animation
IVF video
Testis Structure HL
animation
Spermatogenesis HL
animation animationPearson overview
Spermatogenesis and hormones HL
Production of semen HL
Epididymis:• testicle fluids are removed and the sperm concentrated • sperm mature here and develop the ability to swim
Seminal vesicles:• adds nutrients that include fructose sugar for respiration • mucus to protect sperm in the cell
Prostate:• adds fluids that neutralise the vaginal acids and minerals ions
Ovary Structure HL
Ovary Structure HL
Oogenesis HL
Oogenesis HL
Spermatogenesis versus Oogenesis HL
Similarities:• Both begin with mitosis• Both make use of LH and FSH• Both include two meiotic reduction division
Differences: HOMEWORK!
http://wps.aw.com/bc_martini_eap_4/40/10469/2680242.cw/index.html
Sperm and Egg cell HL
Fertilisation HLhttp://www.uchsc.edu/ltc/fert.swf
Embryo development HL
HCG:• Secretion of Progesterone and Estrogen by Corpus Luteum• Progesterone and Estrogen inhibit FSH-LH – so no more eggs are released• Progesterone maintain endometrium, where the blastocyst develops into a fetus and the placenta forms
HCG
ProgesteroneEstrogen
Placental structure: HL
Placental villi
Hormonal Control of Birth HL
Hormonal Control of Birth HL
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