Multiple Choice
Which of the following lists levels of human structure from the most complex to the simplest?
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1. Introduction to Anatomy & Physiology
Levels of Organization
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Which of the following structures is not derived from the mesoderm?
A
Liver
B
Heart
C
Muscles
D
Bones
Verified step by step guidance1
Understand the three primary germ layers in embryonic development: ectoderm, mesoderm, and endoderm. Each layer gives rise to specific tissues and organs in the body.
Identify the structures typically derived from the mesoderm. The mesoderm forms structures such as muscles, bones, the cardiovascular system (including the heart), and connective tissues.
Recognize the structures derived from the endoderm. The endoderm primarily forms the lining of the digestive and respiratory systems, including organs like the liver and pancreas.
Compare the list of structures in the problem with the typical derivatives of the mesoderm. Note that muscles, bones, and the heart are mesodermal derivatives.
Identify the structure that is not derived from the mesoderm. Since the liver is derived from the endoderm, it is the structure not derived from the mesoderm.
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