VGO-0188
QUESTION
Most of the developmental anomalies occur during?
OPTIONS
(A) Period of embryo
(B) Period of ovum
(C) Period of foetus
(D) During birth
ANSWER
(A) Period of embryo
EXPLANATION
The embryonic period is the principal period of organogenesis, when major body structures are being established and exposure to developmental disturbances can produce structural malformations. The earlier ovum or preimplantation period more often shows an all-or-none survival response. The fetal period mainly involves growth and maturation, while birth is too late to explain most congenital structural anomalies.
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Veterinary Gynaecology and Obstetrics · 240 Questions
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