Human Reproduction LC Biology

Term Definition
Gonad An organ that produces sex cells in animals
Testes Develop inside the body, but a few weeks before birth descend into the scrotum
Male Gonads Testes
Epididymis Sperm mature and are stored here
Sperm Duct Brings sperm to the Urethra
Urethra Responsible for carrying sperm and urine out of the body
Seminal Fluid Nourishes the sperm and provides a medium in which to swim
Penis Places the sperm in the female body
(sperm) Acrosome Contains digestive enzymes
(sperm) Nucleus Contains 23 Chromosomes
(sperm) Collar Contains mitochondria
(sperm) Flagellum Allows sperm to swim
The Ovary Produce the eggs and the female hormones Oestrogen and Progesterone
The Fallopian Tube Funnels at the tip of each tube catch the egg after it is released from the ovary and the egg is either fertilised or dies here
The Uterus (Womb) Muscular structure approximately the size of your fist
The Cervix Separates the Uterus from the Vagina
Endometrium Inner lining of the Uterus. This lining thickens each month with cells and blood vessels to nourish the embryo
Vagina Elastic muscular tube cm long. Allows entry of sperm
Graafian Follicle Structure that surrounds the egg and it produces the female hormone Oestrogen
Corpus Leuteum (yellow body) yellow cells
The Menstrual Cycle 28 day sequence that produces an egg and prepares the body for pregnancy
Menopause The end of a woman's reproductive life
Sexual Arousal The penis becomes erect.The vagina becomes lubricated
Copulation The penis is inserted into and moved inside the vagina
Orgasm Sperm is released from the penisContraction of vagina and uterus
Ejaculation Sperm is released from the penis
Insemination Release of sperm into the female
Fertilisation The fusion of the egg and sperm nuclei to form a diploid zygote
Acrosome Releases enzymes to digest the egg membrane
Implantation The embedding of the fertilised egg into the lining of the uterus
Amnion Membrane that develops around the embryo which secretes amniotic fluid which will surround the developing embryo and act as a shock absorber.
Chorion After implantation the embryo forms and outer membrane called a chorion
Lactation The secretion of milk from the mammary glands

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