Multiple Choice
Which of the following is the middle layer of the trilaminar disc?
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28. Human Development
Embryonic Development (Weeks 3-8)
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
During embryonic development (weeks 3-8), which organ develops and is fully functional by the end of the first trimester?
A
Kidneys
B
Liver
C
Lungs
D
Heart
Verified step by step guidance1
Understand the timeline of embryonic development: The first trimester of pregnancy includes the first 12 weeks, and the embryonic period is from weeks 3 to 8.
Identify the major organ systems that begin to develop during the embryonic period: This includes the heart, brain, spinal cord, and other vital organs.
Focus on the heart: The heart is one of the first organs to develop and becomes functional early in the embryonic period.
Consider the functionality of the heart: By the end of the first trimester, the heart is fully formed and functional, allowing it to pump blood throughout the developing embryo.
Compare with other organs: The kidneys, liver, and lungs continue to develop and mature after the first trimester, whereas the heart is already functional by this time.
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