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The placenta plays an essential role in childbirth. It becomes
disposable after the baby is born which makes it the only organ in
the human body that serves a vital function and then becomes
obsolete. It is an extremely complex piece of biological equipment
which allows the mother's and the baby's blood to come into very
close contact, without mixing, to supply nutrients and oxygen to
the baby, and move waste products like carbon dioxide back from
baby to mother. Thus, the placenta acts as the lung, kidney and
digestive system for the baby. The placenta also plays an important
role in hormone production. Human chorionic gonadotropin is
produced by the placenta and can be found in the baby's blood as
early as 10 days into pregnancy. The placenta is also responsible
for the production of other hormones including oestrogen and
progesterone and protects the baby from possible infection or from
damage by substances found in the environment or used by the
mother, such as alcohol, drugs, pollutants and endocrine
disrupters. This book presents the reader with a comprehensive,
well written and informative collection of chapters written by
experts from around the world. It will be a valuable asset for
anyone interested in reproduction and pregnancy and wanting to
access excellent reviews as well as the most current discussion of
the biology and medicine of the placenta.
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Never Mind (Paperback)
Richard Nicholson
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R527
R454
Discovery Miles 4 540
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Covering the years 1890 to 1910, this volume profiles the boxers
who were acting during boxing's ""Golden Age,"" focusing primarily
on George ""Kid"" Lavigne, Bob Fitzsimmons, Barbados Joe Walcott,
Joe Gans, Terry McGovern, Sam Langford, and Stanley Ketchel. The
accomplishments of these competitors in and out of the ring, as
well as their standing in boxing history, are examined in detail.
Each boxer is presented in his historical context, and detailed
information about many of their opponents, also key figures in this
critical era of the sport, is also provided, as are comparisons to
recent fighters.
The images in this volume represent the work of one of North East
motorsport's best-loved characters, photographer Spencer Oliver,
who is recognised as one of the finest motorsport photographers
Britain has ever produced.
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