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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...
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
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...
Torsion of Noncircular Members01:16

Torsion of Noncircular Members

Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
Infertility in Males01:23

Infertility in Males

Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
McNemar's Test01:23

McNemar's Test

McNemar's Test is a nonparametric statistical test used to determine if there is a significant difference in proportions between two related groups when the outcome is binary (e.g., yes/no, success/failure). It is beneficial when we have paired data, such as pre-test/post-test designs, where the same subjects are measured under two different conditions. The test is named after the statistician Quinn McNemar, who introduced it in 1947. It is commonly used in situations where subjects are...

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Updated: Jun 4, 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

Cryptorchid testicular torsion.

Catherine Porter Moore1, Jonathan K Marr, Craig J Huang

  • 1Department of Pediatrics, Division of Emergency Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA. craig.huang@utsouthwestern.edu

Pediatric Emergency Care
|February 5, 2011
PubMed
Summary

Testicular torsion is a urological emergency. Torsion of an undescended testicle (cryptorchid testicle) is less recognized but requires prompt diagnosis and treatment in the emergency department.

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Microsurgical Obstruction of Testes Fusion in Spodoptera litura
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Microsurgical Obstruction of Testes Fusion in Spodoptera litura

Published on: July 16, 2021

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Last Updated: Jun 4, 2026

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

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Published on: November 17, 2023

Microsurgical Obstruction of Testes Fusion in Spodoptera litura
03:38

Microsurgical Obstruction of Testes Fusion in Spodoptera litura

Published on: July 16, 2021

Area of Science:

  • Urology
  • Emergency Medicine
  • Pediatric Surgery

Background:

  • Testicular torsion is a common surgical emergency, typically occurring in adolescents.
  • Cryptorchidism, the failure of a testicle to descend, increases the risk of torsion.
  • Torsion of a cryptorchid testicle is underrecognized in emergency settings.

Observation:

  • A case of a torsed cryptorchid testicle is presented.
  • The clinical presentation and diagnostic challenges are highlighted.
  • Review of pathophysiology, imaging, and prognosis for this specific condition.

Findings:

  • Cryptorchid testicular torsion may present atypically, delaying diagnosis.
  • Ultrasound is crucial for diagnosis, though sometimes challenging in undescended testes.
  • Delayed diagnosis significantly worsens the prognosis for testicular salvage.

Implications:

  • Increased awareness among emergency physicians is crucial for timely diagnosis.
  • Prompt surgical intervention is vital for preserving testicular function.
  • This case underscores the importance of considering torsion in all cases of testicular pain, even in cryptorchid testes.