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Related Concept Videos

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...
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...
Male Sexual Response: Erection & Ejaculation01:17

Male Sexual Response: Erection & Ejaculation

Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors01:28

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

Phosphodiesterase 5 (PDE5) inhibitors are potent enzymes that function to hydrolyze cyclic nucleotides to their corresponding 5' monophosphates. Their unique biochemical properties have been applied in treating Pulmonary Arterial Hypertension (PAH).
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Sex Linked Disorders01:43

Sex Linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...

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Related Experiment Video

Updated: Jun 7, 2026

Microscopic Electric Rotary Grinding of Plaques Combined with Graft Repair in the Management of Peyronie's Disease
02:21

Microscopic Electric Rotary Grinding of Plaques Combined with Graft Repair in the Management of Peyronie's Disease

Published on: March 15, 2024

[Penile structural erectile dysfunction].

Natalio Cruz Navarro1

  • 1Hospital Virgen del Rocío de Sevilla, Clínica de Fátima, España. ncruz@pulso.com

Archivos Espanoles De Urologia
|October 28, 2010
PubMed
Summary
This summary is machine-generated.

Structural penile damage from conditions like La Peyronie disease or diabetes can cause severe erectile dysfunction. These often result in irreversible hemodynamic failure due to tissue changes or altered penile geometry.

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Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
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Related Experiment Videos

Last Updated: Jun 7, 2026

Microscopic Electric Rotary Grinding of Plaques Combined with Graft Repair in the Management of Peyronie's Disease
02:21

Microscopic Electric Rotary Grinding of Plaques Combined with Graft Repair in the Management of Peyronie's Disease

Published on: March 15, 2024

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
04:22

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility

Published on: May 30, 2025

Area of Science:

  • Urology
  • Andrology
  • Pathophysiology

Context:

  • Penile structural integrity is crucial for normal erectile function.
  • Various pathologies can disrupt the penis's delicate anatomical and physiological balance.

Purpose:

  • To elucidate the pathophysiological mechanisms linking penile structural anomalies to erectile dysfunction.
  • To highlight common etiologies contributing to severe, treatment-resistant erectile dysfunction.

Summary:

  • Structural anomalies in the penis disrupt normal hemodynamics, leading to erectile dysfunction.
  • Key mechanisms include loss of erectile tissue compliance, abnormal vascular drainage, and geometric alterations.
  • Common causes include La Peyronie disease, priapism, diabetes, trauma, and neoplastic or inflammatory infiltrations.

Impact:

  • Understanding these mechanisms is vital for diagnosing and managing severe erectile dysfunction.
  • This knowledge may guide the development of targeted therapeutic strategies for structural penile pathologies.
  • Provides a foundation for further research into the relationship between penile structure and function.