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Flashcards in Sexual Reproduction Deck (38)
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1

Sexual reproduction

Production and fusion of gametes to form a zygote

2

Testis

Produces sperm and testosterone

3

Epididymis

Matured and stores sperm

4

Sperm duct

Carries speed from epididymis to urethra

5

Urethra

Allows passage of sperm and urine

6

Penis

Place sperm inside female body

7

Scrotum

Holds testes at lower temperature

8

Seminal vesicles

Secretes alkaline fluid - protects sperm in vagina

9

Prostate gland

Fluid nourishes and activates sperm

10

Coopers gland

Secretes mucus - neutralises urine in the urethra

11

Semen

Sperm + seminal fluid

12

FSH males

Follicle stimulating hormone
- produced by pituitary gland
- stimulates sperm
- meiosis occurs in testes

13

Testosterone

Develop secondary sex characteristics.
Secretes in testes

14

LH males

Luteinising Hormone
- pituitary gland
- testosterone to develop

15

Male secondary sex characteristics

Facial and pubic hair
Enlargement of larynx
Growth spurt

16

Ovary

Produces eggs, oestrogen and progesterone

17

Fallopian tube

Site of fertilisation.

18

Uterus

Site of implantation,
Hold embryo ,
Forms placenta

19

Vagina

Allows entry of sperm + exit of baby

20

Oestrogen

Produced in ovary , causes endometrium to develop

21

Progesterone

Produced by ovary, keeps endometrium built up, stops uterus from contracting

22

Female secondary sex characteristic

Enlargement of breasts
Widening of pelvis
Pubic and underarm hair

23

Menstrual cycle
Day 1-5

Uterus lining breaks down
Menstruation
New egg produced by meiosis
Surrounded by Graafian follicle

24

Menstrual cycle
Day 6-14

Oestrogen produced by GF
Uterus lining builds up again

25

Day 14 - menstrual cycle

Ovulation occurs
GF bursts and releases egg

26

Menstrual cycle
Day 14-28

GF develops into Corpus Luteum
Endometrium thickens

27

Menstrual disorder

Fibroids
Benign tumour in uterus wall , consists of muscle and connective tissues

28

Cause of fibroids
Symptoms
Treatment

Abnormal response to pill
Heavy bleeding , pain, infertility
Surgery

29

Labour stages

1. Dilation stage
2. Expulsion stage
3. Placental stage

30

Lactation

Secretion of milk from mammary glands

31

Benefits of breastfeeding

- essential antibodies (fight infection )
- balance of nutrients
- little fat - easier to digest

32

Birth control

Methods taken to limit number of children born

33

Abortion

Termination of pregnancy

34

Contraception

Deliberate prevention of fertilisation

35

Male contraception

Condoms
Spermicide
Sperm ducts cut and tied

36

Female contraception

No sex on fertile period
Diaphragms
The pill
Fallopian tunes cut and tied

37

In vitro fertilisation

Fertilisation outside the body

38

Male causes of infertility

Low sperm counts
Low sperm mobility
Endocrine gland failure