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Penis

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 & Ejaculation

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...

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Related Experiment Video

Updated: Jun 29, 2026

Intracavernosal Pressure Recording to Evaluate Erectile Function in Rodents

Intracavernosal Pressure Recording to Evaluate Erectile Function in Rodents

Published on: June 6, 2018

Intraoperative penile erection.

T H Rao¹, W Zaman, R K Jain

¹Department of Urology and Anaesthesia, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, UP, India. hsgrao@hotmail.com

Archivos Espanoles De Urologia

|February 24, 2001

Summary

This summary is machine-generated.

Intraoperative penile erection during epidural anesthesia is rare but can complicate procedures. Prompt management with cold application and medication is crucial for successful detumescence and safe surgery.

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Area of Science:

Anesthesiology
Urology
Surgical Complications

Background:

Penile erection during epidural anesthesia is an infrequent and poorly understood complication.
This phenomenon can significantly hinder transurethral procedures, potentially leading to complications.

Observation:

Three cases of intraoperative penile erection were observed in 1800 patients undergoing transurethral procedures under epidural anesthesia.
The incidence of this complication was found to be 0.17%.

Findings:

Two cases were successfully managed using local application of cold saline and cold sponging, followed by terbutaline.
The third case resolved with local cold application to the scrotum and penis, allowing the procedure to be completed safely.

Implications:

Effective and rapid management is essential, as the duration of erection is critical for detumescence.
Understanding the pathophysiology and implementing timely therapeutic strategies are key to addressing this intraoperative challenge.