Group I and Group II hormones and their mechanism of action
On the basis of location of the receptors to which they bind and the signals used to mediate their action, hormones are classified into two […]
Endocrine system
Differences between Adrenal Cortex and Adrenal Medulla
S.N. Adrenal cortex Adrenal medulla 1. It is the external firm region of the adrenal gland. It is the central soft region of the adrenal […]
Differences between Exocrine and Endocrine glands
S.N. Exocrine glands Endocrine glands 1. These glands have ducts. These glands lack ducts. 2. Chemical substance secreted by exocrine glands is called enzyme. They […]
The gonads and other endocrine glands in human body
Gonads: Gonads are the organs that produce gametes. One pair of ovaries (in females) and a pair of testes (in males) are the gonads that […]
Structure and functions of pancreas
Pancreas (mixed gland) Location and structure: The pancreas is an elongated (12 to 15 cm), fleshy organ consisting of head, body and tail. It is […]
Adrenal glands (the emergency glands)
Adrenal glands (The emergency glands) Two pyramid-shaped adrenal glands rest on the top of each kidney, hence also called supra-renal glands. Each adrenal gland actually […]
Thyroid and Parathyroid glands
Thyroid and Parathyroid glands Thyroid gland: Location and structure: It is the largest endocrine gland located in the neck, anterior to the trachea. It consists […]
Pituitary gland (The master gland)
The endocrine system is made up of tissues or organs (collectively called glands) which secrete a chemical substance called hormone. Hormone is a specialized chemical […]
Hormonal regulation of ovulation and menstruation in women
The male is continuously fertile from puberty to old age and sex hormones are secreted throughout that period in a constant rate. However, in case […]