Final answer:
The mammalian nervous system is arranged with the neural tube running from nose to tail. The spinal cord has an anterior midline marked by the anterior median fissure and a posterior midline marked by the posterior median sulcus. Dorsal tissues in the spinal cord are associated with sensory functions, while ventral tissues are associated with motor functions.
Step-by-step explanation:
The mammalian nervous system is arranged with the neural tube running along an anterior to posterior axis, from nose to tail. In humans, there are bends in the neuraxis between the brain stem and the diencephalon, as well as in the neck, so that the eyes and face are oriented forward.
The spinal cord is another major organ of the nervous system. It maintains the tube structure and is specialized into certain regions. The anterior midline is marked by the anterior median fissure, and the posterior midline is marked by the posterior median sulcus.
As the spinal cord develops, the dorsal tissues are associated with sensory functions, while the ventral tissues are associated with motor functions.