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
State about the Halsted Reitan battery The Halsted Reitan battery, as the procedure came to be known over the years, also has a history. It has been described as a fixed batter

Shapes of viruses Viruses occur in a wide variety of shapes. Some are spherical or polyhedral . Some are helical appearing cylindrical or rod-like and other are complex. Virus

Q. What are the phases to atherosclerosis? There are five phases to atherosclerosis: Phase I: Asymptomaticphase, consists of fatly streaks which are non-obstructive, lipi

write about the asexual reproduction in mucor

Cyanotic Congenital Heart Disease   So far we have discussed the acyanotic congenital heart disease. Now we shall discuss some of  the main cyanotic congenital heart diseases.

Explain Methods Used For Estimation of Vitamin C? The most commonly used methods to determine ascorbic acid in foods are: 1. Titrimetric methods - The 2, 6 dichlorophenol in

what are the types of polyembryony?

Formation of cocoon in earthworm: In earthworm segments from 14 to 17 are swollen. Skin on these segments is thick and glandular. This is called clitellum. When ovaries ma

SPECIE S CONCEPT - According to Davis and Heywood species define as assemblage of individuals with morphological features in common and separable from other such assembla

Define requirements of Vitamin A for infants? As for vitamin A deficiency, requirement of vitamin A is the most easy to meet as it is abundantly present in green and yellow veg