No, GnRH or gonadotropin releasing hormone is not a steroid, but rather a peptide (type of protein) hormone.
GnRH-gonadotropin realeasing hormone
GnRH, short for gonadotropin-releasing hormone, is released by the part of the brain known as the hypothalamus. At the beginning of the menstual cycle, the hypothalamus releases GnRH. The GnRH then stimulates a different part of the brain, the pituitary gland, to produce two hormones, follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
FSH-Follicle stimulating hormone
Insulin is a protein hormone therefore it is a non-steroid hormone.
It is produced by Hypothalamus.It stimulates production FSH and LH.
It is secreted by pitutory.Stimulated by GnRH secreted by Hypothalamus.
where are receptors for non-steroid hormones located
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The hypophysial portal system carries gonadotropin-releasing hormone (GnRH) from the hypothalamus to the anterior pituitary. It stimulates the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary.
Both! Lutenising hormone is a hormone, it is a steroid hormone (affecting the growth/development of reproductive organs). It is present in both females and males :)