Question

The branch of embryology, which concerns with the study of abnormal embryonic development, is termed as
A. Gerontology
B. Teratology
C. Embryology
D. None of the above

Answer 1

Hint: There are several different ways in which there can be developmental defects. Genetic (inherited), environmental (maternal), and idiopathic (unknown, not determined) derived anomalies are the three main forms. There are distortions at the molecular level known as inborn metabolism errors, in addition to apparent congenital abnormality.

Complete answer:
Gerontology is the study of the elements of aging that are social, psychological, and biological. Embryology is the learning of an embryo’s development.
Teratology is the study of the causes and patterns of abnormal development...
Teratology deals with all characteristics of irregular embryo production and growth (embryogenesis) and their end products. The frequency of faulty growth is high. One in 14 infants surviving the neonatal phase has an abnormality of some kind and degree, and more than one malformation occurs in half of these infants. There are more numerous internal, hidden defects than external ones, and certain defects are not evident until childhood.
One of every 40 infants were born with a structural defect that requires care. Pyloric stenosis, the narrowing of the opening between the stomach and intestine, and dislocated hip are several types of abnormality.
So, the correct answer is “Option B”.

Note:
There appear to be many ways in which sensitive embryonic cells may be infected by teratogenic agents. When penetration happens in the first trimester, these agents are the most toxic to the developing embryo. As soon as 10 to 14 days after pregnancy, adverse effects will start to set in. Teratogen toxicity findings range from prenatal development restriction, central nervous system functional defects, and fetal structural abnormalities to miscarriage or fetal death in extreme cases.