Adrenal gland is :

Options

A. Ectodermal in origin
B. Mesodermal in origin
C. Endodermal in origin
D. Ecto -mesodermal in origin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the origin of the adrenal gland in terms of germ layers. There are three primary germ layers in embryonic development: ectoderm, mesoderm, and endoderm.

2. **Analyzing the Options**:
- **Option 1: Ectodermal in origin**: This option suggests that the adrenal gland originates solely from the ectoderm. However, this is incorrect because the adrenal gland is not solely derived from the ectoderm.
- **Option 2: Mesodermal in origin**: This option implies that the adrenal gland originates only from the mesoderm. This is also incorrect as the adrenal gland has contributions from both ectoderm and mesoderm.
- **Option 3: Endodermal in origin**: This option states that the adrenal gland comes from the endoderm. This is incorrect as well since the endoderm is the innermost germ layer and does not contribute to the adrenal gland.
- **Option 4: Ectomesodermal in origin**: This option indicates that the adrenal gland originates from both ectoderm and mesoderm. This is the correct answer because the adrenal gland develops from neural crest ectoderm and intermediate mesoderm.

3. **Conclusion**: Based on the analysis of the options, the correct answer is that the adrenal gland is ectomesodermal in origin.

**Final Answer**: The adrenal gland is ectomesodermal in origin.

---