Question

Rudiments of all organs develop during what stage of human gestation period?
A. in the second trimester
B. in the first trimester
C. during the blastocyst stage
D. in the third trimester​

Answer 1

Answer:B: in first trimester

Explanation:

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Answer 2

Rudiments of all organs develop during B. in the first trimester of the human gestation period.

The gestation period in humans:

• Human gestation lasts 280 days, or 40 weeks, from the first day of the woman's last menstrual period.
• A pregnancy is divided into three stages known as trimesters: the first, second, and third trimesters.
• A trimester lasts 12 to 14 weeks, while a full-term pregnancy lasts approximately 40 weeks from the first day of a woman's last period.
• For pregnancy to occur, sperm must collide with an egg.
• Pregnancy begins when a fertilized egg implants in the uterine lining.
• Pregnancy can occur up to 2-3 weeks after having sex.

1st trimester:

• During the first trimester, your baby develops from a fertilized ovum to a fetus measuring around 6cm in length at 12 weeks.
• Your baby's heart begins to beat at the end of the first trimester, and the brain, stomach, and intestines are developing.
• A healthy first trimester is critical to the fetus's normal development.
• You may not be showing much on the exterior, but on the inside, all of the fetus's key organs and systems are developing.

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