The heart and the blood vessels of the circulatory system is derived from the:
The correct option is: B
Explanation of the correct option:
In humans, there are three germ layers found in the developing embryo. The outer layer is the ectoderm followed by the middle mesoderm and inner endoderm. From these germ layers, all the organs and organ systems are developed in the body.
The circulatory system consists of blood, blood vessels, and the heart. All these parts of the human circulatory system are derived from the mesoderm.
Explanation of the incorrect option:
Option A: Ectoderm generally gives rise to different types of epithelial tissues of the nervous system, tooth enamel, and the skin.
Option C: The endoderm gives rise to some epithelial cells and glands of the gastrointestinal tract, respiratory tract, and renal bladder.
Final answer: The heart and the blood vessels of the circulatory system is derived from the mesoderm.