Final answer:
The cortex of the Suprarenal gland originates from the mesoderm germ layer.
Step-by-step explanation:
The cortex of the Suprarenal gland, also known as the adrenal cortex, originates from the mesoderm, one of the three embryonic germ layers. The adrenal glands, located on top of the kidneys, are composed of the adrenal cortex, which is the outer part, and the adrenal medulla, which is the inner part. The adrenal cortex is further divided into three zones: the zona glomerulosa, the zona fasciculata, and the zona reticularis, each producing its own set of hormones such as mineralocorticoids, glucocorticoids, and androgens respectively.