Endocrine Glands

Also called

hormones · pituitary gland · growth hormone · thyroid gland · thyroxine · iodine · goitre · adrenal gland · adrenaline · pancreas · insulin · diabetes · testes · ovaries · testosterone · oestrogen · feedback mechanism · chemical coordination · अंतःस्रावी ग्रंथियाँ · हार्मोन · थायरॉक्सिन

Topics

• Endocrine glands have no ducts: they release hormones straight into the blood, which carries them to target organs.
• The pituitary gland in the head makes growth hormone; too little gives dwarfism and too much gives gigantism.
• The thyroid in the neck makes thyroxine, which sets the body’s rate of using carbohydrates, proteins and fats.
• Thyroxine needs iodine; without iodised salt the thyroid swells into a goitre.
• Adrenaline from the adrenals readies the body for an emergency: faster heartbeat and breathing, blood to the muscles.
• Insulin from the pancreas lowers blood sugar after a meal; too little insulin causes diabetes.
• Testes make testosterone and ovaries make oestrogen, the hormones that bring on the changes of puberty.
• Feedback keeps hormone levels right: high thyroxine in the blood makes the pituitary send less TSH to the thyroid.

About this model

A GLB file of about 747 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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