common): everything… Motor/inter neurons. Cells of cortex and cerebellum

Pseudo (mainly sensory): peripheral ganglia, pick up sensory info which goes to CNS

Question 4

What is the location of CNS communication with the PNS?

Answer 4

In Ventral and dorsal roots of spinal cord