Discussion
Which one of the options correctly matches the human tissues/organs with their embryonic germ layers of origin?
| Tissues/organs | Embryonic germ layers |
|---|---|
| (P) liver | (I) ectoderm |
| (Q) cerebellum | (II) endoderm |
| (R) femur | (III) mesoderm |
Answer: A
The correct match is P-II, Q-I, R-III.
- The liver grows from the embryonic gut tube, so it is endodermal.
- The cerebellum is part of the brain, which develops from the neural tube, so it is ectodermal.
- The femur, like other bones of the limbs, arises from mesoderm.
The other options swap these, for example deriving the liver from mesoderm or the femur from ectoderm.
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