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

Origin of cell wall, Origin of Cell Wall - The cell wall is product ...

Origin of Cell Wall - The cell wall is product of cytoplasm. The cytoplasmic organelles such as endoplasmic reticulum, golgi apparatus play a very important role in the f

Natural selection would lead to the spread of favorable, If jean-Baptiste d...

If jean-Baptiste de Lamarck was correct, than a. Natural selection would lead to the spread of favorable traits within a population b. Finches that stretched their beaks to access

What is bioremediation, What is bioremediation? Bioremediation is the u...

What is bioremediation? Bioremediation is the use of microorganisms, as bacteria, protists and fungi, to degrade noxious substances turning them into non toxic or less toxic su

Observing root hairs, Observing root hairs Study the root hairs with a ...

Observing root hairs Study the root hairs with a hand lens and view how they are constructed.

Endoscopy, E n d o scopy (Greek: endon, within; skopion, to loo...

E n d o scopy (Greek: endon, within; skopion, to look at) Endoscope, a tubular instrument, is used to examine interior of body cavity or a hollow organ.  Besides e

Electrophoresis gel to load 60, Assume your tilapia fish muscle homogenate ...

Assume your tilapia fish muscle homogenate has a protein concentration of 5769 ?g/ml. You take 32.5 ?l of this fish homogenate, mix it with 12.5 ?l sample buffer and 5 ?l reducing

Community, COMMUNITY If you look around yourself you will notice that pop...

COMMUNITY If you look around yourself you will notice that populations of plants and animals seldom occur by themselves. The reason for this is quite obvious. In order to survive

Meat snack products, S n a c k Products Meat snacks such as curls; ...

S n a c k Products Meat snacks such as curls; chips are made from sliced, whole meat and comminuted meat. Extruded snacks are made from meat and non meat ingredients. Extru

Mendel''s second law not for two or more phenotypical traits, Why is not Me...

Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? The Mendel's second law, or the law of the independent assortment, is valid fo

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