Zoology

What is Adrenal Gland? Definition of Adrenal Gland The adrenal glands, or suprarenal glands, are small, triangular-shaped endocrine glands located on top of each kidney. They consist of two main parts: the adrenal cortex, which produces steroid hormones such as cortisol and aldosterone, and the adrenal medulla, which produces catecholamines like adrenaline. These hormones play … Read more

What is Parathyroid Gland? Definition of Parathyroid Gland The parathyroid glands are small endocrine glands located behind the thyroid gland that regulate calcium levels in the blood by secreting parathyroid hormone (PTH). This hormone helps maintain calcium balance by influencing the bones, kidneys, and intestines. Anatomical Location of Parathyroid Gland The parathyroid glands are small, flattened, … Read more

What is Pituitary Gland? Definition of Pituitary Gland The pituitary gland is a small, pea-sized endocrine gland located at the base of the brain, beneath the hypothalamus. It is often termed the “master gland” because it produces and secretes hormones that regulate various bodily functions, including growth, metabolism, and reproduction, and controls the activity of … Read more

What is Pineal Gland? Definition of Pineal Gland The pineal gland is a small, pea-shaped endocrine gland located in the brain, responsible for producing the hormone melatonin, which regulates sleep-wake cycles and circadian rhythms. It responds to light exposure, influencing various biological processes in the body. Location of Pineal Gland Structure of Pineal Gland The structure … Read more

What is Endocrinology? Definition of Endocrinology Endocrinology is the branch of medicine and biology that studies the endocrine system, its glands, and the hormones they produce. It focuses on how hormones regulate various physiological processes, including growth, metabolism, reproduction, and behavior, as well as the diagnosis and treatment of hormonal disorders. History of endocrinology Endocrinology, … Read more