Archive | Amphibians

Difference between Arteries, Veins and Capillaries | Amphibians

The upcoming discussion will update you about the difference between arteries, veins and capillaries. Difference # Arteries: 1. Tunica adventitia: Moderately deve­loped 2. Tunica media: Thick and well-developed. 3. Tunica interna: Elastic fibres are pre­sent. 4. Elasticity: Highly elastic. 5. Lumen: Proportionately sma­ller in diameter. Difference # Veins: 1. Tunica adventitia: Thicker 2. Tunica media: Thinner 3. Tunica interna: Elastic [...]

By |2016-07-22T08:09:32+00:00July 22, 2016|Amphibians|Comments Off on Difference between Arteries, Veins and Capillaries | Amphibians
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Pademorphosis: Meaning and Types | Amphibians

In this article we will discuss about the meaning and types of pademorphosis. Meaning of Paedomorphosis: The phenomenon of attainment of sexual maturity leading to reproduction in an arrested larval stage (pre-adult stage) is called Paedogenesis (Gk. pais; child; morphe form). The term first used by Von Baer (1866). Neoteny (Gk. neos, young, teinein, to stretch), a term first introduced [...]

By |2016-07-22T08:09:31+00:00July 22, 2016|Amphibians|Comments Off on Pademorphosis: Meaning and Types | Amphibians
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15 Main Types of Amphibians (With Diagram)

The following points highlight the fifteen main types of amphibians. The types are: 1. Giant Salamander (Family Cryptobranchidae) 2. Cryptobranchus (Family Cryptobranchidae) 3. Necturus (Family Proteidae) 4. Proteus (Family Proteidae) 5. Siren (Family Sirenidae) 6. Amphiuma (Family Amphiumidae) 7. Ambystoma (Family Ambystomatidae) 8. Triturus (Family Salamandridae) and Others. Type # 1. Giant Salamander (Family Cryptobranchidae): Megalobatrachus (Fig. 7.29A) is a [...]

By |2016-07-22T08:09:31+00:00July 22, 2016|Amphibians|Comments Off on 15 Main Types of Amphibians (With Diagram)
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