The human reproductive system Flashcards Preview

Grade 12 LS 2016 > The human reproductive system > Flashcards

Flashcards in The human reproductive system Deck (25):
1

Puberty

-reproductive organs grow to adult size -become functional

2

Reproductive system matures in humans...

During puberty 10-14 years for girls 12-16 years for boys

3

Sex hormones

Testosterone Oestrogen

4

Testosterone function in males

Stimulates reproductive organs to develop Sex drive Secondary sexual characteristics

5

Male primary sex organs

Gonads or testes Epididymis Bulbourethral gland Prostrate gland Seminal vesicle Penis

6

Male secondary sexual characteristics

Deep voice (enlarged larynx) Hair growth all over body (especially armpits, pubic region and beard) Enlarged skeletal muscles Heavier skeleton

7

Female primary sex organs

Ovaries Fallopian tubes Uterus Cervix Vagina Vulva

8

Function of testes in males

Make sperm by spermatogenesis Testosterone production

9

Secondary sexual characteristics in females

Breasts Growth underarm and pubic hair Widening of hips

10

Secondary sexual characteristics

Characteristics are features that distinguish the two sexes of a species Not directly part of the reproductive system

11

External sac holding testes

Scrotum

12

Location where sperm produced in testes

Seminiferous tubules

13

Interstitial cells

Produce testosterone in the testes

14

The physical process whereby sperm are released

Ejaculation

15

Semen includes

Sperm Secretions from: Seminal vesicle Prostrate gland Bulbourethral gland

16

A sensitive region of the penis covered by retractable skin, the foreskin

Glans

17

The three main regions of a sperm cell

Headpiece Midpiece Tail

18

Spermatogenesis

The process of producing mature sperm in the testes

19

Hormones regulating spermatogenesis

Follicle stimulating hormone (FSH) Testosterone

20

Follicle-stimulating hormone is secreted by...

The pituitary gland

21

Spermatogonia

Cells in the outermost layer of the seminiferous tubules (in testes) Form stem cells for sperm production

22

Cells involved in the stages of making sperm (spermatogenesis)

Spermatogonia Stem cells Primary spermatocyte Four haploid spermatids Late spermatids (developing) Sperm

23

Cell division that results in gametes

Meiosis

24

Follicles involved in oogenesis

Primary follicle Growing follicle Graafian follicle (Ovulation) Ruptured follicle Corpus luteum

25

Vagina function

1. Passageway for menstrual blood to leave the body 2. Receives penis and semen during copulation 3. Passageway for baby delivery