Liver Excess amino acids Explain how concentration of urine is controlled by Explain how the body responds to increased hormone (ADH) concentration levels of carbon dioxide Increases the permeability of kidney tubules so Detected by the brain, increases breathing more water is reabsorbed into the blood Explain why high levels of carbon dioxide is toxic Controlled by negative feedback Makes blood acidic Describe the role of oestrogen Describe the role of progesterone Thickens lining of the uterus Maintains lining of the uterus Describe the role of FSH Describe the role of LH Stimulates development of the egg Causes ovulation (egg release) Negative feedback controls the menstrual cycle Explain how the contraceptive pill works Progesterone inhibits FSH Progesterone to stop eggs from developing Describe artificial insemination to treat infertility Describe use of FSH to treat infertility Sperm placed in woman’s uterus Describe in vitro fertilisation (IVF) to treat infertility Describe egg donation to treat infertility Fertilisation outside of the body Uses donors eggs for IVF Describe surrogacy to infertility Describe ovary transplants to treat infertility Use another woman’s uterus Ovary from another woman transplanted Describe how foetal development can be checked, test for Down’s Syndrome Amniocentesis (look at sample of amniotic fluid) & Chromosomal Analysis (look at sample of placenta) Risk of miscarriage Explain causes of extremes in heights State where human growth hormone is made and where is effects Hormones Pituitary Gland, effects the long bones Describe how baby’s growth is monitored and why Explain causes of increased life expectancy in modern Check developing correctly Measure length, mass and head size Less industrial disease, healthier diet, modern treatments, better housing 3 problems in the supply of donor organs State 4 problems of using mechanical replacements of Shortage of donors organs Tissue match Size Size and age Power supply Materials used Body reactions Describe the 2 problems with transplants Explain why donors can be living Rejection You only need one kidney Immuno-suppressive drug treatment Part of the liver can be taken Describe the advantages of a register of donors Describe the disadvantages of a register of donors People can volunteer to donate their organs Are people too lazy to sign up?
Liver Excess amino acids Explain how concentration of urine is controlled by hormone (ADH) Increases the permeability of kidney tubules so more water is reabsorbed into the blood Controlled by negative feedback Explain how the body responds to increased concentration levels of carbon dioxide Detected by the brain, increases breathing Explain why high levels of carbon dioxide is toxic Makes blood acidic Describe the role of oestrogen Thickens lining of the uterus Describe the role of progesterone Maintains lining of the uterus Describe the role of FSH Stimulates development of the egg Describe the role of LH Causes ovulation (egg release) Negative feedback controls the menstrual cycle Progesterone inhibits FSH Explain how the contraceptive pill works Progesterone to stop eggs from developing Describe artificial insemination to treat infertility Sperm placed in woman’s uterus Describe use of FSH to treat infertility Describe in vitro fertilisation (IVF) to treat infertility Fertilisation outside of the body Describe egg donation to treat infertility Uses donors eggs for IVF Describe surrogacy to infertility Use another woman’s uterus Describe ovary transplants to treat infertility Ovary from another woman transplanted Describe how foetal development can be checked, test for Down’s Syndrome Amniocentesis (look at sample of amniotic fluid) & Chromosomal Analysis (look at sample of placenta) Risk of miscarriage Explain causes of extremes in heights Hormones State where human growth hormone is made and where is effects Pituitary Gland, effects the long bones Describe how baby’s growth is monitored and why Check developing correctly Measure length, mass and head size Explain causes of increased life expectancy in modern Less industrial disease, healthier diet, modern treatments, better housing 3 problems in the supply of donor organs Shortage of donors Tissue match Size and age State 4 problems of using mechanical replacements of organs Size Power supply Materials used Body reactions Describe the 2 problems with transplants Rejection Immuno-suppressive drug treatment Explain why donors can be living You only need one kidney Part of the liver can be taken Describe the advantages of a register of donors People can volunteer to donate their organs Describe the disadvantages of a register of donors Are people too lazy to sign up?
b5_revision_summary_sheet.docx