PNS

Question 1

Which neurones originate from neural crest cells?

Answer 1

Sensory neurones
Post-synpatic/ganglionic autonomic neurones
- parasymp and symp

Question 2

Which neurones originate from spinal cord?

Answer 2

Motor neurones
Pre-synpatic/ganglionic neurones
- parasymp and symp

Question 3

How many neurones are in a motor nerve?

Answer 3

Upper motor neurone - exclusively in CNS

Lower motor neurone - exclusively in PNS

Question 4

How many neurones are in an ANS nerve? Doesnt make sense but

Answer 4

3
Hypothalamus to brain stem - if para, or spinal cord if symp
Stem/cord to synapse/ganglion
Ganglion to effector cell