Which of the following statements is true of the layers of cells of an embryo?
A) The mesoderm develops into the nervous system and brain, sensory receptors, and skin parts.
B) The ectoderm primarily produces surface parts.
C) The endoderm is composed of the mesoderm and the ectoderm.
D) The mesoderm primarily produces internal body parts and sensory receptors.

Question

Quizplus · Accepted Answer

The ectoderm is the outermost layer of cells in an embryo and gives rise to surface parts such as skin, hair, and nails. The mesoderm develops into muscles, bones, and organs like the heart and kidneys, while the endoderm gives rise to the digestive and respiratory systems. None of the layers directly develop into the nervous system or brain, although the ectoderm gives rise to the neural tube which ultimately develops into the brain and spinal cord.

Which of the Following Statements Is True of the Layers