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Related Concept Videos

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...
Sperm Structure and Semen Composition01:22

Sperm Structure and Semen Composition

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...
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.
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Serum Laboratory Studies, Stool Test, Breath Test01:30

Serum Laboratory Studies, Stool Test, Breath Test

Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
Sperm Transport01:15

Sperm Transport

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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Spermatogenesis

Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...

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Related Experiment Video

Updated: Jul 15, 2026

The Examination of Peroxidase-Positive Leukocytes in Semen
04:36

The Examination of Peroxidase-Positive Leukocytes in Semen

Published on: January 19, 2024

Semen analysis: the test techs love to hate.

Susan A Rothmann1, Angela A Reese

  • 1Fertility Solutions, Cleveland, OH, USA. srothmann@fertilitysolutions.com

MLO: Medical Laboratory Observer
|May 15, 2007
PubMed
Summary

Improving semen analysis quality is crucial for fertility diagnosis. Implementing professionalism, knowledge, and standardized procedures enhances results and patient satisfaction for couples seeking fertility treatment.

Area of Science:

  • Clinical Laboratory Science
  • Reproductive Medicine
  • Andrology

Background:

  • Semen analysis is a critical diagnostic tool for male infertility.
  • Despite its importance, semen analysis is often undervalued and neglected in clinical laboratories.
  • The accuracy of semen analysis directly impacts fertility diagnosis and treatment outcomes.

Purpose of the Study:

  • To provide practical recommendations for improving the quality of semen analysis.
  • To highlight the importance of professionalism and standardized procedures in andrology.
  • To guide laboratories in enhancing the efficiency and reliability of semen analysis.

Main Methods:

  • Review of best practices in semen analysis.
  • Emphasis on knowledge dissemination and training for laboratory personnel.

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Last Updated: Jul 15, 2026

The Examination of Peroxidase-Positive Leukocytes in Semen
04:36

The Examination of Peroxidase-Positive Leukocytes in Semen

Published on: January 19, 2024

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
08:48

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Published on: April 21, 2022

  • Integration of quality control (QC) and competency benchmarks.
  • Main Results:

    • Implementing simple, repeatable procedures can significantly improve semen analysis quality.
    • Professionalism and adherence to benchmarks enhance laboratory efficiency and test reliability.
    • Improved semen analysis leads to better-informed fertility treatment decisions.

    Conclusions:

    • Semen analysis requires a professional approach to ensure accurate results.
    • Standardized procedures, knowledge, and quality control are key to overcoming the neglect of this vital test.
    • Enhancing semen analysis quality is essential for couples undergoing fertility treatment.