What happens when the ovum is fertilized, Biology

Assignment Help:

What happens when the ovum is fertilized?

If the ovum is fertilized, there is no breakdown of endometrium and no menstrual flow. The fertilized ovum travels through uterine tube to the uterus where it becomes embedded in the wall and produces chorion gonadotrophins. This keeps corpus luteum intact enabling it to continue to secrete progesterone for the first 3-4 months of pregnancy, inhibiting the maturation of ovarian follicles. During that time, placenta develops and produces oestrogen, progesterone and gonadotrophins. The placenta provides an indirect link between the circulation of the mother and that of the foetus. Through the placenta, the foetus obtains maturational materials, O2, antibodies and gets rid of CO2 and other waste products.


Related Discussions:- What happens when the ovum is fertilized

Define about calcium and osteoporosis, Define about Calcium and Osteoporosi...

Define about Calcium and Osteoporosis? Gain in bone mass occurs throughout childhood; however, during adolescent growth spurt, the gain in bone mass, as well as, calcium retent

Phylum platyhelminthes, distinguishing characteristics of phylum platyhelmi...

distinguishing characteristics of phylum platyhelminthes?

Quantitative or analytical method for estimation of nitrogen, Define Quanti...

Define Quantitative or Analytical Method for Estimation of Nitrogen and Protein? You may recall reading earlier that proteins contain nitrogen along with carbon, hydrogen and s

Endocrine glands - kidney, KIDNEY S - Origin . They develop from the ...

KIDNEY S - Origin . They develop from the mesoderm of the embryo. The kidneys secrete three hormones: renin, erythropoetin and calcitriol. (i) Renin . Whenever the rat

Define methods of prevention and control of anaemia, Define methods of prev...

Define methods of prevention and control of anaemia? The available methods of prevention and control of anaemia are: Supplementation Food fortification Dietary

Describe class holothuroidea in details, Describe Class Holothuroidea in de...

Describe Class Holothuroidea in details? Members of this Class resemble soft and squishy cucumbers lying on their sides on the bottom of the sea. On first glance, they appear n

Explain some weight loss during breastfeeding, Explain some Weight Loss dur...

Explain some Weight Loss during breastfeeding? Some women may want to return quickly to their pre-pregnancy weight. It is important to remember that some women will lose more,

Dietary modification, Q. Dietary modification? Dietary modification inc...

Q. Dietary modification? Dietary modification includes nutritional support that allows normal growth and development. Plasma phenylalanine concentration between the range of 40

Evolution of the cell, EVOLUTION OF THE CELL All the living organisms a...

EVOLUTION OF THE CELL All the living organisms are made up of cells. A living cell may be defined as a compartment enclosed by a membrane that consists of several chemical cons

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd