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!
What is Oogenesis ?
The female sex cells, or eggs, are formed in the ovaries, the primary sex organs of the female. The precursor of the egg cells, or oogonia, are formed during the prenatal development of the ovaries in the female embryo. However, the oogonia do not increase in number until after the third month of fetal development.
Oogonia divide by mitosis to form primary oocytes. These cells gradually die off, but about 200,000 are left in each ovary at puberty (about 11 to 14 years of age). Over the course of a woman's reproductive life, only about 450 oocytes will mature completely into eggs.
The primary oocyte begins meiosis, undergoing a very unequal division in which the larger cell becomes a secondary oocyte, and the other forms the first polar body, which eventually dies off. The second meiotic division, also unequal, forms a haploid ootid and a second polar body that also dies off. What is left is a single haploid egg cell or ovum (plural ova) that is 75,000 times larger than a sperm cell. The ovum contains contains proteins, lipids, and other raw materials for development. It is thought that the reason 3 of the 4 cells that result from meiosis die off is to provide the one surviving egg with sufficient resources for development.
Location of Overgloves - taped to the sides of the mobile cabinets for procedures such as patient examination and charting during non-aerosol producing procedures - on the p
Is viruses classified as living organism? If yes/no why
The metabolism of phenylalanine will now be taken in some detail, as two inborn errors of metabolism are known which affect this pathway. The Phenylalanine is 1st hydroxylated by p
Explain the Gomez classification? It will be of interest to you to learn that in Mexico, a child specialist named Gomez and his co-workers proposed a classification expressing
Explain Cardiopulmonary Resuscitation? The heart rhythm associated with cardiac arrest can be either ventricular fibrillation/ ventricular tachycardia (VT/VF) or other rhythms
Explain carbon and oxygen aspect of using phase rule? Consider a system containing solid carbon (graphite) and a gaseous mixture of O 2 , CO, and CO 2 . There are four species
What are the factors that for influencing photosynthesis also interfere with the gross primary productivity? Mostly water and light, but also mineral salts, temperature and car
Procaryotic Structure and Diversity The first organisms which did not have well defined nucleus, called procaryotes, (pro = earlier, caryon = nucleus) were probably anaerobic a
Exercise- Heat Production During physical activity heat production by exercise can to some extent substitute for heat generated by shivering. However, exercise also tends to
Define Cercaria Larva? Cercaria larva is the fourth larval stage in the life-cycle of F, hepatica. It is a free living stage produced by the redia larva. 1. It has
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