In this article we will discuss about:- 1. Introduction to the Development of Central Nervous System 2. Later Development of the Spinal Cord 3. Dependence in Development of Nerves and Nerve Centers on Peripheral Organs 4. Development of the Autonomic Nervous System. Introduction to the Development of Central Nervous System: The central nervous system of vertebrates develops from the primary [...]
When the epidermis is first segregated from the other parts of the ectoderm (neural plate, neural crest) during the process of neurulation, it is still a very complex rudiment. Most of it becomes the epidermis of the skin, but in addition, a number of other structures are derived from it. Some of these are – the lens, the cornea, and [...]
In this article we will discuss about the development of eyes in all vertebrates. The Optic Cup: The optic vesicles push outward until they reach the epidermis, displacing the intervening mesenchyme, so that they come into direct contact with the inner surface of the epidermis. Next, the external surface of the optic vesicle flattens out and invaginates inward, so that [...]