GCSE Biology - Contraception | Hormonal vs Non-Hormonal Contraception (2026/27 exams) скачать в хорошем качестве

GCSE Biology - Contraception | Hormonal vs Non-Hormonal Contraception (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. Introduction to Contraception Definition: Artificial methods used to prevent pregnancy. Categorisation: Hormonal and non-hormonal methods. 2. How Pregnancy Starts Overview of the menstrual cycle hormones (FSH, LH). Process of ovulation, fertilisation, and implantation. 3. Hormonal Methods of Contraception Mechanisms involving oestrogen (inhibiting egg release) and progesterone (thickening cervical mucus). Examples discussed: Combined pill, progesterone-only pill, contraceptive patch, injection, implant, and hormonal intrauterine device (IUD). General effectiveness and potential side effects. 4. Non-Hormonal Methods of Contraception How these methods prevent sperm from meeting the egg. Barrier methods: Condoms (male and female), diaphragm, and their role in preventing sexually transmitted diseases (STDs). Spermicides: How they work and their reliability. Copper IUD: Mechanism of action (killing sperm). Sterilisation: Surgical methods for females (tubal ligation) and males (vasectomy). Natural methods: Brief mention and their unreliability. Abstinence as the only 100% effective method. ** CHAPTERS ** 0:00 Introduction to Contraception 0:28 How Pregnancy Starts 1:50 Hormonal Methods 2:00 Oestrogen's Role in Contraception 2:14 Progesterone's Role in Contraception 2:27 Combined Oral Contraceptive Pill 2:53 Progesterone-Only Pill 3:02 Contraceptive Patch 3:19 Contraceptive Injection 3:30 Contraceptive Implant 3:44 Intrauterine Device (IUD) - Hormonal & Copper 4:55 Non-Hormonal Methods 5:07 Condoms (Male & Female) and STD Protection 5:31 Diaphragm 5:43 Spermicide 5:58 Sterilisation (Female & Male) 6:31 Natural Methods & Abstinence ** PLAYLISTS **    • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #GCSE #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE