GENERAL HISTOLOGY

Detailed explanation-1: -Like the brain, the spinal cord consists of gray and white matter. The butterfly-shaped center of the cord consists of gray matter. The front wings (usually called anterior or ventral horns) contain motor nerve cells (neurons), which transmit information from the brain or spinal cord to muscles, stimulating movement.

Detailed explanation-2: -The grey matter, in the center of the cord, is shaped like a butterfly and consists of cell bodies of interneurons and motor neurons, as well as neuroglia cells and unmyelinated axons. Projections of the grey matter (the “wings”) are called horns.

Detailed explanation-3: -Surrounding the ependymal layer is the gray matter – a region containing cell bodies – shaped like the letter “H” or a “butterfly”. The two “wings” of the butterfly are connected across the midline by the dorsal gray commissure and below the white commissure (Figure 3.6).

Detailed explanation-4: -lateral horns. A narrow band of gray matter known as the. gray commissure stretches across of the center of the spinal cord and connects the two sets of horns. In the middle of the gray commissure is the. central canal, which contains cerebral spinal fluid.

Detailed explanation-5: -Thyroid: The thyroid (THY-royd) is in the front part of the lower neck. It’s shaped like a bow tie or butterfly.