The pituitary body, also known as the pituitary gland, is a pea-sized gland located at the base of the brain that secretes hormones essential for growth, metabolism, and reproduction. The spelling of "pituitary" is pronounced /pɪˈtjuːɪtəri/ in IPA phonetics. The word has roots in the Latin word "pituita" which means phlegm or mucus. The gland's name refers to its once-thought function of secreting phlegm into the nasal cavity. However, modern science has revealed the gland's critical role in maintaining human health.
The pituitary body, also known as the pituitary gland or hypophysis, is a small, pea-sized gland located at the base of the brain, within a hollow bony structure called the sella turcica. It is often referred to as the "master gland" due to its crucial role in regulating and controlling various bodily functions.
An integral part of the endocrine system, the pituitary body plays a pivotal role in maintaining homeostasis by producing and secreting hormones that regulate functions of several other glands in the body. It is divided into two main parts: the anterior pituitary and the posterior pituitary, each responsible for the production and release of distinct hormones.
The anterior pituitary produces and secretes a multitude of hormones that control essential bodily functions such as growth, metabolism, reproduction, and lactation. These include growth hormone, thyroid-stimulating hormone, adrenocorticotropic hormone, follicle-stimulating hormone, luteinizing hormone, and prolactin.
Conversely, the posterior pituitary stores and releases two hormones that are synthesized in the hypothalamus, which is a neighboring brain region. These hormones are oxytocin, primarily involved in labor contractions and lactation, and antidiuretic hormone, responsible for regulating water balance in the body.
Any dysfunction or abnormality in the pituitary body can lead to a wide range of disorders, including growth abnormalities, infertility, hormonal imbalances, and metabolic disorders. Such conditions often require medical intervention, hormone replacement therapy, or surgical procedures to restore normal functionality.
Hypophysis cerebri.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "pituitary" comes from the Latin word "pituita", meaning phlegm or mucus. This term was used to describe the substance secreted by the gland. The word "body" is used to refer to an anatomical structure. Therefore, "pituitary body" refers to the gland responsible for secreting pituita or mucus-like substance.