Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Testis of Non-Mammalian Vertebrates
The testis of non-mammalian vertebrates is also made up of tubules. The tubules contairi nest of cells which undergo spermatogenesis asynchronously. Each nest of cells is called, a cyst, which contains germ cells of the same stage of differentiation. For example in a tubule there may be cysts of spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids and spermatozoa. In the breeding season testis lobules contain maximum number of cysts of spermatozoa and also the spermatozoa released into the lumen of the tubule. During the non-breeding season there are more number of cysts of spermatogonia and spermatocytes. You have studied earlier in this section that in mammalian testis the interspaces between the seminiferous tubules is occupied by Leydig cells. In the testis of non-mammalian vertebrates the interspaces between the tubules is occupied by the lobule boundary cells; These are homologous to the Leydig cells and apparently have the same endocrine function.
Figure : Testis of Non-Mammalian Vertebrates
What are the benefits of plant-incorporated protectants? Plant-incorporated protectants can be a promising pest management alternative where traditional pesticides may not be a
Q. Qualitative and Quantitative Analysis of Colour? Primarily, two types of analysis are carried out for food colours - qualitative and quantitative. The qualitative analysi
Q. What are the pancreatic tissues involved respectively in the endocrine and exocrine secretions? What are their respective hormones and enzymes? The exocrine secretion of the
site of fertilistion in human
Assume you were given a mixture consisting of one molecule each of all possible sequences of a smallish protein of molecular weight 4800 daltons. If the average molecular weight of
Bronchiectasis: Bronchiectasis literally means abnormal dilation of bronchi. It is a chronic inflammatory condition which is characterised by permanent dilation of bronchi a
Anomalies Related to Oral Cavity Under these anomalies we will briefly discuss the cleft lip and cleft palate. You must have seen and/or nursed a baby born with a cut on
Explain the repair mechanisms of brain Scientists are just beginning to understand how these innate repair mechanisms might be harnessed to treat disease. On leading edge of th
what is the scientific explanation of "touch me not" plant that can react due to any touch
What were coopers views on nature (particularly in regard to human progress and resource use)? And Is there any thought about rights of nature or conservation of resources in her w
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd