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A gonad, sex gland, or reproductive gland [1] is a mixed gland and sex organ that produces the gametes and sex hormones of an organism. Female reproductive cells are egg cells, and male reproductive cells are sperm. [2] The male gonad, the testicle, produces sperm in the form of spermatozoa. The female gonad, the ovary, produces egg cells.
Specialized glands within the human integumentary system # Name Precursor gland derived from [3] Anatomic location 1 Ceruminous gland: Apocrine: Ear canal: 2 Mammary gland: Apocrine: Breast 3 Moll's gland: Apocrine: Eyelid margin 4 Tyson's gland: Sebaceous: Genital skin 5 Meibomian gland: Sebaceous: Tarsal plate: 6 Gland of Zeis: Sebaceous
Adenocarcinoma of the gland is rare and benign tumors and hyperplasia are even more rare. [18] Bartholin gland carcinoma [19] is a rare malignancy that occurs in 1% of vulvar cancers. This may be due to the presence of three different types of epithelial tissue. [8] Inflammation of the Skene's glands and Bartholin glands may appear similar to ...
ot. The genital ridge from which either the ovary or testis is formed. o. The left ovary: t. Testis in the place of its original formation; t', together with the dotted lines above, indicates the direction in which the testis and epididymis descend from the abdomen into the scrotum. Skene's glands a.k.a. paraurethral gland: pr. Prostate: u. Uterus.
In placental mammals, females have two genital orifices, the vaginal and urethral openings, while males have one genital orifice in the penis where urine and semen exit the urethra during urination and ejaculation. [14] Male and female genitals have many nerve endings, resulting in pleasurable and highly sensitive touch. [15]
The genital ridge continues to grow behind the developing peritoneal membrane. By week six, string-like cell congregations called primitive sex cords form within the enlarging genital ridge. Externally, a swelling called the genital tubercle appears above the cloacal membrane. [4] The mesoderm extends to the midventral line.
The second category are the ejaculatory fluid producing glands which include the Cowper's gland (also called bulbourethral gland), seminal vesicles, prostate, and vas deferens. The final category are those used for copulation and deposition of the sperm within the female; these include the penis, urethra, and vas deferens. [3]
Structures opening in the vulval vestibule are the urethra (urinary meatus), vagina, Bartholin's glands, and Skene's glands. [1]The external urethral orifice is placed about 25–30 millimetres (1–1.2 in) [2] behind the clitoris and immediately in front of that of the vagina; it usually assumes the form of a short, sagittal cleft with slightly raised margins.