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Category Archives for "Endocrinology"

Endocrinology is the study of Hormones. This category includes Structure, classification, function and its mechanism.

What is Pituitary Gland and its Secretions?

The human Pituitary gland is reddish–Grey, an oval structure about 10mm in diameter in the brain just behind the optic chiasma as an extension of the field the hypothalamus. The average weight of the gland in females is a 0.5–0.6gm and in males is 0.6 to 0.7 gm.  The Pituitary gland location below the Hypothalamus of […]

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  • Updated April 8, 2019

What is Endocrine system and its secreting Hormones

The study of Endocrine glands and their functions are called ‘Endocrinology’ the term introduced by PENDE. Vertebrates has been attained their systems in evolution. The systems are Respiratory system, Circulatory system, excretory system, Digestive system, Nervous system, Endocrine system and some other systems. In this there are two integrated systems functioning in Homeostasis in vertebrates […]

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  • Updated May 28, 2016

What are the Hormones of Gonads and its functions

The Gonads (testes in males, ovaries in females) perform closely related dual functions. Synthesize Sex hormones Produce Germ Cells The steroid sex hormones (gonads secretions) are responsible for growth, development, maintenance and regulation of reproductive system. Sex hormones are essentially required for the development of germ cells. Hormones of Gonads: The sex hormones are categorized […]

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  • Updated May 28, 2016

Hormonal Action: How Hormones are working in Animals

Hormonal action at the cellular level begins with the association of the hormone and its specific receptor. Hormone can be classified by the nature of the signal (or) second messenger used to mediate hormonal action within the cell. A number of these second messengers have been defined, but for several hormones the intracellular signal has […]

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  • Updated July 16, 2017

THYROID GLAND : Anatomy, Secretions and its Function

Anatomy of gland: The thyroid gland is the largest endocrine gland in the body. Thyroid Gland consists two lobes, locates either side of and anterior to the trachea just below the larynx. The two lobes are connected by a narrow bridge called “ISTHUMUS”, so the gland looks like ‘H’ shape. The weight of the thyroid […]

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  • Updated January 19, 2017

Adrenal Hormones : Glands and its Secretions

Adrenal gland locates on the topside of the kidney. In human, two adrenals are present on each kidney. Histologically, the adrenal has two distinct parts namely, An outer covering called the “Cortex” surrounding by an inner dark-colored mass called the “Medulla”. Adrenal Cortex: The adrenal cortex is made up of three layers, Zona Glomerulosa: Outer […]

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  • Updated April 7, 2015