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Multiple Choice
Which embryonic layers give rise to all of the body's mature tissues?
A
Mucosa, submucosa, and serosa
B
Periosteum, endosteum, and perichondrium
C
Epidermis, dermis, and hypodermis
D
Ectoderm, mesoderm, and endoderm
Verified step by step guidance
1
Understand that the question is asking about the embryonic layers, also known as germ layers, which are the primary layers of cells in the early embryo that give rise to all tissues and organs in the body.
Identify the three primary germ layers: ectoderm, mesoderm, and endoderm. These layers form during the process of gastrulation in the early stages of embryonic development.
Recognize that the ectoderm is the outermost layer and gives rise to structures such as the skin, nervous system, and parts of the eyes and ears.
Acknowledge that the mesoderm is the middle layer and is responsible for forming tissues such as muscle, bone, blood vessels, and the heart.
Note that the endoderm is the innermost layer and develops into the lining of the digestive and respiratory systems, as well as organs like the liver and pancreas.