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

How does the structure of a chloroplast enable, How does the structure of a...

How does the structure of a chloroplast enable it to build up a concentration gradient of protons?  Chloroplasts have an inner membrane system having of thylakoids. The pumpin

PHYUM, HOW MANY PHYLUM OF ANIMALS?

HOW MANY PHYLUM OF ANIMALS?

Define osseointegration and its theories, Q. Define osseointegration and it...

Q. Define osseointegration and its theories? Osseointegration implies that "it is a contact established without interposition of non bony tissue between normal remodeled bone a

Endocrine glands - prostaglandins, PROS T AGLANDIN S (PGS) - Beca...

PROS T AGLANDIN S (PGS) - Because they were first found in semen (which is produced partly by the prostate gland), they were named prostaglandins. Prostaglandins are d

Complications of making a definite classification, Assume for this question...

Assume for this question that we are discussing a rare human disorder. Describe as detailed as possible the characteristics of this disorder if it is: autosomal dominant autosomal

Respiratory system, whats the difference in respiratory system in mammals,r...

whats the difference in respiratory system in mammals,reptilia and amphibian?

Explain about the pregnancy and obesity, Explain the Pregnancy and Obesity?...

Explain the Pregnancy and Obesity? Obesity is associated with increased risk for gestational diabetes, hypertension, pre- eclampsia, perinatal mortality and the need for induce

Difference between temporal summation and spatial summation, Q. What is the...

Q. What is the difference between temporal summation and spatial summation of muscle fibers? What is tetany?   Spatial summation is the recruiting of new muscle fibers to incr

Define uses of microbes in industry, Normal 0 false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain about the hypokalemia, Explain about the Hypokalemia? Normal s...

Explain about the Hypokalemia? Normal serum K ranges from 3.5-5 mM/L. Hypokalemia or low plasma K levels can occur with a net shift of K from the plasma to the cells. This shi

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