Male accessory sex organs, Biology

Male Accessory Sex Organs

The accessory ducts and glands of the male are specialisations for the storage of spermatozoa and their conveyance in an adequate vehicle to the exterior at the proper time. These structures in the human male include multiple ductuli efferntes, paired epididymis, vasa deferentia, seminal vesicles, ejaculatory ducts, cowpers’ glands, a prostate gland, the urethra and the copulatory organ, penis. The epididymis is 'an extremely convoluted tubule that measures around 20 feet in length when straightened out. It is a storage place for spermatozoa collected from the testis lumen. Spermatozoa improve the capacity for motility and fertilisation after a period of residence in this organ. Vas deferens begins from the terminal end of the epididymis it receives a duct from the seminal vesicles and then becomes known as ejaculatory duct. It also courses through the prostate gland and enters the urethra.

The vas deferens contains well developed muscle layers and is largely responsible for the movement of sperm along the tract. Sperm storage also occurs at the proximal end of the vas deferens. The spermatozoa m believed to be nonmotile in the storage structures such as epididymis and the proximal portion of the vas deferens, but become motile when mixed with the accessory gland secretions. The seminal fluid emanating from the accessory glands furnishes a vehicle for the conveyance of sperm and perhaps provides an environment in which they can attain their greatest fertilising capacity. All of the accessory sex organs mentioned above depend on androgens for full functional development and are quite inactive until the advent of puberty.

Posted Date: 1/16/2013 7:50:14 AM | Location : United States







Related Discussions:- Male accessory sex organs, Assignment Help, Ask Question on Male accessory sex organs, Get Answer, Expert's Help, Male accessory sex organs Discussions

Write discussion on Male accessory sex organs
Your posts are moderated
Related Questions
Segregation and Treatment of Dressing Waste In many departments waste is less and normally they do not have treatment facility for the bio-medical waste. In their case, interme

What is Microbodies ? Microbodies : Microbodies are formed by pinching off of vesicles from rough endoplasmic reticulum. They are not found in every cell, but are present a

Q. Goals of Dietary Treatment for dyslipidemia? The goals of dietary management (alone or conjunction with exercise or with lipid lowering drugs) are to reduce the total fat, s

Q. What are the two divisions of the angiosperms? The angiosperms are divided into dicotyledonous and monocotyledonous.

Is transportation of gases in tracheophytes made through the vascular tissues? Carbon dioxide and oxygen are not transported by the xylem or phloem. These gases reach the cells

What are target organs of the hormones? Target organs, target tissues and target cells are those exact organs, tissues and cells upon which each hormone acts and makes its effe

Q. Cleaning efficiency of Detergents and Soaps? Soaps and detergents emulsify fats, oils and grease so that they are easily washed away. They usually contain chemical builder

Why do the sons of a haemophiliac father never vary from this trait? Why is the cleavage in mammals referred as simple homoplastic?

Do moulds grow better where it is dark or light? This time leave one culture dish in a warm place where it receives light all the time. Place the other dish in a warm dark plac

How does the contraceptive diaphragm work? What are the limitations of this contraceptive method? The contraceptive diaphragm is an artifact made of latex or plastic that when