The male organ for copulation.
The male genital organ, which also passes urine.
The male organ of sexual reproduction, made up largely of spongy tissue, which on stimulation fills with blood and becomes erect. Running through the penis is the urethra, the passageway for both urine and semen, exiting through an opening at the head of the penis, called the glans. A loose fold of skin over the glans is called the foreskin or prepuce, which is often removed in an operation called circumcision. Though small through childhood, the penis grows significantly larger with puberty as part of the development of secondary sexual characteristics. Among the disorders that may affect a child’s penis are balanitis, chordee, epispadias, hypospadias, paraphimosis, and phimosis.
External reproductive organ of the male, which contains the urethra through which urine and semen pass. Most of the organ is composed of erectile tissue that becomes engorged under conditions of sexual excitement, causing the penis to become erect; it is then capable of entering the vagina during coitus and discharging semen in ejaculation. Urination occurs without erection. Also called phallus.
External genitalia of the male, composed of erectile tissue.
The male sex organ through which urine and semen pass. The penis consists of three cylinders of spongy tissue that can engorge with blood and become erect during an erection. Through the center of the penis runs the urethra, the tube that carries urine out of the body. The urethral opening is at the tip of the penis. The end of the penis is covered with a flap of skin called the foreskin, which is sometimes surgically removed. During sexual arousal, semen (a thick liquid containing sperm), passes into the urethra; during ejaculation, muscles at the base of the penis contract and propel the semen out of the penis. Although both semen and urine pass through the urethra, they cannot pass through it simultaneously because an internal valve shuts during ejaculation to allow only semen to pass into the urethra.
The male organ that carries the urethra, through which urine and semen are discharged. Urination can occur in the normal hanging position. Most of the organ is composed of erectile tissue, which becomes filled with blood under conditions of sexual excitement so that the penis is erected. In this position it can act as a sexual organ, capable of entering the vagina and ejaculating semen.
The male organ through which the tubular urethra runs from the neck of the urinary bladder to the exterior at the meatus or opening. Urine and semen are discharged along the urethra, which is surrounded by three cylindrical bodies of erectile tissue, two of which (corpora cavernosa) lie adjacent to each other along the upper length of the penis and one (corpus spongiosum) lies beneath them. Normally the penis hangs down in a flaccid state in front of the scrotum. When a man is sexually aroused the erectile tissue, which is of spongy constituency and well supplied with small blood vessels, becomes engorged with blood. This makes the penis erect and ready for insertion into the woman’s vagina in sexual intercourse. The end of the penis, the glans, is covered by a loose fold of skin the foreskin or prepuce which retracts when the organ, is erect. The foreskin is removed when a male is circumcised.
The male organ of copulation and, in mammals, of urination. It is a cylindrical pendulous organ suspended from the front and sides of the pubic arch. It is homologous to the clitoris in the female.
The male reproductive organ that removes urine from the body and that can deliver sperm to the female reproductive system.
The male organ through which sperm and urine leave the body.
The male reproductive organ responsible for the passage of urine and semen.
The penis is composed of three cylindrical structures made of erectile tissue (spongy tissue filled with blood vessels) that extend its length. Positioned side by side along the upper segment of the penis are two of these structures, known as the corpora cavernosa. The third structure, called the corpus spongiosum, is centrally situated beneath them and enlarges at the tip to form the glans. Enveloping the erectile tissue is a protective covering composed of fibrous connective tissue enclosed by skin. The skin extends over the glans, forming a fold referred to as the foreskin.
The urethra, a slender tube responsible for transporting urine and semen out of the body, traverses the center of the corpus spongiosum. It exits through an opening located at the tip of the glans.
The primary roles of the penis include expelling urine and releasing semen during sexual intercourse.
A frequent issue is impotence, which involves the inability to achieve or sustain an erection. This concern impacts a majority of men at some stage in their lives and is typically rooted in psychological factors. Nonetheless, continuous impotence could arise from nerve impairment linked to conditions like diabetes mellitus, alcohol dependency, atherosclerosis, or spinal cord injury.
Balanitis, characterized by inflammation of the glans and foreskin, typically stems from candidiasis; however, other organisms like those responsible for gonorrhea and syphilis could also trigger inflammation. Balanitis might result in conditions like phimosis, where the foreskin becomes excessively tight, or paraphimosis, where the foreskin retracts during an erection but cannot be moved back over the glans.
Penile warts arise due to a sexually transmitted virus. While cancer of the penis is uncommon, its occurrence is more frequent in uncircumcised men compared to those who have undergone circumcision.
The prevailing innate irregularity of the penis is hypospadias, a state wherein the urethral opening is positioned on the underside of the penis. In male pseudohermaphroditism, another congenital condition, the penis is markedly small and hypospadias is commonly observed as well.
Additional penile disorders encompass priapism, characterized by a painful and unusually prolonged erection, and Peyronie’s disease, which leads to a bent erect penis.