Embryonic membranes, Biology

Assignment Help:

EMBRYONIC MEMBRANES -

Such animals are called amniota. Embronic membranes are of 4 types -

(i) Yolk sac -

It is formed below the embryo. It contains fluid (no yolk)

It is double layered, made up of outer mesoderm and inner endoderm. First organ to form R.B.C.

(ii) Amnion -

It encloses a fluid filled space amniotic cavity. It surrounds complete embryo.

The embryo is suspended in the amniotic cavity by an umbilical cord.

The main b.v. from the placenta reach the foetus through the umbilical cord.

Amniotic fluid is derived from the foetal kidneys & bladder i.e. it is foetal urine.

Amniocentosis is method to detect sex of foetus & chromosomal defects.

(iii) Allentoise -

A small sac., consists of endoderm inside & mesoderm outside. It is excretory in nature, stores nitrogenous waste.

977_embryonic membrane.png

391_embryonic membrane1.png

(iv) Chorion -

It completely surrounds embryo, outerly made up of ectoderm & inner of mesoderm.


Related Discussions:- Embryonic membranes

What are the habits effect on implant, Habits: Any abnormal habits need...

Habits: Any abnormal habits needs to be identified. Following habits may have detrimental effect on the implant: 1. Parafunction -  Bruxism/ Clenching 2. Tongue Thrusting

Historical example of management of renewable resources, Define Historical ...

Define Historical example of management of renewable resources? There are fundamental and well developed applications of mathematical and quantitative approaches to the managem

Supportive evidence - erythema marginatum, Minor Criteria These are arth...

Minor Criteria These are arthralgia, fever, prolonged PR interval, raised ESR and C-reactive protein levels. In some cases abdominal pain and epistaxis may occur. Other non spec

Male reproductive disorders-blockage of ducts, Blockage of ducts In so...

Blockage of ducts In some bulls there is a blockage of the transport of sperm through the epidydimis usually caused by a congenital non-patency of some part of the vasa effere

Define reagent required and methodology for barfoed test, Define reagent re...

Define reagent required and methodology for Barfoed Test? Reagents - Solutions of glucose, fructose, galactose, lactose, maltose, sucrose and starch - Barfoed's reagent

Assigment, describe food procurement and digestion in ciliates.

describe food procurement and digestion in ciliates.

Genetics, Explain the difference between meiosos and mitosis

Explain the difference between meiosos and mitosis

Which chemical causes tooth destruction, The bacteria that cause dental cav...

The bacteria that cause dental cavities in humans break down sugars, releasing what chemical which causes tooth destruction? a) Acids b) Bases c) Enzymes d) Monosaccha

Kingdom, how many kingdom and phylum are there?

how many kingdom and phylum are there?

What is mitochondria , What is Mitochondria ? Mitochondria are the cell...

What is Mitochondria ? Mitochondria are the cellular organelles responsible for the conversion of energy into a form called ATP. ATP is a high energy chemical compound that cel

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