Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Primary Egg Envelopes
These are the egg envelopes which develop in the ovary between oocyte and follicle cells in the space occupied by the interdigitating microvilli. Such envelopes have been named variously in different animals.
a) It is named as vitelline envelope or vitelline membrane in insects, molluscs, amphibians and birds.
b) In tunicates and fishes, it is known as chorion. In many sharks and bony fishes the primary envelope has striated appearance and is referred to as zona radiata representing the degraded microvilli of the growing oocyte. The perforation in the zona radiata becomes the micropyle through which the spermatozoa can enter the egg.
c) In mammals, the unstriated and modified zona pellucida is formed as a result of joint efforts of egg and follicle cells. While escaping the Graafian follicle mammalian oocyte carries on the surface of zona pellucida a layer of follicle cells known as corona radiata. The primary envelopes usually stick closely to the egg surface. These later on participate in the formation of fertilization membrane.
Define Resistant Starch From the physiological perspective? RS is defined as the sum of starch and products of starch degradation not absorbed in the small intestine of healthy
Q. Show basic Classification of hypertension? Unlike many other diseases, hypertension develops insidiously (without symptoms). In 90% of hypertension cases, the cause is unkn
What are typical structures of the seed? What is the endosperm? A typical seed is the composed of the embryo, endosperm and shell. Inside seeds of angiosperms there are one or
What are pleura, pericardium and peritoneum? Pleura are the membrane that hides the lungs and the inner wall of the chest; pericardium is the membrane that hides the heart; per
β - Pleated Sheets In this inter molecular hydrogen bonds are present Two or more polypeptide chains come together and from a sheet. Condensation in little. However
Define Needle selection for Suturing 1. Needle with a reverse cutting edge "the cutting edge is outside the curve" is preferable, because it prevents tearing, 2. Conventiona
Tabulate macro & micro nutrients on the basis of -elements, source, synthesis site, symptoms
Give the results of DistaE Dissection ? Results : For acute dissection of different parts of aorta, the mortality is reported as 9 to 33 per cent. In the International Regis
Why is pattern baldness more common in men than in women? Pattern baldness is handled by the allele B. Testosterone interacts with the heterozygous genotype (BB′) to make baldn
Define Fluids requirement to avoid underweight problem? Take fluids only after a meal instead of with or before meals so that food intake is not reduced. High calorie nourishin
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd