Question

learning: chapter 15: group 1
question
all of the following are true of the organization and patterns of spinal cord tracts, except:
answer
both ascending and descending tracts consist of chains of neurons and associated nuclei.
processing occurs at several points along a tract.
tracts are typically paired, and involve both the brain and spinal cord.
the number of synapses is the same for all tracts; there are always 3 neurons in each ascending and descending tract.
i dont know yet

Explanation:

• Ascending and descending tracts do consist of chains of neurons and associated nuclei.
• Processing does occur at several points along a tract.
• Tracts are typically paired and involve both brain and spinal cord.
• However, the number of synapses is not the same for all tracts. Ascending tracts usually have 3 neurons (first - order, second - order, third - order), but descending tracts can have a variable number of neurons depending on the specific tract (e.g., some descending tracts may have a direct connection from the brain to the spinal cord neuron without multiple synapses in between in a simple sense).

Answer:

The number of synapses is the same for all tracts; there are always 3 neurons in each ascending and descending tract.