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

Rehabilitation of cardiac surgical patients, REHABILITATION OF CARDIAC SURG...

REHABILITATION OF CARDIAC SURGICAL PATIENTS The goal of nursing care of cardiac surgical patient is to make the patient to come back to his normal activities. Cardiac surgica

Tagmatization, sample assignment on tagmatizatio

sample assignment on tagmatizatio

Determine about the manganese, Determine about the Manganese   Manganes...

Determine about the Manganese   Manganese performs some functions in photosynthesis and acts to regulate the intake of certain elements and their oxidation states.   Several cr

Name the foods allowed in soft diet, Which Foods allowed in soft diet:- ...

Which Foods allowed in soft diet:- Soups - mildly flavoured -  broths and cream soups. Beverages -  all Meat -  moist, tender meat, fish or chicken, cottage cheese, eggs

Investigation of aortic regurgitation by electrocardiogram, Q. Investigatio...

Q. Investigation of aortic regurgitation by Electrocardiogram? Electrocardiogram shows left ventricular dominance with voltage criteria for left ventricular hypertrophy. In mod

What are the four types of weak bonds, What are the four types of weak bond...

What are the four types of weak bonds, and how do they differ from each other and from covalent bonds?

Explain about the sucralose - artificial sweeteners, Explain about the Sucr...

Explain about the Sucralose - artificial sweeteners? Sucralose (1, 6-dichloro-1, 6-dideoxy-β-D-fructofuranosyl-4-chloro-4-deoxy-α-D- galactopyranoside) is the only non-nutritiv

Which are mineral salts, Q. Which are mineral salts? Where in living beings...

Q. Which are mineral salts? Where in living beings can found mineral salts? Mineral salts are simple inorganic substances made of metallic chemical elements, like sodium, iron,

Two main pollutants that contribute to acid rain, (a) What are the two main...

(a) What are the two main pollutants that contribute to acid rain? (b) Where do these pollutants come from? (c) What direct or indirect effect is 'acid rain

How do the repairing enzymes of the genetic system act, How do the repairin...

How do the repairing enzymes of the genetic system act? There are enzymes inside the cells that detect errors or alterations in DNA molecules and begin a repair of those errors

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