Medindia » Consumer Health » Health Information » Birth Defects - Introduction - Introduction

Birth Defects - Introduction

Rating : 3.99 /5
Rate this Article:

Birth Defects - Introduction

Facebook Twitter StumbleUpon Digg Reddit DeliciusRSS Feeds   Text 
Scientists have been baffled for centuries about how the zygote, a single cell, becomes transformed into an intricately complex organism with many different types of cells, tissues and organs. Birth defects have been very crucial in providing at least some answers regarding human development and function.

Following fertilization in the upper part of the fallopian tube, the zygote continues to divide; the mass of dividing cells is now called the blastocyst. After floating free for about two days, the blastocyst attaches itself to and begins to burrow into the spongy lining of the uterus. The embryo is now dependent on the mother's blood supply for its nourishment and development. The implantation into the uterus is complete by the end of the second week.


birth defects

By the third week, the preliminary neural tissue continues to develop into the neural tube that gives rise to the brain and spinal cord during later stages of development. The cardiovascular system is one of the first functional systems to be developed. It links the embryo with specialized tissue, the placenta that provides a channel for exchange of nutrients and waste materials between the mother and the embryo. In addition, it produces hormones that maintain pregnancy and prevent menstruation.
Advertisement

EmailEmail RSS FeedsRSS Feeds Print this pagePrint Save this pageSave LinkLink SyndicateSyndicate
Share it!

Related Links

Birth Defect - Genetic


Achondroplasia is a genetic disorder which is one of the leading causes of dwarfism ...

Birth Defects - Infections


Birth defects are abnormalities, which occur before the birth of the baby and can be caused due to genetic, environmental and other unknown ...

Metabolic Defects


Metabolism is the sum total of all chemical and physical changes that take place in any organism that enables it to function and ...

Multifactorial Birth Defects


Encyclopedia section of medindia gives in brief General Info about About Multifactorial Birth ...

Environmental Birth Defects


Birth defects caused due to environmental teratogens like drugs, microorganisms or exposure to radiation are called as environmental birth ...

Birth Defect - Structural Defects


A structural birth defect means that a specific body part is missing or mal-formed during the embryonic ...
Comment & Contribute
Comments should be on the topic and should not be abusive. Comments are normally moderated and are reviewed after they are posted.
* Your comment can be maximum of 2500 characters

Notify me when reply is posted
I agree to the terms and conditions
  
If you have a question about health related issues, you can now post it in our Ask An Expert section on our community website Medwonders.com and get answers from our panel of experts.
X
Citing this Health Article
The information on Medindia is factual, unbiased and authentic. If you find the content useful - PLEASE INCLUDE A LINK TO THIS PAGE.

Highlight the text, right-click, and select “copy”. Paste the link into your website, email, or any other HTML document.