Tubuli seminiferi recti

Information about Tubuli seminiferi recti

Schematic drawing of testicle and epididymis. 1 Tunica albuginea, 2 Septula testis, 3 Lobulus testis, 4 Mediastinum testis, 5 Tubuli seminiferi contorti, 6 Tubuli seminiferi recti, 7 Rete testis, 8 Ductuli efferentes testis, 9 Ductus epididymidis, 10 initial part of deferent duct
1: Testicular septa
2: Convoluted seminiferous tubules
3: Testicular lobules
4: Straight seminiferous tubules
5: Efferent ductules
6: Rete testis
subject #258 1244
Dorlands/Elsevier t_22/12830126
The tubuli seminiferi recti (also known as the tubuli recti, tubulus rectus, or straight seminiferous tubules) is a structure in the testicle connecting the convoluted region of the seminiferous tubule to the rete testis, although the tubuli recti has a different appearance distinguishing it from these two structures.

They enter the fibrous tissue of the mediastinum, and pass upward and backward, forming, in their ascent, a close net-work of anastomosing tubes which are merely channels in the fibrous stroma, lined by flattened epithelium, and having no proper walls; this constitutes the rete testis.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

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Male reproductive system
Scrotumlayers (skin, Dartos, External spermatic fascia, Cremaster, Internal spermatic fascia) • Perineal raphe • Spermatic cord
Testeslayers (Tunica vaginalis, Tunica albuginea) • Appendix • Mediastinum • Lobules • Septa • Leydig cell • Sertoli cell • Blood-testis barrier
SpermatogenesisSpermatogonium • Spermatocytogenesis • Spermatocyte • Spermatidogenesis • Spermatid • Spermiogenesis • Spermatozoon
seminal tractSeminiferous tubules (Tubuli seminiferi recti, Rete testis, Efferent ducts) • Epididymis  (Appendix) • Vas deferens • Ejaculatory duct  Seminal colliculus
urinary tractInternal urethral orifice • Urethra (Prostatic, Intermediate, Spongy) • Urethral crest • Urethral gland • External urethral orifice
PenisCorpus cavernosum • Corpus spongiosum • Navicular fossa of male urethra • Glans penis • Fundiform ligament • Suspensory ligament • Foreskin • Frenulum
accessory glandsSeminal vesicles  (Excretory duct of seminal gland) • Prostate  (Prostatic utricle, Prostatic sinus) • Bulbourethral glands
The testicle (from Latin testis, meaning "witness",[1] plural testes) or ballock is the male generative gland in animals. This article will concentrate on mammalian testicles unless otherwise noted.
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The epididymis is part of the human male reproductive system and is present in all male mammals. It is a narrow, tightly-coiled tube connecting the efferent ducts from the rear of each testicle to its vas deferens.
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Tunica albuginea is an anatomy term that literally means "white covering." It is used to refer to several structures, including:
  • Tunica albuginea (penis): The tough fibrous layer of connective tissue that surrounds the corpora cavernosa of the penis.

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septa which extend between the mediastinum testis and the tunica albuginea, and consists of from one to three, or more, minute convoluted tubes, the tubuli seminiferi.

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The glandular structure of the testis consists of numerous lobules.

Their number, in a single testis, is estimated by Berres at 250, and by Krause at 400.

They differ in size according to their position, those in the middle of the gland being larger and longer.
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The mediastinum testis is a network of fibrous connective tissue that extends from the upper to near the lower extremity of the testis, and is wider above than below.
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Seminiferous tubules are located in the testicles, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa.

The epithelium of the tubule consists of sustentacular or Sertoli cells, which are tall, columnar type cells that line
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Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the vasa efferentia.
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The efferent ducts (or efferent ductules) are part of the testis, connecting the rete testis with the head of the epididymis. 12 to 20 in number, their function is primarily as conduits of sperm. They are lined by columnar, mostly ciliated epithelium.
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The vas deferens (plural: vasa deferentia), also called ductus deferens, (Latin: "carrying-away vessel") is part of the male anatomy of some species, including humans.
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septa which extend between the mediastinum testis and the tunica albuginea, and consists of from one to three, or more, minute convoluted tubes, the tubuli seminiferi.

Additional images




..... Click the link for more information.
Seminiferous tubules are located in the testicles, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa.

The epithelium of the tubule consists of sustentacular or Sertoli cells, which are tall, columnar type cells that line
..... Click the link for more information.
The glandular structure of the testis consists of numerous lobules.

Their number, in a single testis, is estimated by Berres at 250, and by Krause at 400.

They differ in size according to their position, those in the middle of the gland being larger and longer.
..... Click the link for more information.
The efferent ducts (or efferent ductules) are part of the testis, connecting the rete testis with the head of the epididymis. 12 to 20 in number, their function is primarily as conduits of sperm. They are lined by columnar, mostly ciliated epithelium.
..... Click the link for more information.
Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the vasa efferentia.
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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The testicle (from Latin testis, meaning "witness",[1] plural testes) or ballock is the male generative gland in animals. This article will concentrate on mammalian testicles unless otherwise noted.
..... Click the link for more information.
Seminiferous tubules are located in the testicles, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa.

The epithelium of the tubule consists of sustentacular or Sertoli cells, which are tall, columnar type cells that line
..... Click the link for more information.
Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the vasa efferentia.
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The mediastinum is a non-delineated group of structures in the thorax (chest), surrounded by loose connective tissue. It is the central compartment of the thoracic cavity.
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Anastomosis (plural anastomoses) refers to a form of network in which streams both branch out and reconnect. The term is used in medicine, biology, and geology.

Medicine

Anastomosis is the surgical connection of two structures.
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Stroma may refer to:
  • Stroma, Scotland, an island off the northern coast of Scotland in the Pentland Firth
  • Stroma (animal tissue), the connective, functionally supportive framework of a biological cell, tissue, or organ

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epithelium is a tissue composed of a layer of cells. Epithelium lines both the outside (skin) and the inside cavities and lumen of bodies. The outermost layer of our skin is composed of dead stratified squamous, keratinized epithelial cells.
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Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the vasa efferentia.
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Public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction.
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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human male reproductive system is a series of organs located outside of the body and around the pelvic region of a male that contribute towards the reproductive process.

The male contributes to reproduction by producing spermatozoa.
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The reproductive system is the ensembles and interactions of organs and/or substances within an organism that strictly pertain to reproduction. As an example, this would include in the case of female mammals, the hormone estrogen, ova, and the uterus and the vagina, and the breasts.
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In some male mammals, the scrotum is a protuberance of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis and anus.
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The dartos is a layer of smooth muscular fiber outside the external spermatic fascia but below the skin.

Gender differences

  • In males it is termed tunica dartos and lies beneath the skin of the scrotum.

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