Reproductive cells (spermatozoa or oocytes) that contain half the normal chromosome complement.
Reproductive organs that produce gametes and hormones .
The fluid ejaculate that contains spermatozoa and the secretions of accessory glands of the male reproductive tract.
A cell whose meiotic divisions will produce a single ovum and three polar bodies.
The functional product of meiosis II, produced after the fertilization of a secondary oocyte.
A male gamete; also called sperm.
The loose-fitting fleshy pouch that encloses the testes of the male.
A muscular tube that carries urine from the urinary bladder to the exterior.
An accessory gland of the ale reproductive tract, contributing roughly one-third of the volume of semen.
A component of the male external genitalia; a copulatory organ that surrounds the urethra and serves to introduce semen into the female vagina; the developmental equivalent of the female clitoris.
The stiffening of the penis due to the engorgement of the erectile tissues of the corpora cavernous and corpus spongiosum.
The release of a secondary oocyte, surrounded by cells of the corona radiata, after the rupture of the wall of a tertiary follicle; in females, the periodic release of an oocyte from an ovary.
The muscular organ of the female reproductive tract in which implantation, placenta formation, and fetal development occur.
The inferior portion of the uterus.
A muscular tube extending between the uterus and the vestibule.
The mucous membrane lining the uterus.
The process of endometrial sloughing.
The termination of the uterine cycle. The time that ovulation and menstruation cease.
An elastic epithelial fold of variable size that partially blocks the entrance to the vagina.
The ejection of semen from the penis as the result of muscular contractions of the bulbospongiosus and ischiocavernosus muscles.
Ejaculation is associated with intensely pleasurable sensations, and experience known as male ______.
The failure of one or both testes to descend into the scrotum by the time of birth.
The failure of menarche to appear before age 16, or a cessation of menstruation for six months or more in a female of reproductive age.
The growth of endometrial tissue outside the uterus.
The inability to achieve or maintain an erection.
The surgical removal of part or all of a breast containing cancerous glandular tissue.
The examination of breast tissue.