Fibroplasts are called cells of loose connective tissue, the main purpose of which is to synthesize the intracellular matrix. It is the basis of connective tissue, which provides transport of chemicals and mechanical support for cells. In addition, fibroplasts produce mucopolysaccharides, as well as protein precursors - elastin and collagen. Among the most important functions of these cells are the development of scar tissue, the formation of a capsule around a foreign body, healing of wounds by synthesis of the components of the intercellular substance: glycoproteins and proteoglycans of the main amorphous substances and proteins (elastin and collagen) that are able to form fibers.
Category: Medical dictionary
Aseptic is a set of measures that are aimed at preventing the penetration of microbes into the wound cavity and the development of infectious diseases due to such penetration. Thus, it is a prophylactic against microbes. Aseptics are often confused with antiseptics, but these concepts should be distinguished.
Vitamins are simple organic compounds of various nature. Taking part in a huge number of chemical reactions that occur in the body, they perform the signaling functions of hormones and certain prohormones, provide the Catholic function of many enzymes, can act as regulatory intermediaries, ensure the healthy functioning of the central nervous system, etc.
Antibodies are proteins that are present in tissue fluid, blood serum and on the cell membrane that recognize and bind antigens. They interact with the antigen, which was originally an activator of the B-cell, in this way the strict specificity of antibodies is manifested. They are synthesized by plasma cells in response to antigens - a certain structure of foreign substances.
Bacteremia is the presence of bacteria in the blood. Penetration of foreign microorganisms into the blood occurs through damaged mucous membranes, skin areas, as well as pathological changes in the vascular system, lymph nodes, the presence of infection, etc. The presence of bacteria in the blood is a serious complication of infectious diseases (meningitis, pneumonia), catheterization, various operations ( especially on the mucous membranes), foreign bodies entering the veins or arteries.
Laparocentesis is a surgical procedure to remove excess fluid from the abdominal cavity. The main danger during this procedure is the risk of fecal peritonitis (inflammation of the visceral and parietal peritoneal sheets, which can lead to a very serious condition) and intestinal perforation.
Intraocular (ocular) pressure is the process of formation and release of fluid within the eye. Pressure is created by moisture, which forms inside the ciliary body as a result of filtration of the liquid part of the blood. Penetrating through the pupil into the anterior chamber from the back, moisture washes the cornea and lens, and then flows into the vessels through the anterior chamber.
Laparoscopy is one of the methods of surgery, which is based on small incisions - from half to one and a half centimeters, while conventional surgery requires much longer incisions. The most common locations for this operation are the pelvic and abdominal cavities. Laparoscope is the main tool used in laparoscopy.
Lumbar puncture is the insertion of a needle at the lumbar level into the spinal cord, namely, its subarachnoid space. The objectives of this procedure can be: analysis of cerebrospinal fluid (cerebrospinal fluid), anesthetic and therapeutic effect. In neurology, lumbar puncture is the most common diagnostic method.
Metabolism is a combination of chemical reactions that occur in the body, which ensure its vital activity. These processes regulate reproduction, growth, response to external factors, the ability to preserve the integrity of the body. Metabolism is carried out between cells and intercellular fluid, the unchanged composition of which is ensured by blood circulation.
Coagulation (hemocoagulation, blood coagulation) is a complex step-by-step process, which is the formation of fibrin protein in the blood, leading to blood clots, as a result, the blood acquires a curdled consistency and loses fluidity. Thus, this process is a natural defense of the body from the loss of large volumes of blood as a result of wounds and other violations of the integrity of the skin, mucous membranes, etc.
Yunoscopy is a method of endoscopic examination of human organs associated with the study of the jejunum. Flexible endoscopes with special optics are the most common for this type of diagnosis. This procedure is carried out in case of suspicion of malabsorption of the jejunum, to exclude sources of bleeding, diagnose neoplasms of various nature, etc.
Glands are the organs of the body that produce any active substances, mainly hormones. The glands can be divided into 2 large groups: Exocrine - the glands that secrete the substance outward. The endocrine - secreting directly into the bloodstream. The thyroid gland is one of the most important endocrine glands of the body, which produces iodine-containing hormones and stores iodine.
Serotonin is a neurotransmitter hormone, a biogenic amine. The role of serotonin The functions of serotonin are diverse, under his leadership there are many processes in the human body. A decrease in serotonin level leads to an increase in pain sensitivity, that is, a slight irritation can respond with serious pain.
Menopause is a complete cessation of menstruation in women, which occurs as a result of inhibition of the ovaries. You can talk about the full onset of menopause when at least a year has passed since the last menstruation. Menopause has several periods, the first of which is characterized by an irregular cycle, up to postmenopause, which begins a year after its completion.
A hysterectomy is a surgical operation in which a woman's uterus is removed. This gynecological operation can be performed in the event of a diagnosis of a malignant tumor of the ovary, cervix or the uterus itself. Other diseases can also be an indication for the removal of this organ, for example, endometriosis, fibroids, prolapse of the uterus, compaction of its walls, etc.
Electroencephalography (EEG) is a non-invasive method for analyzing the functional state of the brain by recording its bioelectric activity. In addition, this term refers to the section of electrophysiology, which studies the patterns of electrical activity of the brain, as well as recording potentials that are removed from the surface of the scalp.
Prolactin is a peptide hormone that is produced by the anterior pituitary gland. This hormone belongs to the group of prolactin-like proteins, in which also somatotropin, placental lactogen and proliferin. The physiological role of this hormone has not yet been fully elucidated, however, all the known effects of prolactin are somehow related to reproduction.
The human bone marrow is one of the most important organs of the human blood-forming system, which carries out hematopoiesis, that is, hematopoiesis - the creation of new blood cells in return for dying and dying. In addition, the bone marrow is an organ of immunopoiesis, that is, it can produce cells of the immune system.
Triiodothyronine (T3) is a thyroid hormone of amino acid origin. From 20 to 30% of all thyroid hormones that are synthesized by the thyroid enter the blood in the form of just this substance. The rest comes in the form of thyroxine, which is essentially a prohormone. The conversion of thyroxine to T3 occurs through deiodination in peripheral tissues.
Then called an aqueous solution of organic substances and salts, which are secreted by the sweat glands of man. The main purpose of sweat is thermoregulation, and not only for humans, but also for many mammals. In addition, sweat is of great importance in socio-biological processes: it is one of the ways of transmitting information among mammals.