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Pituitary gland and its Hormones in Detail

Pituitary Gland and its Hormones in Detail

While we are  going to discuss about pituitary gland and its hormones we have to start with The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans..It is divided into an anterior adenohypophysis and a smaller posterior neurohypophysis.It is a protrusion off the bottom of the hypothalamus at the base of the brain, and rests in a small, bony cavity (sella turcica) covered by a dural fold (diaphragma sellae).

The posterior pituitary

The posterior pituitary (or neurohypophysis) is a lobe of the gland that is functionally connected to the hypothalamus by the median eminence via a small tube called the pituitary stalk (also called the infundibular stalk or the infundibulum).

The anterior pituitary (or adenohypophysis) is a lobe of the gland that regulates several physiological processes (including stress, growth, reproduction, and lactation). The small gland attached to the hypothalamus and coched in the sphenoin bone,  sits in the hypophysial fossa, situated in the sphenoid bone in the middle cranial fossa at the base of the brain. The pituitary gland secretes nine hormones that regulate homeostasis.supplying numerous hormones that govern many vital processesStudying about Pituitary gland and its Hormones in Detail with their Regulatory Hypothalamic Factors are very important in the field of Endocrinology.

Intermediate lobe of pituitary gland

Although rudimentary in humans (and often considered part of the anterior pituitary), the intermediate lobe located between the anterior and posterior pituitary is important to many animals. For instance, in fish, it is believed to control physiological color change. In adult humans, it is just a thin layer of cells between the anterior and posterior pituitary. The intermediate lobe produces melanocyte-stimulating hormone (MSH), although this function is often (imprecisely) attributed to the anterior pituitary.

pituitary gland and its hormones

Image of the Pituitary gland

Pituitary Hormones and its harmones with their Regulatory Hypothalamic Factors

S.No.

Hormone

Regulatory Factors

1.

Growth hormone (STH) Somatotropin – releasing factorSomatotrpin release inhibiting hormone

2.

Cortocotropin (ACTH) Corticotropin releasing factor (CRF)

3.

Thyrotropin (TSH) Thyrotropin releasing hormone (TRH)

4.

Follicle Stimulating hormone (FSH) Gonadotropin releasing

5.

Luteinzing Hormone hormone (GnRH)

6.

Prolactin Prolactin releasing factor

7.

Melanocyte Stimulating MSH releasing factor
Hormone (MSH) MSH release inhibiting factor

Hormones of anterior pituitary  (Adenohypophysis)

Growth Growth hormone (GH)
Failure Follicle stimulating hormone (FSH)
Leads Luteinising hormone (LH)
To Thyroid stimulating hormone (TSH)
A Adrenocorticotrophic (ACTH)
Miniature Melanocyte stimulating (MSH)
Person Prolactin

Hormones of posterior pituitary (neurohypophysis)

Oxytocin,Vasopressin (antidiuretic harmone)



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