Tag Archives | Chordates

Skin of Vertebrates: Structure, Embryonic Origin and Functions

In this article we will discuss about:- 1. General Structure of Skin 2. Embryonic Origin of Skin 3. Functions. General Structure of Skin: The outermost surface is the epidermis. The epidermis lies on the basement membrane (basal lamina or reticular lamina) as a characteristic feature (Fig. 2.1). Below the basement membrane lies the dermis. The epidermis develops from ectoderm and [...]

By |2016-10-20T08:57:23+00:00October 20, 2016|Vertebrates|Comments Off on Skin of Vertebrates: Structure, Embryonic Origin and Functions

Integument of Various Chordates | Zoology

In this article we will discuss about the integument of various chordates:- 1. Fishes 2. Amphibians 3. Reptiles 4. Birds. 1. Fishes: In bony fishes, dermal scales do not actually pierce the epidermis, but they are so close to the surface they give the impression that the skin is hard (Fig. 2.4). The epidermal covering includes a basal layer of [...]

By |2016-10-20T08:57:23+00:00October 20, 2016|Chordatess|Comments Off on Integument of Various Chordates | Zoology

Venom of Snakes (With Diagram) | Zoology

In this article we will discus about:- 1. Nature of Venom 2. Effects of Poison 3. Anti-Snake Venom Serum 4. Poison Apparatus and Biting Mechanism 5. Ligaments and Muscles of Snakes 6. Transference of Venom. Nature of Venom: It is a kind of highly evolved saliva which the snake uses to both kill as well as digest its prey. There [...]

By |2016-10-20T08:57:23+00:00October 20, 2016|Snakes|Comments Off on Venom of Snakes (With Diagram) | Zoology