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

Explain sialography, Question 1 Explain Sialography? How will you perfo...

Question 1 Explain Sialography? How will you perform the same? Question 2 How will you set up your radiology department to take up the IVU studies? Question 3 D

Submerged stage - hydrarch, Submerged Stage - Hydrarch This habitat wh...

Submerged Stage - Hydrarch This habitat which is now shallower and is richer in nutrients and where light is available up to a certain depth, becomes suitable for the growth o

Adolescence, ADOLESCENC E  - It is the period of growth from the onset ...

ADOLESCENC E  - It is the period of growth from the onset of puberty to the completion of growth & maturity. It extends between 12- 20 yrs. It is a period of rapid physical

Transport with the help of membrane protein, Transport with the Help of Mem...

Transport with the Help of Membrane Protein Even though, the lipid bilayers do not permit the entry of polar molecules such as ions, sugars, amino acids, nucleotides and cell

How the body gets rid of dust which enters the lungs, Using the words 'cili...

Using the words 'cilia' and 'mucus', describe, very briefly, how the body gets rid of dust which enters the lungs. The lining of the air passages makes mucus which traps dust p

National health service systems, Normal 0 false false false...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain about the food analysis and chemistry, Explain about the Food analy...

Explain about the Food analysis and chemistry? Investigation of the basic composition and physical, organic and biochemical properties of food constituents at the molecular lev

Concept of reproductive isolation and the concept of species, What is the r...

What is the relationship between the concept of reproductive isolation and the concept of species? The Reproductive isolation is an important concept because it defines the con

Mode of nurition, What mode of nutrition did lizard exihbite

What mode of nutrition did lizard exihbite

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