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Human Reproduction: Terminology and Definitions
no Term Terminology / Definition
The primary male sex hormone and anabolic steroid.
1 testosterone In male humans, testosterone plays a key role in the development of male reproductive tissues
such as testes and prostate.
2 semen Sperm from the testis.
Seminal fluid from sperm duct and accessory glands.
3 erection stiffening of penis
4 ejaculation expulsion of semen
5 blastocyst An embryo begins its growth as a single cell, and then divides every 12-24 hours.
By Day 5, the embryo, now called a blastocyst, is about 70-100 cells.
6 oestrogen The primary female sex hormone. It is responsible for the development and regulation of the
female reproductive system and secondary sex characteristics.
The primary female sex hormone, produced mainly in the ovaries following ovulation each
7 progesterone month. It's a crucial part of the menstrual cycle and maintenance of pregnancy. After you
ovulate each month, progesterone helps thicken the lining of the uterus to prepare for a
fertilized egg.
8 myometrium Uterus muscular wall, thick muscle layer stretches when baby develops.
Forms the external genitalia.
9 vulva Protects the internal parts of the female reproductive system.
Plays no role in the reproductive process.
10 clitoris Small mass or erectile tissue found at the end of the vulva, counterpart of the male penis.
11 oestrous A time when females ovulate and can be impregnated.
Human Reproduction: Terminology and Definitions
no Term Terminology / Definition
The primary male sex hormone and anabolic steroid.
1 testosterone In male humans, testosterone plays a key role in the development of male reproductive tissues
such as testes and prostate.
2 semen Sperm from the testis.
Seminal fluid from sperm duct and accessory glands.
3 erection stiffening of penis
4 ejaculation expulsion of semen
5 blastocyst An embryo begins its growth as a single cell, and then divides every 12-24 hours.
By Day 5, the embryo, now called a blastocyst, is about 70-100 cells.
6 oestrogen The primary female sex hormone. It is responsible for the development and regulation of the
female reproductive system and secondary sex characteristics.
The primary female sex hormone, produced mainly in the ovaries following ovulation each
7 progesterone month. It's a crucial part of the menstrual cycle and maintenance of pregnancy. After you
ovulate each month, progesterone helps thicken the lining of the uterus to prepare for a
fertilized egg.
8 myometrium Uterus muscular wall, thick muscle layer stretches when baby develops.
Forms the external genitalia.
9 vulva Protects the internal parts of the female reproductive system.
Plays no role in the reproductive process.
10 clitoris Small mass or erectile tissue found at the end of the vulva, counterpart of the male penis.
11 oestrous A time when females ovulate and can be impregnated.
