Optic vesicle is spelled using the standard English alphabet and pronounced using the International Phonetic Alphabet (IPA) as [ˈɒptɪk ˈvɛsɪkəl]. The "o" sound is pronounced as the short "o" sound in "fox," and the "t" and "k" sounds are pronounced distinctly. The "i" sounds are pronounced as a short "i" in "hit," and the "c" sound is pronounced as a "k" sound. Overall, the pronunciation of "optic vesicle" can be described as opt-ick vess-ick-ul.
Optic vesicle refers to a developmental structure found in vertebrates, specifically in the early stages of eye formation. It is an important part of the embryonic process that leads to the development of the eye and its associated structures. The term "optic" in optic vesicle is derived from the Latin word "opticus," meaning related to vision or sight.
During embryogenesis, the optic vesicle arises from a part of the developing brain called the diencephalon. Initially, it appears as a pouch-like structure, which later invaginates, or folds inward, to form a hollow outgrowth. The optic vesicle then undergoes further differentiation and morphological changes to develop into different components of the eye, including the retina, lens, and other structures of the visual system.
The formation and subsequent growth of the optic vesicle are tightly regulated by a complex interplay of genetic and environmental factors. Disruptions in this process can lead to various congenital eye disorders, such as anophthalmia (absence of one or both eyes) or microphthalmia (abnormally small eyes), highlighting the critical role of the optic vesicle in normal eye development.
In summary, optic vesicle is a developmental structure that forms during embryogenesis and gives rise to the eye and its associated structures. Its formation and growth are essential for the proper development of vision in vertebrate organisms.
Ocular v.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "optic vesicle" is derived from two main sources:
1. "Optic" comes from the Latin word "opticus", which means "of sight" or "relating to the eye". It can be traced back further to the Greek word "optikos", which has a similar meaning.
2. "Vesicle" comes from the Latin word "vesicula", which means "a small bladder" or "a little sac". The term is used in biology to refer to a small fluid-filled structure or sac-like formation.
The combination of these two terms, "optic" and "vesicle", is used in embryology to describe a specific structure that develops during the early stages of eye formation in vertebrate embryos. The optic vesicle is a small sac-like structure that eventually gives rise to various important components of the eye, such as the retina and the optic nerve.