Write a brief account of the structure and function of placenta?
class 12th CBSE Biology sample paper
Answers
Answered by
2
Placenta consist of fetal part, the villi and maternal part, the uterine mucosa.
.
The main blood vesses from the placenta reach the fetus through the umbilical cord.
.
Through placenta, embryo obtains nutrients and oxygen and get rid of carbon dioxide and wastes or we can say that placenta serves the passage of circulation between maternal tissues and foetus.
.
Placenta also as an endocrine gland.
the hormone secreted by placenta is Placental Lactogen.'
This is related to Prolactin and Growth hormone, and is produced by the placenta and uterus it Promotes growth and differentiation of mammary tissue. Identified in primates, ruminants and rodents.
Similar questions