All about Human Hormones (N-Z)


List of Human Hormones (N-Z)


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The following is a list of hormones found in humans.




Neuropeptide Y

increased food intake and decreased physical activity

Norepinephrine (or noradrenaline)

Fight-or-flight response:

Boosts the supply of oxygen and glucose to the brain and muscles (by increasing heart rate and stroke volume, vasoconstriction and increased blood pressure, breakdown of lipids in fat cells. Increase skeletal muscle readiness.


wakefulness and increased energy expenditure, increased appetite


release breast milk

Contraction of cervix and vagina Involved in orgasm, trust between people. and circadian homeostasis (body temperature, activity level, wakefulness)

Pancreatic polypeptide

self regulate the pancreas secretion activities (endocrine and exocrine), it also effects on hepatic glycogen levels and gastrointestinal secretions.

Parathyroid hormone

increase blood Ca2+: *indirectly stimulate osteoclasts

Ca2+ reabsorption in kidney

activate vitamin D

(Slightly) decrease blood phosphate:

(decreased reuptake in kidney but increased uptake from bones

activate vitamin D)


Support pregnancy:

Convert endometrium to secretory stage Make cervical mucus permeable to sperm. Inhibit immune response, e.g. towards the human embryo. Decrease uterine smooth muscle contractility Inhibit lactation Inhibit onset of labour. Support foetal production of adrenal mineralo- and glucosteroids.

Other: Raise epidermal growth factor-1 levels Increase core temperature during ovulation Reduce spasm and relax smooth muscle (widen bronchi and regulate mucus) Antiinflammatory Reduce gall-bladder activity. Normalize blood clotting and vascular tone, zinc and copper levels, cell oxygen levels, and use of fat stores for energy. Assist in thyroid function and bone growth by osteoblasts Resilience in bone, teeth, gums, joint, tendon, ligament and skin Healing by regulating collagen Nerve function and healing by regulating myelin Prevent endometrial cancer by regulating effects of oestrogen.


milk production in mammary glands
sexual gratification after sexual acts

Prolactin releasing hormone

Release prolactin from anterior pituitary






Unclear in humans


Activates the renin-angiotensin system by producing angiotensin I of angiotensinogen


Secretion of bicarbonate from liver, pancreas and duodenal Brunner's glands

Enhances effects of cholecystokinin Stops production of gastric juice


Controls mood, appetite, and sleep


Inhibit release of GH and TRH from anterior pituitary
Suppress release of gastrin, cholecystokinin (CCK), secretin, motilin, vasoactive intestinal peptide (VIP), gastric inhibitory polypeptide (GIP), enteroglucagon in gastrointestinal system
Lowers rate of gastric emptying

Reduces smooth muscle contractions and blood flow within the intestine
Inhibit release of insulin from beta cells
Inhibit release of glucagon from alpha cells
Suppress the exocrine secretory action of pancreas.


libido, Anabolic: growth of muscle mass and strength, increased bone density, growth and strength,

Virilizing: maturation of sex organs, formation of scrotum, deepening of voice, growth of beard and axillary hair.


produce platelets



Thyroid-stimulating hormone (or thyrotropin)

secrete thyroxine (T4) and triiodothyronine (T3)

Thyrotropin-releasing hormone

Release thyroid-stimulating hormone (primarily)
Stimulate prolactin release

Thyroxine (or tetraiodothyronine) (a thyroid hormone)

less active form of thyroid hormone: increase the basal metabolic rate & sensitivity to catecholamines,

affect protein synthesis

Triiodothyronine (a thyroid hormone)

potent form of thyroid hormone: increase the basal metabolic rate & sensitivity to catecholamines,

affect protein synthesis


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