List of Hormones in Human Body & their Functions

Hormones are the chemical messengers released inside the body.
They are the part of normal physiology and regulate the system based on the signals from brain.
They do directly make a signal on the respective organ system for the changes to happen.
So they are like messenger carrying message from the brain to the organs.
They are produced by secretory cells of specific glands.
These glands are of different types and release the hormone into the blood when blood flows through them. Hence they are termed as endocrine glands.
Like wise most of the hormones are named after the gland from which they are secreted.

These are then carried by blood into target tissues where they show their effect.

They regulate most of the body physiology and functions. They bring such changes by acting at the level of genetic material or protein formation machinery of the cell.

These hormones if deficient or if excess can lead to hormonal disorders. These can have deleterious effect on the health and physiology.

So how many hormones are there in the human body? Below is the comprehensive list with their functions.

List of human Hormones and their Functions
HypothalamusThyrotropin-releasing hormone (TRH)
Corticotropin-releasing hormone (CRH)
Growth hormone-releasing hormone (GHRH)
Growth hormone inhibitory hormone (GHIH) (somatostatin)
Gonadotropin-releasing hormone (GnRH)
Dopamine or prolactin-inhibiting factor (PIF)
Anterior pituitaryGrowth hormone
Thyroid-stimulating hormone (TSH)
Adrenocorticotropic hormone (ACTH)
Follicle-stimulating hormone (FSH)
Follicle-stimulating hormone (FSH)
Luteinizing hormone (LH)
Posterior pituitaryAntidiuretic hormone (ADH) (also called)
ThyroidThyroxine (T4) and triiodothyronine (T3)
Adrenal cortexCortisol
Adrenal medullaNorepinephrine, epinephrine
PancreasInsulin (β cells)
Glucagon (α cells)
ParathyroidParathyroid hormone (PTH)
PlacentaHuman chorionic gonadotropin (HCG)
Human somatomammotropin
HeartAtrial natriuretic peptide (ANP)
Small intestineSecretin
Cholecystokinin (CCK)
From the above list, the ones secreted by hypothalamus, anterior and posterior pituitary are formed in brain. While rest are formed outside the brain. Once released they are carried on by blood to different regions. The hormones on reaching the corresponding regions elicit their response.
It is quite interesting to see that the ones released from brain regulate the secretion of other hormones.
So it indicates that their secretion is controlled by brain and indirectly all the other hormones too. Thus the whole body physiology seems to be under the control of brain.
Any emotional disturbance to the brain can lead to alteration in secretion of these hormones. Thus
For a comprehensive understanding of origin of hormones and their function in the body refer to the article TYPES OF GLANDS & THEIR FUNCTION.

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  1. stephanie

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