Fertilisation and the Stages of Prenatal Development (VCE SSCE Health and Human Development): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why does the ovum change its surface after one sperm enters?
Why does the ovum change its surface after one sperm enters?
To block other sperm from entering
How many chromosomes does a zygote contain?
How many chromosomes does a zygote contain?
46 chromosomes in 23 pairs
What structure forms at about 5 days after fertilisation with 64 cells?
What structure forms at about 5 days after fertilisation with 64 cells?
Blastocyst
When does the blastocyst begin implanting into the endometrium?
When does the blastocyst begin implanting into the endometrium?
About 7 days after fertilisation
Why is the embryonic stage the most critical period of prenatal development?
Why is the embryonic stage the most critical period of prenatal development?
All major organs & systems form then
What is the first organ system to function during prenatal development?
What is the first organ system to function during prenatal development?
Circulatory system with beating heart
When is the placenta fully developed and functioning?
When is the placenta fully developed and functioning?
By 14 weeks of pregnancy
When is the developing baby referred to as a foetus?
When is the developing baby referred to as a foetus?
From week 9 onwards
What does surfactant do in foetal lung development?
What does surfactant do in foetal lung development?
Reduces tension & prevents air sac collapse
What can the foetus respond to around 25 weeks after fertilisation?
What can the foetus respond to around 25 weeks after fertilisation?
Light, sound, and touch