Biology Module 3 - 3.sexual reproduction in humans 3.12 discuss the possible effects of maternal behaviour on foetal development

3.12 discuss the possible effects of maternal behaviour on foetal development



Nutrient

• energy - growth and metabolism of uterus, placenta, foetus and breasts

Biology Module 3 - 3.sexual reproduction in humans 3.11 discuss the functions of the amnion

3.11 discuss the functions of the amnion
   

• amnion secretes and contains amniotic fluid and acts as a shock absorber and supports foetus

• fluid isolates foetus from gravity

Biology Module 3 - 3.sexual reproduction in humans 3.10 explain the structure and functions of the placenta

3.10 explain the structure and functions of the placenta



Structure of the placent


Diagram of structure of placenta

source

Biology Module 3 - 3.sexual reproduction in humans 3.9 discuss how knowledge of human reproductive anatomy and physiology has been applied to the development of contraceptive methods

3.9 discuss how knowledge of human reproductive anatomy and physiology has been applied to the development of contraceptive methods

surgical

• male sterilization - each vas deferens is tied and cut by a surgeon. 

Biology Module 3 - 3.sexual reproduction in humans 3.8 discuss how and where fertilization and implantation normally occurs

3.8 discuss how and where fertilization and implantation normally occurs

Fertilization occurs when the nucleus of a sperm fuses with the nucleus of a female gamete in the oviduct

• Semen is ejaculated into the vagina; sperm become capaciated so swim more strongly rapidly

Biology Module 3 - 3.sexual reproduction in humans 3.7 discuss importance of hormones in control of the menstrual cycle

3.7 discuss importance of hormones in control of the menstrual cycle

LH - Luteinizing hormone
FSH - follicle stimulating hormone
GnRH - Gonadotropin-releasing hormone


oogeneis

• GnRH from the hypothalamus is produced which stimulates production of FSH.

Biology Module 3 - 3.sexual reproduction in humans 3.6 explain how hormones regulate gametogenesis

3.6 explain how hormones regulate gametogenesis

LH - Luteinizing hormone
FSH - follicle stimulating hormone
GnRH - Gonadotropin-releasing hormone


spermatogenesis

• pituitary gland secretes LH which travels in the blood to the interstitial cells of the testes

Biology Module 3 - 3.sexual reproduction in humans 3.5 discuss how the structure of the ovum and sperm suit their function

3.5 discuss how the structure of the ovum and sperm suit their function





Functions of sperm

• deliver haploid nucleus with set of paternal chromosome to female gametes

• restore diploid number

Biology Module 3 - 3.sexual reproduction in humans 3.4 compare the structure of ovum and sperm

3.4 compare the structure of ovum and sperm
  




Sperm cell        

structure - head - acrosome and nucleus                
               - middle - mitochondria
               - tail - axial filament              

Mobility - swims by lashing movement of filament

Biology Module 3 - 3.sexual reproduction in humans 3.3 explain gametogenesis

3.3 explain gametogenesis

gametogenesis - process by which gametes are produced


spermatogenesis is the production of sperm in the seminiferous tubules 

diagram on spermatogenesis

Biology Module 3 - 3.sexual reproduction in humans 3.1 describe the structure and function of the male and female reproductive system

3.1 describe the structure and function of the male and female reproductive system


                         male reproductive system

diagram of male reproductive system