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Related Concept Videos

Testes: Gross Anatomy01:19

Testes: Gross Anatomy

The testes, also known as testicles, are the male gonads. They are housed within the scrotum, a sac-like structure located beneath the penis. The scrotum's primary role is to regulate the temperature of the testes, which is crucial for sperm production.
Each testis is surrounded by the tunica albuginea, a dense connective tissue layer that provides structural support and protection. This layer is covered by an outer serous membrane called the tunica vaginalis, which helps reduce friction...
Accessory Glands of the Male Reproductive System01:16

Accessory Glands of the Male Reproductive System

The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
Testes: Histology01:27

Testes: Histology

A tough, fibrous membrane, the tunica albuginea, covers the testes, extending inward to form fibrous partitions or septa, dividing them into internal compartments called lobules. Each lobule has 1 to 3 tightly coiled seminiferous tubules where sperm production occurs. These tubules merge into a tubular network at the back of the testis, known as the rete testis. It connects to 15 to 20 efferent ductules, leading to the epididymis.
The spermatogenic cells, responsible for producing sperm, are...
Accessory Ducts of the Male Reproductive System01:25

Accessory Ducts of the Male Reproductive System

The male reproductive system is a complex network of organs and tissues that work together to produce and transport sperm. The epididymis, vasa deferens, ejaculatory ducts, and urethra are the accessory ducts involved in sperm maturation and transportation. These ducts play a critical role in the production and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle.
Penis01:29

Penis

The penis serves a dual role in sexual reproduction and urination. It consists of three main regions: the glans penis, the body, and the root, each with distinct functions and unique anatomical features.
Anatomy of the Penis
The glans penis, or the head, is the terminal part of the penis and houses the external urethral orifice, the exit point for urine and semen. Covered by the prepuce, or foreskin, the glans is noted for its sensitivity and plays a key role in sexual pleasure. The body of the...
Reticular Dermis01:15

Reticular Dermis

The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...

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Related Experiment Video

Updated: May 26, 2026

Murine Orchiectomy and Ovariectomy to Reduce Sex Hormone Production
09:36

Murine Orchiectomy and Ovariectomy to Reduce Sex Hormone Production

Published on: November 17, 2023

Nodule on the scrotum.

Tarun Narang1, Varinder Singh, Jasbir Singh

  • 1Department of Dermatology, Venereology & Leprology, Gian Sagar Medical College & Hospital, Ram Nagar, Banur, Patiala, India. narangtarun@yahoo.co.in

Skinmed
|December 15, 2011
PubMed
Summary
This summary is machine-generated.

A painless scrotal leiomyoma, a benign smooth muscle tumor, was surgically removed from a 39-year-old man. Histopathology confirmed the diagnosis, with no recurrence at six months.

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Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns
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Murine Orchiectomy and Ovariectomy to Reduce Sex Hormone Production
09:36

Murine Orchiectomy and Ovariectomy to Reduce Sex Hormone Production

Published on: November 17, 2023

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns
08:30

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns

Published on: December 12, 2025

Area of Science:

  • Dermatology
  • Surgical Pathology

Background:

  • Scrotal lesions can present with varied etiologies.
  • Leiomyomas are benign neoplasms originating from smooth muscle tissue.

Observation:

  • A 39-year-old man presented with a painless, enlarging scrotal nodule over two years.
  • Physical examination revealed a 2x2 cm rubbery, skin-colored nodule, distinct from testicular structures.
  • Scrotal ultrasonography showed normal testes and epididymis.

Findings:

  • Histopathological examination of the resected scrotal mass confirmed leiomyoma.
  • The tumor exhibited intertwined smooth muscle fibers, spindle-shaped cells with eosinophilic cytoplasm, and a low mitotic index.
  • No cellular atypia was observed, and normal dartoic muscle fibers were present peripherally.

Implications:

  • Surgical resection is an effective treatment for symptomatic scrotal leiomyomas.
  • Leiomyomas of the scrotum are rare but benign tumors.
  • Complete excision ensures favorable prognosis with no recurrence observed at six months post-operation.