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Histology cardiovascular system - Coggle Diagram
Histology cardiovascular system
Blood vessels
Layer of blood vessels
Tunica intima
(Innermost layer)
Endothelial lining
Subendothelial layer
internal elastic lamina (Elastic CNT)
Tunica media
(Middle layer)
Smooth muscle cells
Elastic reticular
Callagenous fibers
External elastic lamina
Tunica adventitia
(Outermost layer)
**Collagen fibers
Elastic fibers
Arterial System
Large /Elastic artery
Blood vessels
Aorta & its branches
Brachiocephalic trunk
Common carotid artery
Subclavian artery
Pulmonary artery
Common iliac artery
Layers
Tunica intima
Endothelium
Subendothelial layer
**Internal elastic lamina(Elastic fibers)
Smooth muscle fibers
Tunica media
Elastic tubular sheath
Circular smooth muscle
External elastic lamina
Tunica adventitia
Thinner than tunica media
Bundle of longitudinal collagen fibers
Vasa vasorum
Small & Medium Sized Artery
Layers
Tunica intima
Endothelium
**Internal elastic lamina
Tunica media
Circular smooth muscle
**External elastic lamina
Tunica advetitia
Collagen fibers
Elastic fibers
Arteriole
connect with small artery & capillary
Layers
Tunica intima
Endothelial lining
Internal elastic lamina
Tunica media
Circularly arranged of smooth muscle
Tunica adventitia
Thin layer of connective tissue
Capillary
Lining with endothelial: 2-3 cells
Pericapillary cells : Pericytes
Undifferentiated cell
Endothelial cell
Fibroblast
Smooth muscle cell
Type
Continuous capillary
(Type I)
Continuous
cytoplasm membrae
Basement membrane
Tight junction of endothelial cells
Blood brain barrier
Blood thymus barrier
Fenestrated capillary
(Type II)
Fenestrated cytoplasm (pores)
membrane “diaphragm”
Continuous basement membrane
Sinusoidal capillary
(Type III)
Various sized & wide lumen
Fenestrated cytoplasm
Wide pore
discontinuous
Kupffer’s cells
(Macrophage)
Venous system
Low pressure
Against gravity
Passive movement
Valve
Contraction of skeletal muscle
Venule
Large & irregular lumen
Thin wall
Endothelial cells (pore)
High permeability
Small & medium vein
Layers
Tunica intima
Endothelial lining
Internal elastic lamina (thin)
Tunica media
Circular smooth muscle
thick
Lower limb
thin
Head
Neck
Abdominal
External elastic lamina : thin
Tunica adventitia
Thick layer
Bundles of
Collagen fibers
Elastic fibers
Large vein
Layers
Tunica intima
Endothelial lining
Internal elastic lamina : thin
Tunica media
Elastic fibers
Collagen fibers
Smooth muscle
External elastic lamina : thin
Tunica adventitia
Thick layer
Smooth muscles : longitudinal
Heart
Heart wall
Endocardium
(Tunica intima)
Endothelium
dense CNT
Subendothelium
Subendocardium
impulse conducting system
Purkinje fibers
Vesicular nucleus
Glycogen
gap junction
A-V bundle (ventricle)
Myocardium
(Tunica media)
Cardiac muscles
Elastic fibers
Atrium: Pectinate muscle
Intercalated disc
gap junction & desmosome
Epicardium
(Tunica adventitia)
Mesothelium
Fibroelastic CNT
Subepicardial layer
Loose CNT
Fat cell
coronary artery, cardiac vein
SA node
Cardiac Valve
AV valve
Tricuspid valve
Bicuspid valve
Semilunar valve
Aortic valve
Pulmonary valve
