Placenta Functions - PDF
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This document discusses the functions of the placenta, providing details on its role in providing nutrients and oxygen to the developing embryo. It also includes diagrams illustrating the placenta's structure and connection to the embryo and the mother.
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# The Functions of The Placenta ## Provides - O<sub>2</sub> - Glucose - Amino acids - Lipids, fats, fatty acids - Vitamins and minerals - Drugs - Alcohol - Nicotine - Antibodies - Viruses (HIV) ## Drains - CO<sub>2</sub> - Urea - Wastes ## Secretes - Progesterone + estrogen **Diagram**: A circle...
# The Functions of The Placenta ## Provides - O<sub>2</sub> - Glucose - Amino acids - Lipids, fats, fatty acids - Vitamins and minerals - Drugs - Alcohol - Nicotine - Antibodies - Viruses (HIV) ## Drains - CO<sub>2</sub> - Urea - Wastes ## Secretes - Progesterone + estrogen **Diagram**: A circle with the label "PLACENTA" attached to a line extending outwards and writing "uterine wall". The circle is surrounded by many small, squiggly circles labeled "Placental Villi". The line from the placenta continues outward to a larger circle labeled "Yolk Sac", with a line continuing to the circle labeled "Allantois". There is another line branching off the circle labeled "PLACENTA", leading to a smaller circle labeled "Embryo." ## Amnion - Protection from physical damage - Shock absorption - Even pressure ## Chorion - Allows restricted movement - Prevents sticking of the fetus to the amnion ## Amniotic Fluid ### Diagram**: A circle labelled "OVUM". The circle is marked with many other circles around it labeled "Corona Radiata". Inside the circle, a smaller, darker circle is labeled "Zona Pellucida". Leading from the circle labeled "OVUM" is a line that splits into a Y-shape. The left-hand side of the Y-shape line goes to a circle labeled "UMBELICAL CORD". The right-hand side of the Y-shape line goes to the circle labeled "PLACENTA". **Diagram**: A circle labeled "PLACENTA" with many squiggly circles around it labeled "Placental Villi". There is also a small circle labeled "Alantois" within the larger circle labeled "PLACENTA" and the line labeled "U.C" exits the circle "PLACENTA" and goes to the circle labeled "Baby". Also, there is an arrow pointed towards the circle labeled "PLACENTA" from outside and is labeled "Amnion". - Protection from physical damage (The amniotic sac) - Shock absorption - Even pressure (To maintain the shape of the fetus)
