The spinal cord is made up of the pons and the medulla. the brain and the brain stem. white and gray matter. gray matter only.

The correct answer is White and Grey matter.

Spinal cord is the part of the central nervous system, which connects a large part of the peripheral nervous system with the brain. It is a tubular structure extending from medulla oblongata ( in the brain stem) to the lumbar region (in the vertebral column).

Gray matter is present in the core of spinal cord and white matter is present on the outside of the spinal cord.

Gray matter possesses the neural cell body, axon terminals, and dendrites whereas white matter comprises of axon and myelin sheath. They are the two important tissues of the central nervous system (CNS) and injury to any of them can interfere the activity of the CNS.

this transfer is call conjunction