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Questions and Answers
During which gestational weeks do seminiferous tubules develop in the fetal testes?
During which gestational weeks do seminiferous tubules develop in the fetal testes?
What is the approximate number of seminiferous tubules present in each testicle?
What is the approximate number of seminiferous tubules present in each testicle?
Where are seminiferous tubules located within the male reproductive system?
Where are seminiferous tubules located within the male reproductive system?
Which cells are responsible for supporting sperm production within the seminiferous tubules?
Which cells are responsible for supporting sperm production within the seminiferous tubules?
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What is the primary function of the Sertoli cells within the seminiferous tubules?
What is the primary function of the Sertoli cells within the seminiferous tubules?
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Where do sperm undergo further maturation after being partially developed within the seminiferous tubules?
Where do sperm undergo further maturation after being partially developed within the seminiferous tubules?
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Study Notes
Seminiferous Tubules
Overview
Seminiferous tubules are integral components of the male reproductive system. Located within the testicles, these structures play a crucial role in producing sperm through the process of spermatogenesis.
Formation and Development
Seminiferous tubules develop in the fetal testes during the seventh and eighth gestational weeks, following conception. During the eighth week, they begin to produce sperm through the process of meiosis, resulting in the formation of spermatozoa.
Anatomy
Each testicle contains approximately 800 seminiferous tubules, which are arranged tightly and looped throughout the testes. These tubules are long, stretching possibly as much as a mile between the two testes. The tubules are lined with Sertoli cells, specific cells responsible for supporting sperm production. The Sertoli cells secrete proteins that increase the concentration of testosterone within the tubules, facilitating the growth and maturation of sperm.
Types of Tubules
There are two main types of seminiferous tubules: those containing immature spermatogonia and those containing mature sperm.
Maturation Process
Although sperm are partially developed within the seminiferous tubules, they undergo further maturation in the epididymis. Here, sperm develop their tails, which contribute to their motility.
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Description
Explore the anatomy, development, and functions of seminiferous tubules in the male reproductive system. Learn about the crucial role these structures play in spermatogenesis and sperm production.
