The diagram shows a baby in the womb - Junior Cycle Science - Question b - 2011
Question b
The diagram shows a baby in the womb. The placenta and umbilical cord are labelled.
(i) Give two functions of the placenta.
1
2
(ii) What is the function of the ... show full transcript
Worked Solution & Example Answer:The diagram shows a baby in the womb - Junior Cycle Science - Question b - 2011
Step 1
Give two functions of the placenta.
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Answer
The placenta provides nutrients and oxygen to the baby.
It allows the removal of waste products (such as carbon dioxide and urea) from the baby.
Step 2
What is the function of the umbilical cord, which connects the baby to the placenta?
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Answer
The umbilical cord carries nutrients and oxygen from the placenta to the baby while transporting waste products (like carbon dioxide) from the baby back to the placenta.
Step 3
Describe, briefly, four events that occur at the end of pregnancy (i.e. just before birth, at birth and just after birth).
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Answer
The uterus contracts to initiate labor.
The amniotic sac breaks, releasing amniotic fluid.
The baby is pushed out, and the umbilical cord is cut.
The placenta and umbilical cord are expelled, and the mother begins producing milk.
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