Chapter12-The Reproductive System And Genetics Flashcards Preview

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Flashcards in Chapter12-The Reproductive System And Genetics Deck (27):
1

What is sexual reproduction?

It is the ability to produce new individuals, a characteristic of life, human reproduce sexually

2

What is a gamete?

A sex cell, male are sperm, female are eggs

3

What is fertilisation?

When a male and female gamete fuse to form a new cell called a zygote.

4

Name 5 parts of the male reproductive system

Penis, scrotum, testes, sperm duct, prostate gland and seminal vesicles.

5

Name 5 parts of the female reproductive system

Vagina, cervix, Fallopian tubes, uterus, ovaries

6

What is puberty?

The time when the sex organs mature no other physical and emotional changes take place

7

What are 4 changes in puberty of boys?

Voice breaks and deepens
Sexual organs grow in size
Increase in body muscle
Pubic hair and hair on face, chest, underarms grows

8

What are 4 changes in puberty of girls?

Sexual organs grow in size
Breasts enlarge and hips widen
Ovaries begin to produce eggs and Montreal cycle begins
Pubic hair and hair on underarms begins to grow

9

What is the menstrual cycle?

A series of changes that takes place in the female body lasting about 28 days.

10

When does a period start?

Between day 1-5 of menstrual cycle

11

What is the purpose of the menstrual cycle?

To produce an egg and prepare the womb for pregnancy

12

What is ovulation?

The release of the egg from the ovary, usually occurring on the 14th day

13

When does the fertile period occur?

Day 11-17

14

What happens during the fertile period?

Ovary releases the egg and the lining of the uterus thickens with blood

15

What happens during sexual intercourse?

The erect penis is placed inside the vagina and the semen in ejaculated.

16

Where does fertilisation occur?

In the Fallopian tube.

17

What is implantation?

The attachment of the embryo to the lining of the womb

18

How long does human pregnancy last?

About 40 weeks

19

What happens during pregnancy?

Placenta forms to nourish baby and remove waste and baby is surrounded by amniotic fluids.

20

What is the birth of the baby caused by?

Contraction of muscles in the womb

21

Name 4 methods of contraception.

Condoms, contraceptive 'pill', natural methods, abstinence fro sexual intercourse

22

What are genetics?

The study of heredity

23

What are inheritable characteristics?

Ones caused by genes such as eye/hair colour

24

What are non-inheritable characteristics?

One that must be learned such as how to read/write

25

What are chromosomes made of?

DNA and protein

26

How many chromosomes are in the human body?

23 pairs

27

Where are genes found?

Along the lengths of chromosomes