Anterior spinothalamic pathway

Question 1

The anterior spinothalamic pathway is also a 3 neuron pathway that carries what modality?

Answer 1

Light or non-discriminative touch as well as pain sensation

Question 2

The majority of the fibers affiliated with the anterior spinothalamic pathway are characterized as what? (3)

Answer 2

1. ) Small
2. ) Unmyelinated
3. ) C fibers

Question 3

In what fashion do the the C-fibers transmit their information and what sensation do they carry?

Answer 3

Slowly, carrying sensation of burning pain, as well as thermal nocicpetive impulses

Question 4

The neurotransmitter of neurons of the Anterior Spinothalamic pathway is…

Answer 4

Substance P

Question 5

True or False:

Each of the neuron cell bodies of the Anterior spinothalamic pathway are located in the same structres as noted in the Lateral spinothalamic pathway

Answer 5

TRUE

Question 6

In regards to the ASP would the The sensation of brushing a piece of cotton across the skin be felt?

Answer 6

Yes, patient is away of being touched but cannot identify texture or precise limits of the stimulus

Question 7

What makes the ASP unique in regards to the trajectory of it’s axons in the 3-neuron pathway?

Answer 7

Trajectory of 2nd order neuron is very random

—It may travel up or down 10 - 12 segments before its crosses through the anterior white commissure

Question 8

It is not until when, that the actual Anterior Spinothalamic Pathway is formed?

Answer 8

Not until the 2nd order neuron axon has crossed the anterior white commissure

Question 9

Where does the ASP ascend to?

Answer 9

The VPL

Question 10

The ASP is also thought to carry what type of information?

Answer 10

non-specific temperature information