The Axon Reflex in the C-PMN

Question 1

What is the process responsible for movement of:
mitochondria,
lipids,
proteins,
and synaptic vessels;
carrying neurotransmitters to and from a neuron’s cell body to the axon terminal branches, and back?

Answer 1

AXONAL TRANSPORT

Question 2

What painful stimuli will a C nociceptor respond to? (3)

Answer 2

MECHANICAL
\+
THERMAL
\+
METABOLIC

(slow, burning, long-lasting pain produced)

Question 3

Name the neurotransmitters in the dorsal horn?

Answer 3

GLUTAMATE
+
SUBSTANCE P

Question 4

What does the release of glutamate and substance P from the proximal end of the first order neuron contribute to?

Answer 4

TRANSMISSION OF THE AP TO THE 2ND ORDER NEURONS which make up the spinothalamic tract.

Question 5

APs in certain branches of the unipolar C-PMN neuron can move centrally towards the ________, and peripherally to where?

Answer 5

CNS
+
END OF THE TERMINAL BRANCHES

Question 6

The C-fibre axon reflex is a local reflex arc that only involves the distal/peripheral axon of the C-PMN. What is not involved?

Answer 6

SPINAL CORD