Incorrect Option of Hormone and its Target Organ/Tissue

Oxytocin
- Target Organ/Tissue: Mammary Gland and Smooth Muscle of Uterus

PTH
- Target Organ/Tissue: Bones

GnRH
- Target Organ/Tissue: Gonads

Aldosterone
- Target Organ/Tissue: Renal Tubules

Explanation:

Oxytocin is a hormone that is produced by the hypothalamus and released by the pituitary gland. It is responsible for the contraction of the smooth muscles of the uterus during childbirth and the ejection of milk from the mammary glands during breastfeeding.

PTH or Parathyroid Hormone is produced by the parathyroid glands and is responsible for regulating calcium levels in the blood. It acts on the bones by stimulating the release of calcium from the bones into the bloodstream.

GnRH or Gonadotropin-releasing hormone is produced by the hypothalamus and is responsible for the stimulation of the pituitary gland to release the gonadotropin hormones that regulate the function of the gonads. In males, it stimulates the release of testosterone, and in females, it stimulates the release of estrogen and progesterone.

Aldosterone is a hormone produced by the adrenal glands and is responsible for the regulation of salt and water balance in the body. It acts on the renal tubules by promoting the reabsorption of sodium and the excretion of potassium.

Therefore, the incorrect option in the given list is not present, as all the options are correctly matched with their target organ/tissue.

PTH --> Bones...