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

Explain the both sex-linked trait and a sex-influenced trait, Explain the d...

Explain the difference among a sex-linked trait and a sex-influenced trait. A sex-influenced trait is influenced by the presence of sex hormones and its genes are not situated

Write the definition of counselling, Q. Write the definition of counselling...

Q. Write the definition of counselling? Definition of counselling "A process of helping or enabling a person / persons to solve certain interpersonal, emotional problems and

Determine the uses of iron - soil, Determine the uses of Iron - Soil Ir...

Determine the uses of Iron - Soil Iron is a constituent of cytochromes, haem and non-haem enzymes. It is also essential for chlorophyll formation though is not a part of it. It

Medical and nutritional management for pectic ulcer, Q. Medical and Nutriti...

Q. Medical and Nutritional Management for pectic ulcer? To provide physiological rest and support tissue healing, treatment should be based on providing rest to the affected ar

Byproducts of low digestibility high in nitrogen, Byproducts of the food i...

Byproducts of the food industry, such as coffee residues, fruit pulp and cocoa meal are of low energy value, but are relatively high in nitrogen. In additional, animal excreta tend

What an enzyme is called, The substance that is worked on by an enzyme is c...

The substance that is worked on by an enzyme is called: a. product b. coenzyme c. substrate d. inhibitor

What is the disease caused by vitamin d deficiency, Q. What is the disease ...

Q. What is the disease caused by vitamin D deficiency? Which tissue does it affect? The lack of vitamin D causes the disease known as rickets (rachitis), characterized by bone

Excretory system of animals and human urinary system, steps in urine format...

steps in urine formation and the organs/tissues involve in such process?

Why is knowledge of chemistry necessary for study, Why is knowledge of chem...

Why is knowledge of chemistry necessary for the study of living organisms?

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