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Biology: 41 - Human Reproduction > Definitions > Flashcards

Definitions Flashcards

1
Q

What is a gonad?

A

A gonad is an organ that produces sex cells in animals

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2
Q

What is semen?

A

Semen is a fluid containing sperm and seminal fluid

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3
Q

What is puberty?

A

Puberty is the beginning of sexual maturity

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4
Q

What are secondary sexual characteristics?

A

Secondary sexual characteristics are those features that distinguish males from females, apart from the sex organs themselves

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5
Q

What is infertility?

A

Infertility is the inability to produce offspring

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6
Q

What is ovulation?

A

Ovulation is the release of an egg from the ovary

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7
Q

What is the menstrual cycle?

A

The menstrual cycle is a series of events that occurs every 28 days on average in the female if fertilisation has not taken place

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8
Q

What is the menopause?

A

The menopause is when ovulation and menstruation stop happening in a female

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9
Q

What is menstruation?

A

Menstruation is the discharge of the lining of the uterus (the endometrium) and the unfertilised egg

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10
Q

What is copulation?

A

Copulation is the act of sexual intercourse

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11
Q

What is an orgasm?

A

An orgasm is the physical and emotional sensations experienced at the peak of sexual excitement

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12
Q

What is ejaculation?

A

Ejaculation is the release of semen from the penis

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13
Q

What is insemination?

A

Insemination is the release of semen into the vagina, just outside the cervix

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14
Q

What is fertilisation?

A

Fertilisation occurs when the nucleus of the sperm fuses with the nucleus of the egg, forming a diploid zygote

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15
Q

What is implantation?

A

Implantation is the embedding of the fertilised egg into the lining of the uterus

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16
Q

What is in-vitro fertilisation?

A

In-vitro fertilisation (IVF) involves removing eggs from an ovary and fertilising them outside the body

17
Q

What is a morula?

A

A morula is a solid ball of cells formed from a zygote by mitosis

18
Q

What is a blastocyst?

A

A blastocyst (or blastula) is a hollow ball of cells formed from a morula

19
Q

What are germ layers?

A

Germ layers are basic layers of cells in the blastocyst from which all adult tissues and organs will form

20
Q

What is gestation?

A

Gestation is the length of time spent in the uterus from fertilisation to birth

21
Q

What is lactation?

A

Lactation is the secretion of milk by the mammary glands (breasts) of the female

22
Q

What is birth control?

A

Birth control refers to methods taken to limit the number of children that are born

23
Q

What is contraception?

A

Contraception is the deliberate prevention of fertilisation or pregnancy

Biology: 41 - Human Reproduction (33 decks)

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