Final answer:
Spinal nerves are the nerves that connect to the spinal cord, containing both sensory and motor fibers which enter and emerge from the spinal cord via the dorsal and ventral nerve roots, respectively.
Step-by-step explanation:
The nerves that connect to the spinal cord are the spinal nerves. According to the information provided, all spinal nerves are combined sensory and motor axons that separate into two nerve roots: the sensory axons enter the spinal cord as the dorsal nerve root, and the motor fibers, both somatic and autonomic, emerge as the ventral nerve root. The spinal nerves are an essential part of the peripheral nervous system (PNS) and have an important role in conveying sensory information from the periphery to the central nervous system (CNS), as well as carrying motor commands from the CNS to muscles and other effector organs.