Dictionary > Convoluted seminiferous tubule

Convoluted seminiferous tubule

Definition
noun, plural: convoluted seminiferous tubules
Any of the convoluted or curved canals of the seminiferous tubules in each lobule of the testis, and where spermatogenesis occurs
Supplement
The animal male gonad, called testicle or testis, is enclosed in a capsule referred to as tunica albuginea. Under the tunica albuginea, the testis contains threadlike coiled tubes referred to as the seminiferous tubules. These tubules have an epithelial lining that consists of the Sertoli cells and spermatogenic cells. The spermatogenic cells give rise to spermatozoa (the male gamete). The Sertoli cells are columnar cells in the epithelial lining that provide nourishment to the developing spermatozoa. The seminiferous tubules are comprised of two parts, the convoluted seminiferous tubules and the straight seminiferous tubules.
One of the differences between the convoluted and the straight seminiferous tubules is their appearance. The convoluted seminiferous tubules are twisted curved tubules whereas the straight seminiferous tubules (as the name implies) are the short straight passageways between the convoluted seminiferous tubules and rete testis. Another difference is their function. The convoluted seminiferous tubules are that part involved in the production of spermatozoa and therefore the site of spermatogenesis. Sperm cells are produced here. The spermatogenic cells undergo the process of meiosis. The straight seminiferous tubules, in contrast, do not produce spermatozoa. Rather, they serve as a passageway for the sperm cells produced in the convoluted seminiferous tubule into the rete testis.
Synonym(s):

  • tubulus seminifer contortus
  • tubulus contortus

Compare:

  • straight seminiferous tubule
  • See also:


    You will also like...

    dinosaurs
    The Dinosaurs

    Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

    An artist depiction of a Precambrian multicellular life form.
    The Evolution of Cell Organelles

    The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..

    Salmon jumping upstream in the river
    Lotic Communities & Animals

    A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

    green leaf - close up view
    Leaves

    Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

    Schematic diagram of bacterial lactose operon
    Gene Action – Operon Hypothesis

    Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

    ..

    Non-Mendelian Inheritance
    Non-Mendelian Inheritance

    In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..