What is sperm and semen? Difference between sperm and semen

by | Nov 19, 2023 | Sexual Awareness & Sexual Health

What is Sperm?

Sperm are the male reproductive cells, or gametes, in animals and some other organisms. They are microscopic, typically about 50-100 micrometers in length, and they have a long, whip-like tail that allows them to swim. Sperm are produced in the testes, and they are released into the semen during ejaculation.

Function of Sperm:-

The main function of sperm is to fertilize an egg. When a sperm encounters an egg, it releases enzymes that help it to break through the egg’s protective layers. Once the sperm has entered the egg, its nucleus fuses with the egg’s nucleus, and this creates a fertilized egg or zygote. The zygote then begins to divide and grow, eventually developing into a new organism.

sperm and semen

Sperm are very specialized cells, and they have a number of features that help them to carry out their function. For example, their tails are powered by mitochondria, which provide them with the energy they need to swim. Their heads contain a haploid set of chromosomes, which is half the number of chromosomes found in most other cells in the body. This haploid set of chromosomes is then passed on to the offspring when the sperm fertilizes an egg.

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What is Semen?

Semen is a white or grayish fluid that is produced by the male reproductive system. It is expelled from the penis during ejaculation and contains sperm, which are the male reproductive cells. Semen also contains other fluids that help to keep the sperm alive and healthy.

Composition of Semen:-

Semen is composed of several different fluids, including:

  • Sperm: Sperm are the male reproductive cells that are responsible for fertilizing an egg. They make up only about 2-5% of the total semen volume.
  • Seminal plasma: Seminal plasma is a fluid that is produced by the seminal vesicles, prostate gland, and bulbourethral glands. It contains a variety of substances that help to keep the sperm alive and healthy, including fructose, enzymes, and hormones.
  • Prostatic fluid: Prostatic fluid is a fluid that is produced by the prostate gland. It is alkaline and helps to neutralize the acidic environment of the vagina.
  • Bulbourethral gland fluid: Bulbourethral gland fluid is a lubricating fluid that is produced by the bulbourethral glands. It helps to prevent pain and discomfort during ejaculation.

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Function of Semen:-

The main function of semen is to transport sperm to the female reproductive tract, where they can fertilize an egg. Seminal plasma provides the sperm with nutrients and other substances that they need to survive and swim. Prostatic fluid helps to neutralize the acidic environment of the vagina, which can be harmful to sperm. Bulbourethral gland fluid helps to lubricate the urethra, which is the tube that carries urine and semen out of the body.

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Difference Between Sperm and Semen:-

Sperm:-

Sperm are microscopic male reproductive cells, also known as gametes, responsible for fertilizing an egg. They are produced in the testes, mature in the epididymis, and expelled during ejaculation through the urethra as part of semen. Sperm are highly specialized cells with a characteristic structure:

  • Head: Contains the nucleus, which houses the haploid set of chromosomes (half the number found in most cells) to be passed on to the offspring.
  • Midpiece: Contains mitochondria, providing energy for sperm motility through the female reproductive tract.
  • Tail: A long, whip-like tail that allows the sperm to swim towards the egg.

Semen:-

Semen, also known as seminal fluid, is the whitish fluid expelled from the male urethra during ejaculation. It serves as a vehicle for transporting sperm to the female reproductive tract, where they can potentially fertilize an egg. Semen is a complex mixture of fluids produced by various male reproductive organs:

  • Sperm cells: The primary component, typically accounting for only 2-5% of semen volume.
  • Seminal plasma: A fluid primarily produced by the seminal vesicles, providing nutrients and other substances for sperm motility and survival.
  • Prostatic fluid: A fluid from the prostate gland, contributes an alkaline environment to protect sperm from the acidic vaginal environment.
  • Bulbourethral gland fluid: A lubricating fluid from the bulbourethral glands, reducing friction during ejaculation.


Key Differences of Sperm and Semen:-

Sperm:-

  • Specialized male reproductive cells responsible for fertilizing an egg
  • Produced in the testes and mature in the epididymis
  • Expelled during ejaculation through the urethra as part of semen
  • Have a characteristic structure with a head, midpiece, and tail
  • Head contains the nucleus, which houses the haploid set of chromosomes to be passed on to the offspring
  • Midpiece contains mitochondria, providing energy for sperm motility through the female reproductive tract
  • The tail allows the sperm to swim toward the egg

Semen:-

  • Whitish fluid expelled from the male urethra during ejaculation
  • Serves as a vehicle for transporting sperm to the female reproductive tract
  • A complex mixture of fluids produced by various male reproductive organs
  • Sperm cells make up only 2-5% of semen volume
  • Seminal plasma, produced by the seminal vesicles, provides nutrients and other substances for sperm motility and survival
  • Prostatic fluid, from the prostate gland, contributes an alkaline environment to protect sperm from the acidic vaginal environment
  • Bulbourethral gland fluid, from the bulbourethral glands, provides lubrication for the urethra

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Features of Sperm and Semen:-

 

Feature Sperm Semen
Definition Male reproductive cells Fluid expelled during ejaculation
Composition Individual cells Mixture of fluids
Primary function Fertilization of an egg Transport of sperm cells
Relative proportion A small fraction of semen volume A major component of ejaculate

Benefits of sperm and semen:-

Sperm and semen play crucial roles in human reproduction. They are the essential components involved in the fertilization process, enabling the creation of new life. Here’s an overview of the benefits of sperm and semen:

Benefits of Sperm:-

  1. Fertilization: The primary function of sperm is to fertilize an egg, initiating the process of human reproduction. The sperm’s haploid set of chromosomes combines with the egg’s haploid set, resulting in a zygote with a complete set of chromosomes, forming the foundation for a new individual.
  2. Genetic Contribution: Sperm cells carry the father’s genetic information in the form of chromosomes. When the sperm fertilizes an egg, it passes on half of its genetic material, determining the offspring’s traits and characteristics.
  3. Diversity: Sperm cells exhibit genetic diversity, which contributes to the genetic variation among offspring. This genetic variation is crucial for adaptation and survival in a changing environment.

Benefits of Semen:-

  1. Sperm Transport: Semen serves as a medium for transporting sperm cells from the male urethra to the female reproductive tract. The fluid provides a protective environment and facilitates sperm movement towards the egg.
  2. Sperm Nutrition: Semen contains nutrients, such as fructose, that provide energy for sperm motility and survival during their journey to the egg.
  3. Vaginal Neutralization: The alkaline environment of semen helps neutralize the acidic environment of the vagina, which can be harmful to sperm. This neutralization process increases the chances of successful fertilization.
  4. Lubrication: Semen also acts as a lubricant, reducing friction during intercourse and facilitating sperm entry into the female reproductive tract.
  5. Hormonal Regulation: Semen contains hormones that can influence female reproductive processes, potentially enhancing the chances of conception.

Conclusion:- 

Sperm and semen are essential components of human reproduction. They play crucial roles in ensuring the continuation of human life and contributing to the genetic diversity of the human population.

Sperm and semen, working in harmony, lay the foundation for human reproduction. Sperm, the bearers of genetic information, carry the father’s legacy, while semen provides the nurturing environment that facilitates their journey towards fertilization. Their intricate interplay ensures the continuity of human life and the perpetuation of our genetic heritage.

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FAQ’s:-

Q1.  How to boost sperm count

Answer:-  Sperm count is the number of sperm present in a semen sample. A normal sperm count is at least 15 million sperm per milliliter of semen. If you want to boost your Sperm Count then Maintain a healthy weight, Eat a healthy diet, Exercise regularly, Get enough sleep, Avoid smoking and excessive alcohol, and Manage stress.

Q 2. Where is semen stored in the human body?

Answer:-  Semen is then stored in a small sac called the ampulla of the vas deferens, which is located just below the bladder. When a man ejaculates, the muscles in the walls of the ampulla contract, forcing semen out of the urethra.

Q 3. Where is Sperm Produced?

Answer:- Sperm are produced in the seminiferous tubules of the testes. These tubules are tiny coiled tubes that are located inside the testes. The seminiferous tubules are lined with sperm-producing cells called spermatogonia. Spermatogonia undergoes a process called spermatogenesis to develop into mature sperm.

Q4. How semen is produced?

Answer:- Semen production, also known as spermatogenesis, is the complex process by which sperm cells are created in the male reproductive system. This intricate process involves a series of steps that take place within the testes, the epididymis, and other accessory glands.

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