TESTICLES

The testis is a paired organ (right and left), situated in a muscle-cutaneous sac called the scrotum, which is located in the anterior region of the perineum, just behind the penis.

Each testis is ovoid in shape, with the large axis almost vertical, and slightly flattened laterally, resulting in two faces, two edges, and two ends.

The faces are lateral and medial, the anterior and posterior edges and the upper and lower extremities.

TESTING & #8211; GLOBAL VIEW
TESTRICLE - OVERVIEW

 

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

The posterior border is occupied from top to bottom by a cylindrical formation, more dilated upwards, than the epididymis.

The upper half of the posterior border of the testis properly represents the hilum of the testis, receiving the special denomination of the testis mediastinum.

It is through the mediastinum that the testis properly communicates with the epididymis.

SECTION TESTICLE
 SECTION TESTICLE
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

The testis is surrounded by a connective, pearly-white capsule called the albuginous tunic.

The albuginous tunic sends into the small testis septa known as sepuli of the testicles, which subdivide them into lobes.

In the lobes of the testicles we find a large amount of long thin, winding ducts, almost capillary in size, which are called contorted seminiferous tubules.

It is in these contorted seminiferous tubules that sperm are formed.

The seminiferous tubules converge to the mediastinum of the testicles and are anastomosed, forming straight seminiferous tubules, which intersect forming a true (Haller's) network at the level of the mediastinum.

In the mediastinum, the straight seminiferous tubules flow into ten to fifteen efferent tubules, which run from the testis to the head of the epididymis.

TESTING & #8211; SCHEME
 
TESTRICLE - SCHEME
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

 

Structures of
Male Genital System
Epididymis
Deferent Duct
Ejaculatory Duct
Seminal Gall
Prostate
Bulbouretral Gland
Penis
Scrotum

 

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