IGCSE Biology Sexual reproduction in humans 164

############################# Video Source: www.youtube.com/watch?v=9LWdEtdbixc

🎓 IGCSE Biology - The Complete Course: https://www.tes.com/teaching-resource... • 🎓 IGCSE Biology - Questions and Mark Schemes, Organised by Chapter: https://www.tes.com/teaching-resource... • ☕️ I don't charge anything for my videos, so your support would really help me to keep going! https://www.buymeacoffee.com/ArthurJo... • Cambridge IGCSE Biology (0610/0970) • Chapter 16 - Reproduction • Topic 16.4 - Sexual reproduction in humans • For exams in 2023, 2024 2025 (core and extended) • As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam! • My other channels: • ‪@igpecomplete‬Cambridge IGCSE PE • ‪@ocrpecomplete‬OCR GCSE PE • Timestamps: • 0:00 Contents • 0:44 Male reproductive system • 1:14 Female reproductive system • 1:50 Sperm and egg cells • 2:42 Fertilisation • 3:04 Embryo formation and implantation • 3:30 Placenta and umbilical cord • 3:59 Amniotic sac and fluid • 4:19 Placenta and umbilical cord (extended) • Core content: • Identify on diagrams and state the functions of the following parts of the male reproductive system: testes, scrotum, sperm ducts, prostate gland, urethra and penis. • Identify on diagrams and state the functions of the following parts of the female reproductive system: ovaries, oviducts, uterus, cervix and vagina. • Describe fertilisation as the fusion of the nuclei from a male gamete (sperm) and a female gamete (egg cell). • Explain the adaptive features of sperm, limited to: flagellum, mitochondria and enzymes in the acrosome. • Explain the adaptive features of egg cells, limited to: energy stores and the jelly coat that changes at fertilisation. • Compare male and female gametes in terms of: size, structure, motility and numbers. • State that in early development, the zygote forms an embryo which is a ball of cells that implants into the lining of the uterus. • Identify on diagrams and state the functions of the following in the development of the fetus: umbilical cord, placenta, amniotic sac and amniotic fluid. • Extended content: • Describe the function of the placenta and umbilical cord in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus. • State that some pathogens and toxins can pass across the placenta and affect the fetus. • Context: • 16.1 - Asexual reproduction: A process resulting in the production of genetically identical offspring from one parent. • 16.2 - Sexual reproduction: A process involving the fusion of the nuclei of two gametes to form a zygote and the production of offspring that are genetically different from each other. • 16.3 - Sexual reproduction in plants: Pollination, fertilisation and the structures of insect pollinated and wind-pollinated flowers, including petals, sepals, stamens, filaments, anthers, carpels, style, stigma, ovary and ovules. • 16.5 - Sexual hormones in humans: The roles of testosterone and oestrogen during puberty, the changes that occur in the ovaries and to the lining of the uterus during the menstrual cycle and the roles of FSH, LH, progesterone and oestrogen in controlling the menstrual cycle and pregnancy. • 16.6 - Sexually transmitted infections: Including HIV and AIDS.

#############################

New on site