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The penis is not a muscle or a bone, but a complex organ made up of erectile tissues, blood vessels, glands, and muscle fibres. The penis is supported by the pelvic floor muscles and contains the urethra, which carries urine from the bladder to the external urethral orifice. During an erection, muscles around the blood vessels in the penis contract, causing blood to flow into the penis and resulting in an increase in size and hardness. While the penis itself does not contain bones, it is located near the pubic bone and other pelvic bones, which provide protection and support for the penis and other reproductive organs.
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What You'll Learn
The penis is not a muscle
The penis contains a series of muscles around blood vessels that are involved with producing an erection. These muscles do not make up the structure of the penis itself but are crucial in its function. The penis is mostly made up of spongy tissue that fills with blood when a person gets an erection. The corpus cavernosum contains this spongy tissue and arteries that run along its middle. When the muscles around the corpus cavernosum relax, blood flows into its open spaces, creating pressure that causes the penis to swell and stiffen.
The pelvic floor muscles support the structure of the penis. The bulbospongiosus muscle also contributes to erections, along with the expulsion of urine and semen. The ischiocavernosus muscle helps to stabilise the penis during erection by compressing the crus and slowing the return of blood through the veins.
While the penis does not contain bones, it can still break in a penile fracture. This occurs when an erect penis is bent to the point of "breaking". The corpora cavernosa and corpus spongiosum, the spongy tissue segments that hold blood for erectile function, and the tunica albuginea, the fibrous tissue that protects them, are tissues that can be damaged, potentially causing internal bleeding and damage to the necessary erectile structures.
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The penis is not a bone
The penis is a complex organ made up of erectile tissue, connective tissue, blood vessels, glands, and some muscle fibres that help with erectile function. The penis is conical in shape and is formed by the distal expansion of the corpus spongiosum. This contains the opening of the urethra, through which urine and semen pass. The penis also has an important urinary role, as it contains the urethra, which carries urine from the bladder to the external urethral orifice, where it is expelled from the body.
The penis is supported by the pelvic floor muscles and is surrounded by muscles that help with movement and make penetration and urination possible. The muscles around the corpus cavernosum relax, allowing blood to flow into its open spaces and causing the penis to swell and stiffen. The penis is made up of spongy tissue – the corpora cavernosa and the corpus spongiosum – that runs along the length of the penis. These tissues fill with blood during arousal, leading to an erection.
While the penis does not contain bones, it can still break. This is called a penile fracture and occurs when an erect penis is bent to the point of 'breaking'.
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The penis is made of spongy tissue
The penis is not a muscle or a bone. It is a complex organ made up of erectile tissues, connective tissues, blood vessels, and nerves. While there are muscles in the pelvic region that help maintain an erection, they do not make up the structure of the penis itself.
The penis is primarily made up of spongy tissue, called the corpora cavernosa and the corpus spongiosum, which runs along the length of the penis. These tissues fill with blood during arousal, leading to an erection. The corpus spongiosum contains the opening of the urethra, termed the external urethral orifice, and the penile raphe, which is the visible ridge between the lateral halves of the penis. The corpora cavernosa contains spongy tissue and arteries that run along its middle. When the muscles around the corpora cavernosa relax, blood flows into its open spaces, creating pressure that causes the penis to swell and stiffen.
The spongy tissue segments of the penis hold blood for erectile function, and they are protected by the tunica albuginea, a fibrous tissue. If the corpus cavernosum or spongiosum is damaged, it can make erections painful or impossible, and a penile fracture can occur. A penile fracture occurs when an erect penis is bent to the point of "breaking", causing internal bleeding and damaging the necessary erectile structures.
The pelvic floor muscles support the structure of the penis, and there are several muscles at the root of the penis that aid in maintaining erections and expelling urine and semen. These include the bulbospongiosus, ischiocavernosus, and the external sphincter muscle. The pelvic bones also play a role in male sexual health, providing support and protection for the pelvic organs, including the bladder, prostate gland, and reproductive organs.
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The penis contains muscle fibres
The penis is not a muscle or a bone, but it does contain muscle fibres. The penis is a complex organ made up of erectile tissues, connective tissues, blood vessels, glands, and specialised tissues. The penis is made up of three cylinders: two corpora cavernosa and one corpus spongiosum, known as the corpus cavernosum penis. The corpora cavernosa are two spongy cylinders that fill with blood during arousal, leading to an erection. The corpus spongiosum is the third cylinder, which lies ventrally. The male urethra runs through the corpus spongiosum.
The root of the penis contains two muscles: the ischiocavernosus and the bulbospongiosus. The ischiocavernosus muscle surrounds the left and right crura of the penis. It contracts to force blood from the cavernous spaces in the crura into the corpora cavernosa, helping to maintain an erection. The bulbospongiosus muscle is associated with the bulb of the penis and contracts to empty the spongy urethra of any residual semen and urine. The anterior fibres of the bulbospongiosus also aid in maintaining an erection by increasing the pressure in the bulb of the penis.
The penis also contains smooth muscle fibres in the corpora cavernosa and the vessels. These smooth muscle fibres regulate blood flow, and their relaxation is necessary to treat certain cases of erectile dysfunction. The tunica albuginea, which is the fibrous tissue that protects the corpora cavernosa and the corpus spongiosum, also contains smooth muscle.
While the penis does contain muscle fibres, it is important to note that the penis itself is not a muscle. The penis is surrounded by muscles that help make movement and urination possible, but these muscles do not make up the structure of the penis itself.
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The penis can break
The penis is not a muscle or a bone, but rather a complex organ made up of erectile tissues, connective tissues, and blood vessels. It is a collection of blood vessels, vascular structures, connective tissue, and nerves. The penis does not contain any bones whatsoever. It is primarily made up of spongy tissue – called the corpora cavernosa and the corpus spongiosum – that runs along the length of the penis.
However, the penis can break, and this is known as a penile fracture. This occurs when an erect penis is forcibly bent, twisted, or knocked hard enough. It can also occur if you try to bend it. The penis is somewhat resistant to penetrating injury owing to its location and relative mobility. The penis is shielded by the surrounding bony pelvis posteriorly and upper thighs laterally, which helps prevent injury. The corpora cavernosa and corpus spongiosum (the spongy tissue segments that hold blood for erectile function) and tunica albuginea (the fibrous tissue that protects them) are tissues that can be damaged, potentially causing internal bleeding and damaging the necessary erectile structures. When the corpus cavernosum or spongiosum is damaged, it can make erections painful or impossible.
A penile fracture is an emergency and usually requires prompt surgery to avoid long-term injury and permanent dysfunction of the penis. Symptoms of a penile fracture will be immediately obvious and will start right after the injury. Men who fracture their penises say they hear a loud pop or snapping or popping sound and feel immediate pain. Blood vessels in the cavernosa usually rupture and cause bruising and swelling straight away. If the tissue around the tunica albuginea also ruptures, blood can pass into the scrotum or abdominal cavity.
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Frequently asked questions
No, the penis is not a bone. It does not contain any bones whatsoever.
No, the penis is not a muscle. It is made up of a mix of tissues, glands, and muscle fibers that work together to create an erection.
The penis is a complex organ made up of erectile tissues, connective tissues, and blood vessels. It is also composed of specialized tissues, glands, and some muscle fibers that help with erectile function.
Yes, the penis can break. This injury is called a penile fracture and occurs when an erect penis is bent to the point of "breaking."
