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 funct... 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 facilitates the exchange of nutrients and oxygen from the mother to the baby while removing waste products from the baby to the mother.
It also produces hormones such as progesterone, which are crucial for maintaining the pregnancy.
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 and transports carbon dioxide and waste products from the baby back to the placenta for disposal.
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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The uterus contracts, signaling that labor is about to begin.
The cervix opens (dilates) to allow the passage of the baby.
The amniotic sac breaks, leading to the release of amniotic fluid.
The baby is pushed out through the birth canal, and the placenta and umbilical cord are expelled shortly after the birth.
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