Topographical and Morphometrical Observations on the Developing Heart of Chabro Chick Embryos

Abstract

The topographic and morphometric study was conducted on heart of 42 Chabro chick embryos ranging in age from 1-21 days with two chicks of each day of incubation; divided into 3 age groups viz; group I-IV with 14 chicks in each age group. A curved tubular heart located caudal to the prosencephalon in front of cervical flexure on second day became cone-shaped. By 14th day the heart occupied its definitive (adult type) position in the thoracic cavity. Morphometric data generated on different aspects was analysed. All these parameters showed a progressive growth with advancement in the age of embryo but maximum growth of heart occurred in the embryos of the third age group.