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.
Q. Cleaning efficiency of Detergents and Soaps? Soaps and detergents emulsify fats, oils and grease so that they are easily washed away. They usually contain chemical builder
What is Atrial Septal Defect ? Figure: Anatomical location of Am Indication for Surgery : The presence of an ASD or PAPVC (Partial Anomalous Pulmonary Venous Conn
Non-viral vectors Viral vectors are highly efficient but when it comes to large scale production at the commercial level, non-viral serve as a better choice. These methods p
What is Cancer? Besides AIDS, Cancer is another deadly human disease of our times about which people are panicky all over the world. It is estimated that one in every three per
Myeloid immunodeficiency causes phagocytic function, which is impaired. Those who are affected with this will undergo with enhance in susceptibility to bacterial infection.
Heparinisation : The patient should be fully heparinised before the start of cardio pulmonary bypass. Baseline activated clotting time is measured (ACT). 3 mg (300 units) per k
Cells is a Miniature Chemical Factory Due to its incessant metabolic processes, a living cell earns the attribute of a miniature chemical factory metabolites and free
Explain Diagnostic Approach to Congenital Heart Disease ? It is often easy to recognise the presence of CHD in older children and adults. As in any other form of heart disease
Q. Is it correct to consider water decomposition by the action of light the fundamental of the photosynthesis process? In addition ADP photophosphorylation, photic energy is al
Avian leucosis complex (ALC) The disease in poultry is caused by an RNA virus classified under avian type C Retrovirus group under the family Retroviridae. Epidemiology:
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