Glands
The human body contains a large number of different glands, which produce certain substances and important for the body called hormones, and a large part of these glands secrete hormones through channels and called the glands of the cannula, while others of the glands, they produce hormones without the need for these channels so that they are released directly into the blood , And then carries that blood to the body’s various organs so that each hormone performs its function in the body.
Types of glands in the human body
Endocrine or non-invasive
They are the secretions of the internal secretion and are:
- The pineal gland: It resembles a pine grain and is found inside the brain, which secrete a hormone responsible for regulating sleep and awakening in humans.
- Pituitary gland: It is one of the most important glands in the body, as it controls the most vital activities in the body.
- Thyroid: It is located directly under the pharynx, and produces hormones that regulate metabolic rates.
- The adrenal or renal glands are found above each kidney and produce multiple hormones with different functions in the body.
- Liver.
- Thyroid glands: The number of four glands, located behind the thyroid gland, secrete these glands parathormon hormone, which regulates calcium in the body.
The glands or the outer secretion
- Salivary glands: are found around the mouth and pharynx.
- Prostate: Located at the bottom of the bladder when a man.
- Lymph nodes: They are found in lymph vessels, and are found either under the skin or superficial or in the viscera.
- Parathyroid gland.
- Fatty gland.
- Ethnic gland: It is responsible for the secretion of sweat.
- The lacrimal gland: It is the secretion of tears.
- Mucous gland.
- Mammary gland.
- Thymus.
- Serous gland.
- Sperm.
- Urethral gland.
- The vaginal gland.
- Single gland.
- Glandula.
- Glandular compound.
- Tubular gland.
- Carotid artery gland.
Common or mixed glands
The glands that secrete hormones both internal and external:
- Testes: the male reproductive system, which are responsible for the production of sperm.
- Ovaries: the female genitalia, and are located in the lower abdomen, and their function is to produce eggs.
- Pancreatic: digested food, and is under the stomach, and there are many of the endocrine tissues that regulate the level of sugar in the blood.
Definition of the hormone
It is a natural chemical, produced by the glands, and secreted in certain quantities and specific, and often in small quantities, but the effect of large, and each hormone function in the body is carried out, and most of the hormones are separated in the body in the organization of functions of the organs of the human body and the most important of reproduction and growth and mental activity In addition to physical activity.