In this article we will discuss about the meaning and classification of chordata. Meaning of Chordata: The Chordata (chorde = cord) includes well-known animals such as lampreys, fishes, amphibians, reptiles, birds and mammals. They also include protochordates such as balanoglossus, ascidia and amphioxus. All chordates possess a notochord at least for some time in their life-history. It is the notochord [...]
In this article we will discuss about the dissection and structure of garden lizard (Calotes). Hyoid Apparatus of Garden Lizards (Calotes): The hyoid apparatus of Calotes occupies the same relative position in the buccal floor as in the case of frog. Preparation: Expose the basihyal of the hyoid apparatus following the procedure adopted for frog. Anteriorly it extends up to [...]
In this article we will discuss about the dissection and structure of pigeon (Columba). 1. Hyoid Apparatus of Pigeon: Columba sp.: The hyoid apparatus occupies the same relative position as in Calotes. The components of the hyoid apparatus are bony for the most part. Preparation: Expose the basihyal in the floor of the mouth cavity. Anteriorly it reaches the base [...]