Anatomy of the Scrotum and Testes

A pouch of skin that holds the testicles, separated by the median raphe externally and tunica dartos internally.

The external seam separating the two halves of the scrotum.

The smooth muscle layer that helps regulate the temperature of the testicles by contracting and relaxing.

The cord-like structure containing the vas deferens, blood vessels, nerves, and lymphatics, which connects the testicles to the pelvic cavity.

A group of veins that drain blood from the testicles, contributing to temperature regulation.

Symmetric, oval-shaped organs responsible for producing testosterone and sperm.

The process of sperm production occurring within the testes.

A network of tiny tubes located in the center of each testis, responsible for collecting sperm.

Coiled tubes found within the lobules of the testes, responsible for sperm production.

The head of the epididymis, receiving sperm from the testes via efferent ductules.

A network of veins surrounding the testicular artery, helping to regulate testicular temperature.

A tough outer layer of connective tissue that surrounds the testes, providing support and protection.

A tube extending from the epididymis to the ejaculatory duct, responsible for transporting sperm.

A series of tubules within the testes, connected to the rete testis, where sperm production occurs.

The head of the epididymis, where sperm are stored and mature.

A long, coiled tube that connects the testes to the vas deferens and is responsible for storing and maturing sperm.

The head of the epididymis is where sperm enters from the testes.

The body of the epididymis is where sperm mature and gain the ability to fertilize an egg.

The tail of the epididymis is where mature sperm are stored before moving to the vas deferens.

The epididymis is a tubular structure with a head, body, and tail.

A smooth, medium gray structure with a fine echo texture seen on ultrasound.

The right testicle is denoted as 'RT' and the left testicle as 'LT' on an ultrasound.

Ultrasound imaging uses sound waves to create pictures of internal structures, like the testicles.

Echo texture refers to the appearance of internal tissue on an ultrasound, determining how sound waves bounce back from the tissue.

Ultrasound images provide visual information about the anatomy and potential abnormalities of the testicles.

The middle portion of the epididymis extending along the posterior aspect of the testicle. It's smaller than the head and continues the journey of sperm.

The smallest part of the epididymis, located posterior to the lower pole of the testicle. It stores sperm until ejaculation.

The epididymis follows the posterolateral aspect of the testicle from the upper to the lower pole.

The epididymis passes through the spermatic cord and continues as the vas deferens, which transports sperm towards the urethra.

On ultrasound, the epididymis usually appears darker or the same shade as the testicle.

The epididymis has a rougher, granular texture compared to the smooth testicle.

A central structure within the testicle formed from the tunica albuginea, containing vessels and ducts.

Partitions formed by tunica albuginea extending from the mediastinum, dividing the testicle into compartments.

Compartments within the testicle created by septae, containing seminiferous tubules.

The mediastinum testis provides structural support for vessels and ducts that run through the testicle.

The mediastinum testis is a dense, hyperechoic structure within the testis that is visible on ultrasound. It's a collection of fibrous tissue containing the rete testis, blood vessels, and lymphatics.

On ultrasound, the mediastinum testis appears as a bright, white line because it's a dense collection of fibrous tissue. This is different from the surrounding testicular tissue, which has a more even texture.

The mediastinum testis runs from the top to the bottom of the testis. It's visible in a craniocaudal direction, like a vertical line

The mediastinum testis is a key landmark on testicular ultrasound, helping to differentiate between normal testicular tissue and potential abnormalities. It's also important for visualizing the rete testis, which collects sperm from the seminiferous tubules.

The mediastinum testis is a crucial part of testicular anatomy, serving as a central hub for sperm transport and other essential functions.