GROSS ANATOMY

Detailed explanation-1: -At the cellular level, both neurons and astrocytes/oligodendrocytes are derived from the common multipotent neuroepithelial cells that line the cerebral ventricles (Davis and Temple, 1994).

Detailed explanation-2: -The Nervous System The central nervous system is made up of the brain, its cranial nerves and the spinal cord.

Detailed explanation-3: -Brain tissue is composed of neuronal, glial and endothelial cells, and although there must be biological rules that determine the numbers of cells of each subtype and the volumes (or masses) occupied by them, little is known about such rules, if they indeed exist.

Detailed explanation-4: -The brain can be divided into three basic units: the forebrain, the midbrain, and the hindbrain. The hindbrain includes the upper part of the spinal cord, the brain stem, and a wrinkled ball of tissue called the cerebellum. The hindbrain controls the body’s vital functions such as respiration and heart rate.