In the early embryo, the nervous system and epidermis are derived from the:
A)ectoderm
B)mesoderm
C)endoderm
D)intraderm

Question

Quizplus · Accepted Answer

The ectoderm is one of the three primary germ layers formed during embryogenesis. It gives rise to the nervous system (including the brain and spinal cord) and the epidermis (outermost layer of the skin). The mesoderm gives rise to the musculoskeletal system, circulatory system, and other internal organs, while the endoderm gives rise to the respiratory and digestive systems. Intraderm is not a recognized embryonic layer.

In the Early Embryo, the Nervous System and Epidermis Are