Which of the following are formed from the ectoderm?Multiple choice question.Nervous system and epidermisNervous system and thyroid glandSkeletal system and epidermisMuscular system and thyroid gland
Question
Which of the following are formed from the ectoderm?Multiple choice question.Nervous system and epidermisNervous system and thyroid glandSkeletal system and epidermisMuscular system and thyroid gland
Solution
The correct answer is "Nervous system and epidermis".
Here's why:
The ectoderm is one of the three primary germ layers in the very early embryo. The other two layers are the mesoderm (middle layer) and endoderm (most proximal layer), with the ectoderm as the most exterior layer.
The ectoderm develops into the nervous system, including the brain and spinal cord, and the epidermis, which is the outer part of the skin.
Therefore, the correct answer is "Nervous system and epidermis". The other options involve systems that are not primarily formed from the ectoderm. For example, the skeletal and muscular systems are primarily formed from the mesoderm, and the thyroid gland is primarily formed from the endoderm.
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