INI
Types of Hormones - INI
Hormones are chemical substances secreted by endocrine glands that act on target organs via the bloodstream. They are classified into three major categories: peptide hormones, steroid hormones, and amine hormones, with over 100 types including insulin, thyroid hormones, and adrenaline. Each plays essential roles in maintaining life, including metabolism, growth, reproduction, and stress response.
endocrine system
hormones
insulin
thyroid hormone
adrenaline
physiology
medicine
[item.insulin]
code=01
slug=insulin
name=Insulin
description=A peptide hormone secreted by beta cells in the islets of Langerhans in the pancreas.
category=Peptide Hormone
mainFunction=Lowers blood glucose, promotes cellular glucose uptake, stimulates glycogen synthesis
secretionGland=Pancreas (Beta cells of islets of Langerhans)
targetOrgan=Liver, skeletal muscle, adipose tissue
[item.glucagon]
code=02
slug=glucagon
name=Glucagon
description=A peptide hormone secreted by alpha cells in the islets of Langerhans in the pancreas.
category=Peptide Hormone
mainFunction=Raises blood glucose, promotes glycogen breakdown, stimulates gluconeogenesis
secretionGland=Pancreas (Alpha cells of islets of Langerhans)
targetOrgan=Liver
[item.thyroid-hormone]
code=03
slug=thyroid-hormone
name=Thyroid Hormone
description=Amine hormones secreted by the thyroid gland, including thyroxine (T4) and triiodothyronine (T3).
category=Amine Hormone
mainFunction=Promotes metabolism, regulates body temperature, growth and development, nervous system development
secretionGland=Thyroid gland
targetOrgan=Tissues throughout the body
[item.adrenaline]
code=04
slug=adrenaline
name=Adrenaline (Epinephrine)
description=An amine hormone secreted by the adrenal medulla, involved in fight-or-flight response during stress.
category=Amine Hormone (Catecholamine)
mainFunction=Increases heart rate, raises blood pressure, elevates blood glucose, dilates bronchi
secretionGland=Adrenal medulla
targetOrgan=Heart, blood vessels, lungs, liver
[item.cortisol]
code=05
slug=cortisol
name=Cortisol
description=A steroid hormone secreted by the adrenal cortex, known as the stress hormone.
category=Steroid Hormone (Glucocorticoid)
mainFunction=Elevates blood glucose, anti-inflammatory effects, immunosuppression, stress response
secretionGland=Adrenal cortex
targetOrgan=Liver, muscle, adipose tissue, immune cells
[item.growth-hormone]
code=06
slug=growth-hormone
name=Growth Hormone (GH)
description=A peptide hormone secreted by the anterior pituitary gland, essential for height growth.
category=Peptide Hormone
mainFunction=Promotes growth, protein synthesis, fat breakdown, cell proliferation
secretionGland=Anterior pituitary gland
targetOrgan=Bone, cartilage, liver, muscle, adipose tissue
[item.aldosterone]
code=07
slug=aldosterone
name=Aldosterone
description=A steroid hormone secreted by the adrenal cortex, important for electrolyte balance regulation.
category=Steroid Hormone (Mineralocorticoid)
mainFunction=Promotes sodium reabsorption, potassium excretion, blood pressure maintenance
secretionGland=Adrenal cortex (Zona glomerulosa)
targetOrgan=Kidney (renal tubules)
[item.testosterone]
code=08
slug=testosterone
name=Testosterone
description=The primary male sex hormone (androgen) mainly secreted by the testes.
category=Steroid Hormone (Sex Hormone)
mainFunction=Secondary sexual characteristic development, muscle mass maintenance, bone density preservation, sperm production
secretionGland=Testes (male), ovaries and adrenal glands (female)
targetOrgan=Reproductive organs, muscle, bone, skin
[item.estrogen]
code=09
slug=estrogen
name=Estrogen
description=The primary female sex hormone mainly secreted by the ovaries.
category=Steroid Hormone (Sex Hormone)
mainFunction=Secondary sexual characteristic development, menstrual cycle regulation, bone density preservation, pregnancy maintenance
secretionGland=Ovaries (mainly), placenta, adrenal glands
targetOrgan=Uterus, mammary glands, bone, skin, brain
[item.progesterone]
code=10
slug=progesterone
name=Progesterone
description=A female hormone secreted by the corpus luteum of the ovary, important for pregnancy maintenance.
category=Steroid Hormone (Sex Hormone)
mainFunction=Endometrial secretory transformation, pregnancy maintenance, basal body temperature elevation
secretionGland=Ovary (corpus luteum), placenta, adrenal glands
targetOrgan=Uterus, mammary glands, brain
[item.oxytocin]
code=11
slug=oxytocin
name=Oxytocin
description=A peptide hormone secreted by the posterior pituitary gland, also called the love hormone.
category=Peptide Hormone
mainFunction=Promotes uterine contractions, milk ejection, social bonding
secretionGland=Hypothalamus (production), posterior pituitary (secretion)
targetOrgan=Uterus, mammary glands, brain
[item.vasopressin]
code=12
slug=vasopressin
name=Vasopressin (ADH)
description=A peptide hormone secreted by the posterior pituitary gland, important for urine volume regulation.
category=Peptide Hormone
mainFunction=Urine concentration, promotes water reabsorption, increases blood pressure
secretionGland=Hypothalamus (production), posterior pituitary (secretion)
targetOrgan=Kidney (collecting ducts), blood vessels
[item.melatonin]
code=13
slug=melatonin
name=Melatonin
description=An amine hormone secreted by the pineal gland, important for regulating sleep-wake rhythm.
category=Amine Hormone
mainFunction=Sleep induction, circadian rhythm regulation, antioxidant effects
secretionGland=Pineal gland
targetOrgan=Brain (hypothalamus)
[item.parathyroid-hormone]
code=14
slug=parathyroid-hormone
name=Parathyroid Hormone (PTH)
description=A peptide hormone secreted by the parathyroid glands, important for calcium metabolism regulation.
category=Peptide Hormone
mainFunction=Increases plasma calcium concentration, promotes bone resorption, promotes calcium reabsorption
secretionGland=Parathyroid glands
targetOrgan=Bone, kidneys, intestines
[item.calcitonin]
code=15
slug=calcitonin
name=Calcitonin
description=A peptide hormone secreted by C cells of the thyroid gland, involved in calcium concentration regulation.
category=Peptide Hormone
mainFunction=Lowers plasma calcium concentration, promotes bone formation
secretionGland=Thyroid gland (C cells)
targetOrgan=Bone, kidneys