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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...

Amebiasis

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

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...

Psychosexual Stages of Personality: Genital

Psychosexual Stages of Personality: Genital

The genital stage is the final phase of Sigmund Freud's theory of psychosexual development, beginning at puberty, around age 12. During this stage, sexual energy shifts from self-focused interests to external individuals, marking the development of mature adult sexuality. Freud saw this phase as a time of sexual reawakening, with desires directed toward others outside the family. A healthy transition into this stage, according to Freud, signifies the emergence of two key aspects of adult...

Psychosexual Stages of Personality: Phallic

Psychosexual Stages of Personality: Phallic

The third stage of psychosexual development proposed by Freud is the phallic stage, occurring between the ages of 3 and 6. During this period, children become aware of their bodies and the differences between males and females. The erogenous zone in this stage is the genitals, and conflicts arise as children develop desires toward the opposite-sex parent. Boys experience the Oedipus complex, where they desire their mother and view their father as a rival. This leads to castration anxiety, the...

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Related Experiment Video

Updated: Jun 20, 2026

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

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

Published on: March 15, 2024

[Priapism].

P Anheuser¹, A Treiyer, J Steffens

¹Klinik für Urologie und Kinderurologie, St.-Antonius-Hospital Eschweiler, Akademisches Lehrkrankenhaus der RWTH Aachen, Dechant-Deckers-Str. 8, 52249, Eschweiler, Germany. Petra.Anheuser@sah-eschweiler.de

Der Urologe. Ausg. A

|August 21, 2009

Summary

This summary is machine-generated.

Priapism, a rare medical emergency, requires prompt intervention to preserve erectile function. Identifying urgent cases is crucial for effective treatment and optimal outcomes.

Related Experiment Videos

Last Updated: Jun 20, 2026

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

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

Published on: March 15, 2024

Area of Science:

Urology
Emergency Medicine

Context:

Priapism, though rare, is a critical medical condition.
Prompt treatment is essential for managing priapism.
Not all priapism cases necessitate immediate aggressive intervention.

Purpose:

To differentiate priapism cases requiring rapid intervention.
To outline therapeutic goals for priapism, focusing on detumescence and erectile function preservation.

Summary:

Current data limits recommendations for priapism management.
A standardized approach and consistent documentation are needed.
Standardized parameters are required for evaluating functional results in priapism patients.

Impact:

Improved clinical decision-making for priapism cases.
Enhanced ability to preserve erectile function in patients with priapism.
Foundation for evidence-based guidelines in priapism treatment.