Human ovum, Biology

Assignment Help:
  • A pair of ovaries are the reproductive organs in woman.
  • They are present just below the kidneys in the abdominal cavity.
  • Each ovary has several sac like structures called ovarian follicles or Graffian follicles.
  • Each follicle has a centrally placed large cell called ovum.
  • The ovum is formed from a cell called primary oocyte.
  • When the ovum matures, the follicle ruptures and releases the ovum (haploid) into the body cavity.
  • Ovum is non-motile and is larger in size compared to spermatozoa.
  • Every time one follicle ruptures and one ovum is released.
  • The ruptured follicle is called corpus luteum and it secretes female sex hormone - oestrogen & progesterone.
  • Follicle stimulating hormone secreted by pituitary gland stimulates the growth of follicle and leutinizing hormone secreted by pituitary gland stimulates the rupture
  • of follicle and conversion of follicle in to corpus luteum.

Related Discussions:- Human ovum

Why are most ammoniotelic beings aquatic animals, Q. Why are most ammoniote...

Q. Why are most ammoniotelic beings aquatic animals? Aquatic animals like crustaceans, amphibian larvae and bony fishes generally are ammoniotelic since ammonia diffuses more e

Theory of embryology - organizer theory, ORGANIZER THEORY - It was p...

ORGANIZER THEORY - It was propounded by spemann (1901). He was given Nobel prize of 1935 for this wrok. He studied the embryonic development of frog, newt & other amph

What does a two-direction arrow show in a chemical equation, What does a tw...

What does a two-direction arrow show in a chemical equation? The oxygen atoms share two pairs of electrons, as every atom needs two more electrons to fill the orbitals of its o

Signify the term - trachea, Signify the term - Trachea Part of the resp...

Signify the term - Trachea Part of the respiratory system in insects, vertebrates and some spiders. In invertebrates it comprise tubules carrying air directly from outside to t

Cannulation-procedures of oxygenators, Cannulation :  Typically blood is d...

Cannulation :  Typically blood is drained by gravity through two cannulae inserted into the superior and inferior vena cavae. During bypass, if the SVC and IVC are snared, the ent

Which does not support evolution, Which of the following does not support e...

Which of the following does not support evolution? biogeography the fossil record comparative anatomy radiometric dating All of these choices are evidence of/support evolution.

Chlamydiosis-pathogenesis, Pathogenesis The mode of intracellular repl...

Pathogenesis The mode of intracellular replication of chlamydial agents is investigated morphologically and cytochemically with both light and electron microscope. It is estab

How much time is required for a single cell, How much time is required for ...

How much time is required for a single cell of Detoxivicatium completeium to grown into a population large enough to fill the volume of the earth?

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