The Glandular System is also known as Endocrine System. It is made up of glands that produce and secrete hormones. There are only two types of glands in glandular system of human body exocrine gland and endocrine gland.
What are hormones?
Hormones are chemical substances, which are produced in the body. They help to regulate the activity of cells or organs. These hormones regulate the body’s growth, metabolism (the physical and chemical processes of the body), and sexual development and function. The hormones are released into the bloodstream. They may affect one or several organs throughout the body.
Hormones are chemical messengers, which are produced by the body. They transfer information from one set of cells to another to coordinate the functions of different parts of the body. The major glands of the endocrine system are the hypothalamus, pituitary, thyroid, parathyroid, adrenals, pineal body, and the reproductive organs (ovaries and testes). The pancreas is also a part of this system. It has a role to produce the hormone as well as in digestion.
What is gland?
A gland is a group of cells that produces and secretes chemicals. A gland selects and removes materials from the blood, processes them, and secretes the finished chemical product for use somewhere in the body. Some types of glands release their secretions in specific areas. For example, exocrine glands, such as the sweat and salivary glands, release secretions in the skin or inside of the mouth. Endocrine glands, on the other hand, release more than 20 major hormones directly into the bloodstream where they can be transported to cells in other parts of the body.
Types Of Glands In Human Body
The glandular system is made of many glands and organs. They have different functions and they work together to keep the body healthy. The endocrine glands are
- Pituitary Gland
- Parathyroid Glands
- Thyroid Gland
- Adrenal (suprarenal) Glands
- Pineal Gland (body)
- Thymus Gland
- Pituitary Gland: It is the most important gland in the body. It is very important to growth, mental development, and reproduction. It influences or controls the rest of the endocrine system.
- Thyroid Gland: It is located in the front of the neck. It releases hormones that control the metabolism’ and govern the way the body uses energy.
- Parathyroid: They are located behind the thyroid gland. They are essential for proper development of the bones.
- Adrenal Glands: They influence the way the body uses energy. They also release a hormone called adrenaline when the body is under stress.
- Pancreas: It releases the insulin in the body, which is necessary to metabolize sugar. If there are problems with the pancreas, it can lead to diabetes.
- Pineal Gland: It connects the endocrine system with the nervous system. It produces several important hormones, including melatonin. It is important to sleep and sexual development.
- Thymus: it is important to normal immune function in childhood. Once a child reaches puberty, its tissue is replaced by fat.
- Gonads: Ovaries: They produce estrogen and progesterone in women and also release egg cells. Testes: They produce the hormone, which is known as testosterone in men. Testosterone maintains sperm production.
- Hypothalamus: It is a part of the brain that controls hormone production by releasing different chemicals to the pituitary gland.
- Ovaries: They produce estrogen and progesterone in women and also release egg cells.
- Testes: They produce the hormone, which is known as testosterone in men. Testosterone maintains sperm production.
The endocrine system is composed of ductless glands (glands that do not have tubes). Endocrine glands secrete hormones, which are chemical “messengers” that travel through the blood to regulate the activity of a target organ.
Glands that have ducts are called exocrine glands. The secretions of exocrine glands reach their target by traveling through a duct (tube). Exocrine glands are not part of the endocrine system. Some examples of exocrine glands are-sweatglands and salivary glands.