Adipocytes are located in groups near blood vessels. Their accumulation forms adipose tissue.

They participate in trophic function, water metabolism and energy production due to the accumulation of reserve fat.

The expenditure of fat occurs under the influence of hormones (insulin, adrenaline) and lipase.

New adipose cells develop from adventitional cells with enhanced nutrition.

Adipose cells (white and brown)(picture)
see the description of these cells in the description of adipose tissue

Lipid drop, 2-nucleus, 3-organels, 4 cell membraine

Adventitial cells are poorly specialized cells that accompany blood vessels.

In the process of differentiation, they can turn into fibroblasts, myofibroblasts and adipocytes.

Pericytes - surround the blood capillaries and are part of their wall.

Pigment cells (melanocytes) - develop from the neural crest, contain granules (melanosomes) in the cytoplasm with the pigment melanin.

GROUND SUBSTANCE

It has a gel-like structure, surrounds the cellular and fibrous structures of CT.

It consists of plasma proteins, water, inorganic ions, soluble collagen and elastin precursors, proteoglycans, glycoproteins, glycosaminoglycans (GAG)

GAG: -Sulfated (dermatan sulfate, keratan sulfate, heparan sulfate)

Non-sulfated (hyaluronic acid) - binds water and holds it in the tissue!

The main substance is formed by secretion carried out by CT cells and from blood plasma entering the intercellular spaces.

Excessive accumulation of water in the OAS leads to the formation of edema.

Provides the distribution of drugs with the introduction of subcutaneous and intra / muscular

COLLAGEN FIBERS

Properties - tensile strength and low elongation.

They swell in water and form a sticky substance during heat treatment.

They contain collagen protein, which is synthesized on EPS of fibroblasts.

There are 14 types of collagen.

KV has 4 levels of organization:

- molecular

- supramolecular

- fibrillar,

- fiber.

ELASTIC FIBERS

Properties - extensibility, determine the elasticity of tissues.

They are thin, anastomose with each other. The composition distinguishes microfibrillar and amorphous (in the center) component.

They have 4 levels of organization.

Microslide(loose irregular connective tissue)

TENDON

It consists of bundles of collagen fibers, between which fibroblasts, fibrocytes are located.

Each fiber bundle, separated from the neighboring fibrocytes, is called a first-order bundle.

Several first-order bundles surrounded by a layer of LICT (endotenonium) form a second-order bundle

Beams of the third order are formed by connecting several beams of the second order. They are separated by layers of LIST (peritonium).