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The penis is not a muscle, but it does contain some muscle. The root of the penis contains two muscles: the ischiocavernosus and the bulbospongiosus. The body of the penis, however, lacks muscles and consists mostly of corpora cavernosa, corpus spongiosum, and spongy urethra with supporting skin, connective tissue, and blood, lymph, and fascia. The penis gives the appearance of being an independent organ because of its skeletal muscle structures.
| Characteristics | Values |
|---|---|
| Does the penis contain muscle? | No, but it does contain erectile tissue and the corpus spongiosum is partially entrapped by skeletal muscle. |
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What You'll Learn
The penis is not a muscle
While the penis does contain muscle, it is not a muscle. The penis is composed of the glans penis, the corpus spongiosum with the bulb of the penis, and the paired corpora cavernosa. The middle portion of the penis, known as the body of the penis, lacks muscles and consists mostly of corpora cavernosa, corpus spongiosum, and spongy urethra with supporting skin, connective tissue, and blood, lymph, and fascia. The root of the penis, the most proximal and fixed part, contains two muscles: the ischiocavernosus and bulbospongiosus. The penis gives the appearance of being an independent organ because of its skeletal muscle structures.
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The penis contains skeletal muscle structures
The penis is not a muscle, but it does contain skeletal muscle structures. The human penis is composed of the glans penis, the corpus spongiosum with the bulb of the penis, and the paired corpora cavernosa. The corpus spongiosum is partially entrapped by the skeletal muscle. These encased tissues finally pass through and are regulated by the surrounding structures. The penis gives the appearance of being an independent organ because of its skeletal muscle structures. The middle portion of the penis is suspended and known as the body of the penis. The body of the penis lacks muscles and consists mostly of corpora cavernosa, corpus spongiosum, and spongy urethra with supporting skin, connective tissue, and blood, lymph, and fascia. The root of the penis contains two muscles: the ischiocavernosus and the bulbospongiosus.
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The penis is composed of the glans penis
The penis is not a muscle, but it does contain muscle. The penis is composed of the glans penis, the corpus spongiosum with the bulb of the penis, and the paired corpora cavernosa. The corpus spongiosum is partially entrapped by the skeletal muscle. The glans penis is the most distal part of the penis and is conical in shape. It is formed by the distal expansion of the corpus spongiosum. The glans penis is the tip or top portion of the penis, and is also known as the head or the bellend. It is the human male's most sensitive erogenous zone and primary anatomical source of sexual pleasure. The glans penis is present in the male reproductive organs of humans and most other mammals. It is externally lined with mucosal tissue, which creates a smooth texture and glossy appearance. The glans penis is a body of spongy erectile tissue that is moulded on the rounded ends of the two corpora cavernosa penis, extending farther on their upper than on their lower surfaces. The glans is supplied with nerve endings and is partly or wholly sheathed, except during erection, by a circular fold of skin, the prepuce. Fluids like urine and semen exit the penis through it.
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The penis contains the corpus spongiosum
The penis is not a muscle, but it does contain muscle. The middle portion of the penis, known as the body of the penis, lacks muscles. However, the root of the penis contains two muscles: the ischiocavernosus and the bulbospongiosus. The body of the penis consists mostly of corpora cavernosa, corpus spongiosum, and spongy urethra with supporting skin, connective tissue, and blood, lymph, and fascia. The corpus spongiosum is partially entrapped by the skeletal muscle. The glans, or head of the penis, is formed by the distal expansion of the corpus spongiosum.
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The penis is an independent organ
The penis is not a muscle, but it does contain muscle. The human penis is composed of the glans penis, the corpus spongiosum with the bulb of the penis, and the paired corpora cavernosa in which skeletal muscle structures and the continuing tunica albuginea completely surround and contain smooth muscle structures, which intermingle with fibrous tissue to form the wall of the sinusoids. The corpus spongiosum is partially entrapped by the skeletal muscle. These encased tissues finally pass through and are regulated by the surrounding structures. The penis gives the appearance of being an independent organ because of its skeletal muscle structures.
The middle portion of the penis is suspended and known as the body of the penis. The body of the penis lacks muscles and consists mostly of corpora cavernosa, corpus spongiosum, and spongy urethra with supporting skin, connective tissue, and blood, lymph, and fascia. The root of the penis contains three erectile tissues (two crura and bulb of the penis), and two muscles (ischiocavernosus and bulbospongiosus). The glans is the most distal part of the penis. It is conical in shape, and is formed by the distal expansion of the corpus spongiosum.
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Frequently asked questions
No, the penis is not a muscle.
The penis is made up of three cylinders covered in a sheath called the buck fascia. These cylinders include the corpus spongiosum and two corpora cavernosa, known as the corpus cavernosum penis.
The muscles around the corpus cavernosum are responsible for erections. When these muscles relax, blood flows into the open spaces of the corpus cavernosum.
