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

What are the apical meristems, What are the apical meristems? Which kind of...

What are the apical meristems? Which kind of plant growth does this meristem promote? The Apical meristems are those primary meristems found in the apex of the stem as well as

Calculate concentration of solution from standard curve, Calculate the Conc...

Calculate the Concentration of Unknown Solution from Standard Curve? i) First take different volume of standard solution (say 0.2, 0.4, 0.6, 0.8, 1.0 ml) and then calculate the

What is difficult breathing, What is difficult breathing? Difficult Bre...

What is difficult breathing? Difficult Breathing: Tachypnea (respiratory rates consistently more than 451 min), is a characteristic manifestation of heart failure in newborns (

Define requirements of vitamin a for infants, Define requirements of Vitami...

Define requirements of Vitamin A for infants? As for vitamin A deficiency, requirement of vitamin A is the most easy to meet as it is abundantly present in green and yellow veg

Asymmetrical and spherical - metazoa, Asymmetrical and Spherical - Metazoa ...

Asymmetrical and Spherical - Metazoa Some creatures are asymmetrical: no matter which way we try to divide them through the middle, no two halves would appear alike. In simple

Explain chymotrypsin, Chymotrypsin Chymotrypsin  is secreted in an ina...

Chymotrypsin Chymotrypsin  is secreted in an inactive form  'chymotrypsinogen',  which  is activated by  trypsin. Chymotrypsin  is specific  for  peptide  bonds containing unc

Excretion in amoeba, EXCRETIO N IN AMOEBA - NH 3  is excreted out t...

EXCRETIO N IN AMOEBA - NH 3  is excreted out through plasmalemma. Osmoregulation takes place by contractile vacoule, generally one, towards posterior end, contractile in

Explain carbonating - method of food preservation, Explain Carbonating - me...

Explain Carbonating - method of food preservation? Carbonated water is the water in which carbon dioxide gas has been dissolved under pressure. By eliminating oxygen, carbonate

Explain law of segregation, Which of the below terms laws best describes th...

Which of the below terms laws best describes the statement: Members of a homologous (pron: ho-MOL-eh-gus) pair of genes are separated at the time of meiosis (pron: my-O-sis) o

Mycotoxicoses, Mycotoxicoses Mycotoxicoses cause heavy economic loss d...

Mycotoxicoses Mycotoxicoses cause heavy economic loss due to high morbidity and consequent production loss. Low grade mortality is also recorded. The main toxins involved are

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