Final answer:
To match the terms with descriptions: white matter refers to projections remaining in the spinal cord. Ascending tracts carry sensory input to the brain, descending tracts carry motor commands from the brain, and propriospinal tracts coordinate signals within the spinal cord.
Step-by-step explanation:
The question requires matching spinal cord anatomies with their descriptions. White matter projections that remain in the spinal cord can be categorized based on the direction of the nerve impulses they carry. Ascending tracts carry sensory information from the body to the brain, while descending tracts carry motor commands from the brain to the periphery. The propriospinal tracts are those white matter tracts within the spinal cord that coordinate signals within it.
The correct matches are:
- Projections of white matter that remain in the spinal cord - B. white matter
- Ascends to the brain, carrying sensory information - C. ascending tracts
- Descends from the brain to control muscles - D. descending tracts
- Coordinates within the spinal cord - E. propriospinal tracts