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Seminiferous tubules

 

 
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Seminiferous tubules
 
 
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Seminiferous tubules are located in the testicle
Testicle

The testicle is the male gonad in animals. This article will concentrate on mammalian testicles unless otherwise noted.The etymology of the word is somewhat colorfully based on Roman law....
s, and are the specific location of meiosis
Meiosis

In biology or life science, meiosis is a process of reductional division in which the number of chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, while in other organisms it can give rise to spores....
, and the subsequent creation of gametes
Gamete

A gamete is a Cell that fuses with another gamete during fertilization in organisms that sexual reproduction. In species which produce two morphologically distinct types of gametes, and in which each individual produces only one type, a female is any individual which produces the larger type of gamete?called an ovum ?and a male produces th...
, namely spermatozoa.

The epithelium
Epithelium

In biology and medicine, epithelium is a Biological tissue composed of cell s that line the cavities and surfaces of structures throughout the body....
 of the tubule consists of sustentacular or Sertoli cell
Sertoli cell

A Sertoli cell is a 'nurse' cell of the testicle which is part of a seminiferous tubule.It is activated by follicle-stimulating hormone, and has FSH-receptor on its membranes....
s, which are tall, columnar type cells that line the tubule.

In between the Sertoli cells are spermatogenic cells, which differentiate through meiosis
Meiosis

In biology or life science, meiosis is a process of reductional division in which the number of chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, while in other organisms it can give rise to spores....
 to sperm cells
Spermatozoon

A sperm, from the ancient Greek word sp???a and and more commonly known as a sperm cell, is the ploidy cell that is the male gamete. It Fertilization an ovum to form a zygote....
.

There are two types: convoluted and straight.






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Seminiferous tubules are located in the testicle
Testicle

The testicle is the male gonad in animals. This article will concentrate on mammalian testicles unless otherwise noted.The etymology of the word is somewhat colorfully based on Roman law....
s, and are the specific location of meiosis
Meiosis

In biology or life science, meiosis is a process of reductional division in which the number of chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, while in other organisms it can give rise to spores....
, and the subsequent creation of gametes
Gamete

A gamete is a Cell that fuses with another gamete during fertilization in organisms that sexual reproduction. In species which produce two morphologically distinct types of gametes, and in which each individual produces only one type, a female is any individual which produces the larger type of gamete?called an ovum ?and a male produces th...
, namely spermatozoa.

The epithelium
Epithelium

In biology and medicine, epithelium is a Biological tissue composed of cell s that line the cavities and surfaces of structures throughout the body....
 of the tubule consists of sustentacular or Sertoli cell
Sertoli cell

A Sertoli cell is a 'nurse' cell of the testicle which is part of a seminiferous tubule.It is activated by follicle-stimulating hormone, and has FSH-receptor on its membranes....
s, which are tall, columnar type cells that line the tubule.

In between the Sertoli cells are spermatogenic cells, which differentiate through meiosis
Meiosis

In biology or life science, meiosis is a process of reductional division in which the number of chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, while in other organisms it can give rise to spores....
 to sperm cells
Spermatozoon

A sperm, from the ancient Greek word sp???a and and more commonly known as a sperm cell, is the ploidy cell that is the male gamete. It Fertilization an ovum to form a zygote....
.

There are two types: convoluted and straight. convuluted towards the lateral side and straight as the tubule comes medially to form ducts which will exit the testis.

See also

  • Leydig cell
    Leydig cell

    Leydig cells, also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testes. They can secrete testosterone and are often closely related to nerves....
    s


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