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Related Concept Videos

Spermatogenesis01:41

Spermatogenesis

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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...
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Spermatogenesis01:22

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Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
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Sperm Structure and Semen Composition01:22

Sperm Structure and Semen Composition

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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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Sperm Transport01:15

Sperm Transport

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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.
The maturation phase occurs in the epididymis, where sperm...
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Testes: Histology01:27

Testes: Histology

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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.
The spermatogenic cells, responsible for producing sperm, are...
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Infertility in Males01:23

Infertility in Males

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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Updated: Apr 7, 2026

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
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Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

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Sperm function test.

Pankaj Talwar1, Suryakant Hayatnagarkar1

  • 1HOD, ART Centre Army Hospital (Research and Referral), Daulha kuan, New Delhi, India.

Journal of Human Reproductive Sciences
|July 10, 2015
PubMed
Summary
This summary is machine-generated.

Specialized sperm function tests are crucial for evaluating fertility, especially with borderline semen parameters or previous fertilization failures. These tests assess various sperm functions essential for successful oocyte fertilization.

Keywords:
Fertilizationsperm function testspermatozoa

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Area of Science:

  • Reproductive Biology
  • Andrology
  • Spermatozoa Function

Background:

  • Routine semen analysis may not fully capture male fertility potential.
  • Borderline parameters or prior fertilization issues necessitate advanced sperm function testing.

Purpose of the Study:

  • To review and highlight various sperm function tests beyond routine semen analysis.
  • To emphasize the importance of these tests in diagnosing male infertility.

Main Methods:

  • Discussion of tests assessing sperm nutrition uptake (fructose, citrate).
  • Evaluation of tests for oxidative stress and leukocyte presence (ROS, leukocyte detection).
  • Review of tests for sperm morphology, membrane integrity (vitality, hypo-osmotic swelling test), mitochondrial function, acrosome reaction, and DNA integrity (nuclear chromatic decondensation test).

Main Results:

  • Sperm function tests provide insights into specific spermatozoon capabilities crucial for fertilization.
  • These tests evaluate essential functions like nutrient utilization, protection from damage, motility, membrane function, energy production, acrosome function, and DNA integrity.

Conclusions:

  • Comprehensive sperm function testing is vital for cases with borderline semen parameters or unexplained infertility.
  • These specialized tests offer a deeper understanding of the spermatozoon's role in the fertilization process.