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

Describe the examination of abdomen, Describe the Examination of Abdomen ? ...

Describe the Examination of Abdomen ? The contour of abdomen is to be recorded. Normally the abdomen is scaphold in sharp in a young adult. In case of fullness and bulge presen

Define biocompatible material, Define each term and give an example of an a...

Define each term and give an example of an application that uses the following: a. Biocompatible material b. Biodegradable material c. Biomimetic

What is mendels crosses in genetics explain breifly, What is Mendel's Cross...

What is Mendel's Crosses in genetics explain breifly? Mendel found that if he transferred pollen from a green-seed strain to a yellow-seed strain and vice versa, in a process c

What is plutonium reprocessing, Q. What is plutonium reprocessing? Why is i...

Q. What is plutonium reprocessing? Why is it a big environmental issue? The Plutonium is the highly radioactive chemical element produced from uranium by nuclear plants. The Pl

What are the symptom of short bowel syndrome, Q. What are the Symptom of sh...

Q. What are the Symptom of short bowel syndrome? Diarrhoea is the main symptom of short bowel syndrome. Other symptoms include: • Anorexia • Steatorrhoea • Heart bum a

Darwins theory of natural selection, Darwins theory of natural selection is...

Darwins theory of natural selection is considered a paradigm shift--a theory that has wide-ranging effects. Describe some of the advantages that this theory offered scientists once

Guidelines for diabetic patients for healthy coping, Q. Guidelines for Diab...

Q. Guidelines for Diabetic Patients for Healthy Coping? Generally, a diabetic patient adapts to day to day stress effectively, as they accept their disease condition with the s

Digestion, Adsk question #Minimum 100 words accepted#saliva enzyme

Adsk question #Minimum 100 words accepted#saliva enzyme

Phylem porifera, please give us this phylem''s example...

please give us this phylem''s example...

Carbohydrates requirement during diabetes, Q. Carbohydrates requirement dur...

Q. Carbohydrates requirement during diabetes? Carbohydrates: These to a large extent depend on the food habits. Complex carbohydrates with more fibre are recommended to simple

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