Why Is Ejaculation Essential in Human Reproduction?
Ejaculation is the release of semen from the reproductive tract of a male due to an orgasm. It occurs in two stages: firstly, when sperm are moved from the testes and the epididymis to the beginning of the Urethra, a hollow tube runs through the penis that transports sperm or urine. In the second stage, the semen is exploded through the urethra and from the body. The ejaculation process is possible due to nerve impulses received from the penis; it works as a reflex reaction. Once started, it cannot be interrupted. To know how to ejaculate semen is due to the movement of the sperm cells; it has to receive fluids from various internal organs.
It helps in the increase of oxygen and the decrease of acidity fluids. These internal organs are the prostate gland, ejaculatory ducts, seminal vesicles and Cowper glands that supply seminal plasma to the sperm cell. The total volume of the ejaculate averages between 2 and 5 milliliters in a human.
What is the Ejaculatory Duct?
The ejaculation muscle is formed by the joining of the ampulla of ductus deferens and seminal vesicle. So, where is sperm stored before ejaculation? The vents that open into the urethra halfway through the prostate gland function to mix the sperm stored in the ampulla with fluids secreted by the seminal vesicles and transport these substances to the prone. At the ejaculation procedure, semen passes through the prostate gland, enters the urethra and exits the body.
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What is an Organ?
In a living organism, a group of tissues perform a specific function. Advanced animals have ten organ systems.
Skeletal
Muscular
Nervous
Endocrine
Digestive
Respiratory
Reproductive
Respiratory
Circulatory
Excretory
Plants have primary organs like stem, root, and leaf to help in their growth and survival.
What is Orgasm?
Orgasm is the last and final stage of male sperm ejaculation. It is a feeling of intense pleasure and an abrupt increase in pulse rate and blood pressure. The rapid muscles’ spasms, mainly in the genital and anal areas, are felt. There is a change in the pattern of heart rate and blood pressure simultaneously felt. The release of ejaculatory fluid usually accompanies a male orgasm. A Female attains an orgasm for a more extended period than a male.
Describe Science
Science is a field of study concerned with the physical world and its phenomena, and It covers unbiased observations and systematic experimentation. It can be divided into three categories.
Physical Sciences- Study of the inorganic world and its principles. It is further divided into astronomy, physics, chemistry and earth sciences.
Biological- Study of the organic world, and it can be further divided into biology and medicines.
Social Sciences- It is the study of the social and cultural behaviour of the society. It can be further divided into anthropology and economics.
What is Semen?
Semen is a fluid released from the male reproductive tract, and it contains sperm cells that help in fertilising the female eggs. It also includes fluids that form seminal plasma to keep the sperm cells viable. The male sperm ejaculation initially has 2 to 5 percent of the semen volume. As they move in the body, they keep collecting different fluids by the various tubules and glands of the reproductive system.
What is the Sexual Response Cycle?
The manner of physiologic events during sexual arousal and intercourse is the sexual response cycle. It occurs in four stages, namely excitement, plateau, orgasm and resolution. In the excitement stage, the body prepares for sexual activity by an erection of the penis in the male and moist vagina walls in the female. In the plateau stage, heart rate increases and muscles become tense, glans at the head of the penis swells in the male while the outer vagina shrinks and the clitoris recants. In Orgasm, ejaculation in humans occurs and from where the sperm is stored before ejaculation is released. For a female in this stage, the Vagina starts contractions. In the resolution stage, a gradual returning phase begins both in male and female. In the male, the penis shrinks back to its standard size, and in the female, the genital parts come back to the normal stage again.
FAQs on Ejaculation: Understanding the Biological Process
1. What is the biological definition of ejaculation?
In Biology, ejaculation is the process of discharging semen from the male reproductive tract. This reflex action is a crucial step in natural reproduction, as it delivers sperm into the female reproductive tract, making fertilisation possible.
2. Can you explain the main stages of the ejaculation process?
The process of ejaculation occurs in two main stages controlled by the nervous system:
- Emission: In this first stage, sperm from the testes and fluids from the prostate and seminal vesicles are moved into the urethra. The internal bladder sphincter contracts to prevent semen from entering the bladder and urine from mixing with semen.
- Expulsion: This is the second stage where the muscles at the base of the penis contract rhythmically, forcing the semen out of the urethra.
3. What is the difference between semen and sperm?
Sperm are the male reproductive cells, or gametes, that carry genetic information. Semen, also called seminal fluid, is the complete fluid that is ejaculated. It is a mixture of sperm and fluids from several accessory glands, including the seminal vesicles and the prostate gland, which provide nourishment and protection for the sperm.
4. What is the role of the nervous system in controlling ejaculation?
Ejaculation is an involuntary reflex controlled by the autonomic nervous system. The sympathetic nerves trigger the emission phase, causing the reproductive ducts and glands to contract. This is followed by a spinal reflex that triggers the rhythmic muscle contractions of the expulsion phase.
5. How is ejaculation different from an orgasm?
While they often occur together, ejaculation and orgasm are two separate events. Ejaculation is the physical process of releasing semen. An orgasm is the peak of sexual excitement, which is a neurological and emotional sensation of intense pleasure. It is possible for one to occur without the other.
6. What happens to sperm in the male body if ejaculation does not occur?
If ejaculation does not happen, the old sperm cells are simply broken down and reabsorbed by the body. The male reproductive system continuously produces sperm, and this reabsorption process is a normal and harmless way for the body to manage the cells that are not used.
7. Why is the composition of seminal fluid so important for fertilisation?
The fluid component of semen is critical for successful fertilisation. It provides nourishment for the sperm through sugars like fructose, helps them swim effectively, and contains alkaline substances that neutralise the acidic environment of the female vagina, protecting the sperm and increasing their chances of reaching the egg.
8. What is retrograde ejaculation?
Retrograde ejaculation is a physiological condition where semen travels backward into the bladder instead of exiting through the urethra during ejaculation. This happens when the bladder sphincter muscle, which is supposed to close during ejaculation, does not function correctly. It is a specific type of ejaculatory dysfunction.
