In human development, which germ layer gives rise to the muscles, connective tissue, and bone and blood vessels?
A) the endoderm
B) the mesoderm
C) the ectoderm
D) the blastoderm

Question

Quizplus · Accepted Answer

The mesoderm gives rise to the muscular, connective, and skeletal tissues as well as the circulatory system. The endoderm develops into the lining of internal organs and the digestive system, whereas the ectoderm gives rise to the nervous system, skin, and other tissues. The blastoderm is not a germ layer, but rather a stage in early embryonic development.

In Human Development, Which Germ Layer Gives Rise to the Muscles