Adrenal gland is :-a)Ectodermal in originb)Mesodermal in originc)Endodermal in origind)Ecto - mesodermal in originCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Adrenal gland is composed of 2 heterogeneous types of tissue. these tissues come from different embryological precursors. The CORTEX of adrenal gland is derived from MESODERM whereas the MEDULLA is derived from neural crest, that is ECTODERMAL in origin. So answer d is correct.

Answer

Answer

The correct answer is option 'D': Ecto-mesodermal in origin.

Explanation:
The adrenal gland is an endocrine gland located on top of each kidney. It consists of two main parts: the outer adrenal cortex and the inner adrenal medulla. The adrenal cortex and medulla have different embryological origins, which are responsible for their different functions and hormone production.

1. Adrenal Cortex:
The adrenal cortex is derived from the mesoderm, which is one of the three primary germ layers of the developing embryo. The mesoderm gives rise to various tissues and organs, including the adrenal cortex, which produces steroid hormones. The cortex is further divided into three layers: the zona glomerulosa, zona fasciculata, and zona reticularis, each producing different types of hormones such as mineralocorticoids, glucocorticoids, and androgens.

2. Adrenal Medulla:
The adrenal medulla, on the other hand, is derived from neural crest cells, which are of ectodermal origin. The neural crest cells migrate and differentiate into chromaffin cells in the adrenal medulla. These chromaffin cells produce catecholamines, such as adrenaline (epinephrine) and noradrenaline (norepinephrine), which are released in response to stress or sympathetic nervous system stimulation.

3. Ecto-Mesodermal Origin:
Since the adrenal gland consists of both the ectodermal-derived adrenal medulla and the mesodermal-derived adrenal cortex, it is considered to have an ecto-mesodermal origin. This means that different parts of the gland arise from different embryonic germ layers. The ectodermal origin of the adrenal medulla and the mesodermal origin of the adrenal cortex contribute to the diverse functions and hormone production of the adrenal gland.

In summary, the adrenal gland is ecto-mesodermal in origin, with the adrenal medulla derived from the ectoderm and the adrenal cortex derived from the mesoderm.

Answer

Because adrenal is emergency gland which increases blood pressure through heart with faster to release their hormone to make fast action with heart and other parts of body

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