Endocrine System Of A Man. The endocrine system s a glandular system and the man’s endocrine system consists of twenty ductless glands lying on different body parts.

The Hypothalamus, a part of our brain plays a major role in the secretion of these glands.

Neurosecretory Role Of The Hypothalamus

Hypothalamus is a part of our forebrain and physiological features like hunger, thirst, sleep, and temperature are regulated by the hypothalamus.

The hypothalamus is the master control center of the endocrine system.

Its endocrine signals directly control the pituitary gland, which also regulates a number of secretions in the human body.

It contains a special group of neurosecretory cells that conduct impulses and have a high capacity for secretion.

These cells produce regulatory hormones that regulate the synthesis and secretion of the pituitary gland.

The hormones produced by the hypothalamus are either stimulating factors, that stimulate the secretions of hormones, or inhibiting factors, that inhibit the secretion of hormones.

These are produced in the cell bodies and packed into the granules.

They are passed down to the axon by cytoplasmic streaming.

The axon then synapses with the blood capillaries and then ren releases its hormones in the blood when stimulated.

Endocrine System Of A Man. Nuerosecretory hormones that arise from the hypothalamus, produce two primary hormones.

Antidiuretic hormone and vasopressin, are stored in the posterior lobe of the pituitary gland.

And are released from there whenever needed.

Hormone from the hypothalamus                                             Pituitary hormones response

Growth hormone releasing factor.                                                    Secretion of growth hormone.

Somatostatin                                                                                     Inhibition of growth hormone.

Thyrotrophine releasing factor.                               Secretion of thyroid-stimulating hormone

Adrenocorticotrophin releasing factor.                   Secretion of adrenocorticotrophic hormone.

Prolactin inhibiting factor.                                       Inhibits secretion of prolactin.

Gonadotrophin-releasing hormone.                        Secretion of FSH and LH