Intro | Central Canal | Dorsal Horn | Dorsal Root | Dorsal Root Ganglion | Grey Matter | Motor Nerve | Sensory Nerve | Spinal Cord | Spinal Nerve | Ventral Root | White Matter
Part 1: Image-Mapped Tutorial
Part 2: Matching Self-Test
Part 3: Multiple-Choice Self-Test
Regions of the spinal cord where the density of neuronal cell bodies is great are called Grey Matter. The high levels of protein and pigment molecules found in the cell bodies underlie the darker appearance of these areas. Grey matter is found in the central regions of the spinal cord and has the general appearance of the upper-case letter H. This general appearance takes on distinguishing features that help to identify the different levels of the spinal cord along the length of the vertebral column. Grey matter is also densely packed with dendrites, where much exchange of information takes place between incoming and outgoing signals and interneurons forming synapses between them.