Human Reproduction and Development - Numerical Applications
Q. At what week does the heart start to beat in a developing fetus?
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A.
4 weeks
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B.
6 weeks
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C.
8 weeks
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D.
10 weeks
Solution
The heart starts to beat around 6 weeks of gestation.
Correct Answer: B — 6 weeks
Q. How many chromosomes are present in a human sperm cell?
Solution
A human sperm cell contains 23 chromosomes.
Correct Answer: A — 23
Q. How many stages are there in human labor?
Solution
There are three stages in human labor: dilation, expulsion, and placental.
Correct Answer: C — 3
Q. What is the average duration of human gestation?
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A.
28 weeks
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B.
36 weeks
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C.
40 weeks
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D.
44 weeks
Solution
The average duration of human gestation is approximately 40 weeks.
Correct Answer: C — 40 weeks
Q. What is the average length of a human newborn at birth?
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A.
40 cm
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B.
50 cm
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C.
60 cm
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D.
70 cm
Solution
The average length of a human newborn at birth is approximately 50 cm.
Correct Answer: B — 50 cm
Q. What is the primary hormone responsible for maintaining pregnancy?
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A.
Estrogen
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B.
Progesterone
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C.
Testosterone
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D.
Oxytocin
Solution
Progesterone is the primary hormone responsible for maintaining pregnancy.
Correct Answer: B — Progesterone
Q. What is the typical volume of amniotic fluid at 36 weeks of pregnancy?
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A.
200 mL
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B.
500 mL
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C.
800 mL
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D.
1000 mL
Solution
The typical volume of amniotic fluid at 36 weeks is about 800 mL.
Correct Answer: C — 800 mL
Q. What is the typical weight range of a full-term newborn?
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A.
1-2 kg
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B.
2-3 kg
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C.
3-4 kg
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D.
4-5 kg
Solution
The typical weight range of a full-term newborn is 3-4 kg.
Correct Answer: C — 3-4 kg
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