Vol. 11, Special Issue 9 (2022)

Author(s):
PG Veeresh, M Santhi Lakshmi, P Jagapathi Ramayya and S Bharathi

Abstract:
The study on “Prenatal development of Heart in Sheep (Ovis aries)” was conducted in 30 sheep prenatal specimens (embryos and foetuses) ranging from 22 days to 146 days. The specimens were divided into three age groups viz., Group I (1-50 days), Group II (51-100 days) and Group III (101-152 days). The prenatal heart was well developed grossly at 53 days with sinus venarum, pectinate muscles, foramen ovale, chordae tendineae, papillary muscles and moderator bands. Chordae tendineae showed secondary and tertiary branching at 67 days.