The nurse is reviewing the embryonic primary germ layers with a group of students. Which structures should the nurse identify as being formed from the mesoderm? Select all that apply
1. Nails
2. Liver
3. Spleen
4. Muscles
5. Skeleton
3, 4, 5
Explanation:
1. The nails originate from the ectoderm.
2. The liver originates from the endoderm.
3. The spleen originates from the mesoderm.
4. The muscles originate from the mesoderm.
5. The skeleton originates from the mesoderm.
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