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प्रश्न
Define spermiation.
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उत्तर १
Spermiation is the process of releasing mature spermatozoa. In this, spermatozoa are shed into the lumen of the seminiferous tubule for transport.
उत्तर २
After spermiogenesis, sperm heads become embeded in sertoli cells from which they obtain their nutrition and finally get released into the lumen of seminiferous tubules. This process of release of mature sperms from sertoli cells is called spermiation.
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संबंधित प्रश्न
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Male and female gametes are ______.
Which precautions will you follow to maintain the reproductive health?
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
Give a schematic representation of spermatogenesis and oogenesis in humans.
Expand the acronym.
hCG
Identify the diploid cell.
Formation of ____________ is an indication of the termination of oogenesis.
500 spermatozoa are formed from ____________ secondary spermatocytes.
Which is the correct order of steps occurring during spermatogenesis?
Which of the following is diploid?
The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.
Choose the correct one with reference to the above.
Corona radia is made up of ______.
The cell which undergoes meiosis I during spermatogenesis is the ______.
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
Cells of corona radiata remain grouped together by ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
The head of the epididymis at the head of the testis is called ______.
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Follicular atresia is:
In human females, meiosis II is not completed until:
What is the difference between a primary oocyte and a secondary oocyte?
Which type of cell division forms spermatids from the secondary spermatocytes?
Process of maturation and development of sperms ______.
Distinguish between human sperm and ovum.
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
Which gamete is produced through oogenesis?
