Circulatory system. 1. Circulatory system 2. Blood vascular system 3. Blood vessels: a) Arteries; b) Veins; c) Microcirculatory bed 4. Lymphatics 5. Heart.

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Presentation transcript:

Circulatory system

1. Circulatory system 2. Blood vascular system 3. Blood vessels: a) Arteries; b) Veins; c) Microcirculatory bed 4. Lymphatics 5. Heart

Scheme of vessel’s wall 1. Intima: a) endothelium; b) subendothelial layer 2. Media (sm. myocytes+ fibers) 3. Adventitia (loose con. tissue)

1. Intima: a) Endothelium; b) Subendothelial layer; c) Internal elastic lamina 2. Media (sm. myocytes+ fibers) 3. Adventitia (loose con. tissue+ vasa vasorum)

Classification of the artery 1.Elastic type (aorta) 2.Muscular elastic type 3.Muscular type

1. Intima: a) Endothelium; b) Subendothelial layer; c) Internal elastic lamina 2. Media (sm. myocytes+ fibers) 3. Adventitia (loose con. tissue+ vasa vasorum)

Elastic artery 1. Large endothelial cells 2. Subendothelial layer (myointimal cells) 3. Elastic fibers predominate

Muscular artery 1. Thin intima 2. Myocytes predominate 3. Internal elastic lamina well defined

Artery-vein 1. Thin wall 2. Bigger diameter (irregular shape) 3. Collagen fibers (laminas) 4. Adventitia thick 5. Walves

Microcirculatory bed

Capillary

Somatic capillary

Fenestrated capillary

Anastomoses AVA functions are the next: 1.Regulation (correction) of the blood pressure. 2.Blood supplying of organs. 3.Venous blood saturation with oxygen. 4.Blood withdrawing from the depot. 5.Regulation of the tissues fluid passage to the venous bed. Types: typical+ nontypical

Lymphatic vessels

Lymphatic vessel

Heart

HEART Tunices: 1. Endocardium (endothelium, subendothelial layer, fibro-muscular and external connective tissue layer) 2. Myocardium (contractile and conductive myocytes) 3. Epicardium 4. Pericardium

Types of cardiomyocytes: 1.Typical (contrictile) 2.Nontypical: a)Condictive b)Endocrine cardiomyocytes

Purkinje fibers

Atrial endocrine cardiomyocytes

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