Human Reproduction Flashcards
Gonad
Organ that produces sex cells in animals
Semen
Fluid containing sperm and seminal fluids
Puberty
Beginning of sexual maturity
Secondary sexual characteristics
Features that distinguish males from females apart from sex organs themselves
Infertility
Inability to produce offspring
Ovulation
Release of an egg from an ovary
Menstrual cycle
Series of events that occurs every 28 day’s on average in the female if fertilisation has not taken place
Menopause
When ovulation and menstruation stop happening in the female
Menstruation
Discharge of the lining of the uterus and the unfertilised egg
Copulation
Act of sexual intercourse
Orgasm
Physical and emotional sensations experiences at the peak of sexual excitement
Ejaculation
Release of semen from the penis
Insemination
Release of semen inside the vagina outside the cervix
Fertilisation
When the nucleus of the sperm fuses with the nucleus of the egg forming a diploid zygote
Implantation
Embedding of the fertilised egg into the lining of the uterus
IVF
Involves removing eggs from an ovary and fertilising outside of the body
Morula
Solid ball of cells formed from a zygote by mitosis
Blastocyst
Hollow ball of cells formed from a morula
Germ layers
Basic layer of cells in a blastocyst from which all adult tissues and organs will form
Gestation
Length of time spent in the uterus from fertilisation to birth
Lactation
Secretion of milk by the mammary glands of the female
Birth control
Methods taken to limit the number of children that are born
Contraception
Deliberate prevention of fertilisation or pregnancy
