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biology reproduction

15.5 ~ 15.9

QuestionAnswer
Why shouldn't mothers smoke during pregnancy? nicotine and carbon monoxide cross the placenta and can result in premature or underweight babies
What is one of the common reasons for birth of premature babies? early breaking of the membrane (amnion) around the fetus is the most common reason
What is placenta which also came out called after the baby is born? Afterbirth
What are the benefits of breastfeeding for babies? Breast milk contains antibodies, which pass to the baby and give it passive immunity to the diseases mother recently had
Describe follicle small group of cells surrounding the egg together
Describe process follicles go through until it becomes yellow body follicle starts to develop. As it develops it enlarges and fills with fluid, moving towards the edge of the ovary. After 2 weeks follicle bursts releasing the egg/ fluid/ some follicle cells. The remainder forms the yellow body
What happens if fertilization do not occur? egg dies and passes out of vagina, yellow body breaks down, thick lining of uterus breaks down
What does FSH stand for and what does it do? Follicle Stimulating Hormone it starts the cycle by stimulating follicles development.
When is puberty? between ages 10 ~ 14
Which hormone stimulate male sexual characteristics? testosterone
Which hormone stimulate female sexual characteristics? Oestrogen
Describe Adolescent they are people who started puberty, and finishes around 18. These people can be emotional by hormones
Why do we use birth control? to not have babies/ disease partner has
What is the disadvantage for IUD it takes time for the woman to get fertile again if she decides to take the device out of her infertile uterus, so careful planning in advance is crucial
What does pills contain? concentrated hormones oestrogen and progesterone
what is vasectomy and why should it be thought over carefully? it is operation to cut males sperm tubes, making the man infertile. Men should be careful because this operation doesn't allow you to have any more children
what is HIV human immunodeficiency virus
what is AIDS acquired immunodeficiency Syndrome
what main cells does HIV virus attack? T-lymphocytes
how is gonorrhoea transmitted sexual intercourse
Created by: BIShan
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