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Related Concept Videos

Accessory Glands of the Male Reproductive System01:16

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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.
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During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
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Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
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Accessory Ducts of the Male Reproductive System01:25

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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.
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The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
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Testes: Histology01:27

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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.
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Updated: Jun 27, 2025

Author Spotlight: Advanced Treatment of Seminal Duct Blockage Employing Endoscopy-Mediated Semen Channel Refluviation
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Seminal vesicles in focus: An illustrated overview.

Bárbara Gaspar1, Miguel Ramalho2, Adalgisa Guerra2

  • 1Department of Radiology, Hospital Garcia de Orta, Almada, Portugal.

Current Problems in Diagnostic Radiology
|May 1, 2024
PubMed
Summary
This summary is machine-generated.

Seminal vesicle imaging is crucial for diagnosing various conditions affecting male reproductive health. This review details imaging characteristics of normal seminal vesicles and pathologies, aiding radiologists in accurate patient management.

Keywords:
Computed TomographyCongenital AnomaliesMagnetic Resonance ImagingProstateSeminal vesiclesUrologic Oncology

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Area of Science:

  • Radiology
  • Male Reproductive System Imaging
  • Medical Imaging

Background:

  • Seminal vesicles are vital for male reproduction, contributing most ejaculate fluid.
  • Pathology of seminal vesicles can cause non-specific symptoms, necessitating imaging for diagnosis.
  • Imaging, particularly MRI, is essential for evaluating seminal vesicle diseases.

Purpose of the Study:

  • To provide an overview of typical seminal vesicle imaging appearance.
  • To illustrate imaging characteristics of various seminal vesicle conditions.
  • To aid radiologists in recognizing normal variants and pathologies for improved patient management.

Main Methods:

  • Review of imaging modalities for seminal vesicle evaluation.
  • Detailed analysis of MRI findings in seminal vesicle pathology.
  • Categorization of lesions including congenital, inflammatory, infectious, and neoplastic.

Main Results:

  • Typical seminal vesicles appear as elongated, fluid-containing structures.
  • Congenital anomalies, inflammation, and neoplasms alter seminal vesicle appearance.
  • Differentiating mimics from actual pathology is critical for management.

Conclusions:

  • Radiologists must be aware of normal seminal vesicle imaging variability.
  • Recognition of principal pathologies affecting seminal vesicles is crucial.
  • Accurate imaging diagnosis ensures proper patient management for seminal vesicle conditions.