Advertisements
Advertisements
Question
Define spermiation.
Advertisements
Solution 1
Spermiation is the process of releasing mature spermatozoa. In this, spermatozoa are shed into the lumen of the seminiferous tubule for transport.
Solution 2
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.
APPEARS IN
RELATED QUESTIONS
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Name the hormones involved in regulation of spermatogenesis.
Fill in the blank.
---------- type of reproduction occurs without fusion of gametes.
Describe the process of oogenesis in human female.
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
Mammalian egg is ____________.
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.
Define gametogenesis.
Which of the following are known as the nourishing cells present in the seminiferous tubules?
Identify the diploid cell.
Which of the following correctly describes the secondary oocyte?
Select the correct sequence of oogenesis.
Identify the CORRECT sequence of events.
There is no cell division involved in ______.
It The cell division in secondary oocyte is suspended at ______.
Cavity of graafian follicle is ______.
During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
Acrosome is a type of ______.
Which one is released from the ovary?
Mark the odd one.
Penetration of the sperm in the ovum is followed by ______
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
Germ cells present in the seminiferous tubules undergo ______
How many spermatozoa are formed from one secondary spermatocyte?
Meiotic division of the secondary oocyte completed ______.
Distinguish between human sperm and ovum.
