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Sperm Structure and Semen Composition

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...

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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Related Experiment Video

Updated: Mar 28, 2026

Fluorimetric Techniques for the Assessment of Sperm Membranes

Fluorimetric Techniques for the Assessment of Sperm Membranes

Published on: November 28, 2018

Postcoital Sperm Assessment Comparative Study.

Michael J Pelekanos¹

¹Department of Obstetrics and Gynecology, Forbes Regional Hospital, Monroeville, PA.

Surgical Technology International

|December 19, 2015

Summary

The Stork® OTC conception aid showed higher sperm concentrations in cervical mucus compared to natural intercourse for 85% of participants. This fertility device may improve sperm delivery for conception.

Area of Science:

Reproductive Medicine
Human Fertility Studies
Sperm Analysis

Background:

Assessing sperm concentration in cervical mucus is crucial for evaluating fertility and the effectiveness of conception methods.
Traditional post-coital tests (PCT) are used to assess sperm-mucus interaction, but efficacy can vary.
Novel conception aids aim to improve sperm delivery to the cervix, potentially enhancing fertilization success.

Purpose of the Study:

To compare the efficacy of The Stork® OTC conception aid versus natural intercourse (NI) in achieving higher sperm concentrations in cervical mucus.
To evaluate sperm counts within the cervical mucus following the use of The Stork® OTC device as a patient's own control.

Main Methods:

A non-blinded, non-randomized, single-center study conducted over 10 months.

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Fifteen couples participated, using both The Stork® OTC and natural intercourse methods.

Post-coital tests (PCT) were performed to measure sperm concentration in cervical mucus for comparison.

Main Results:

85% of test subjects demonstrated higher sperm concentrations in cervical mucus with The Stork® OTC compared to natural intercourse.
The average sperm score in the successful group was 3.23 times higher when using The Stork® OTC.
The remaining 15% of subjects showed no significant difference in sperm concentration between the two methods.

Conclusions:

The Stork® OTC conception aid appears to be more effective than natural intercourse in increasing sperm concentration within cervical mucus.
This suggests The Stork® OTC may enhance sperm delivery to the female reproductive tract, potentially aiding conception.
Further research with larger sample sizes is warranted to confirm these findings.