Module 6:Human Health and

Physiology

6.6 Reproduction

6.6.1 Draw and label diagrams of the adult male and female reproductive systems.

VI

VII

6.6.1 Draw and label diagrams of the adult male and female reproductive systems.

IIIIII

IV

V

VI VII

VIII

6.6.3 Outline the role of hormones in the menstrual cycle, including FSH (follicle stimulating hormone), LH (luteinizing hormone), estrogen and progesterone.

Hypothalamus

Anterior lobe pituitary gland

GnRHGnRH

Ovaries

Endometrium of uterus

FSHFSHLHLH

Progesterone (after day 14)Progesterone (after day 14)OestrogenOestrogen

Negative feedback

Negative feedback

6.6.3 Outline the role of hormones in the menstrual cycle, including FSH (follicle stimulating hormone), LH (luteinizing hormone), estrogen and progesterone.

Hormone Secreted by

Target Function

FSH

LH

Oestrogen

Progesterone

6.6.3 Outline the role of hormones in the menstrual cycle, including FSH (follicle stimulating hormone), LH (luteinizing hormone), estrogen and progesterone.

Hormone Secreted by

Target Function

FSH Pituitary gland

Ovaries • Follicular growth• Stimulates oestrogen secretion• Ovulation (day 14)

LH Pituitarygland

Ovaries • Ovulation (day 14)• Stimulates less oestrogen and more

progesterone• After ovulation, it forms corpus

leuteum

Oestrogen Follicles Endometrium • Thickening of lining• Inhibit FSH/LH (negative feedback)• Falls by 21-24days if no fertilisation

Progesterone Corpus leuteum

Endometrium • Maintains lining• Inhibit FSH/LH (negative feedback)• Falls by 21-24 days if no fertilisation

6.6.4 List three roles of testosterone in males.

1. Determines male genitalia development during embryonic development

2. Development of secondary sex characteristics during puberty

3. Maintains life-long sex drive

6.6.5 Outline the process of in vitro fertilization (IVF)

6.6.5 Outline the process of in vitro fertilization [8 marks]

6.6.6 Discuss the ethical issues associated with IVF.