histology of blood vessels
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1
Characteristic that all arteries and veins have
Tunica intima is covered by flat layer cells which is endothelium
2
What is this? and state its characteristics
elastic artery
characteristic:
- very thick tunica media which contains elastic fibers
- tunica intima is covered by endothelium which is flat cells
- small blood vessels of vasa vasorum are present in tunica adventitia layer
characteristic:
- very thick tunica media which contains elastic fibers
- tunica intima is covered by endothelium which is flat cells
- small blood vessels of vasa vasorum are present in tunica adventitia layer
3
What is this and state its characteristics
muscular artery
characteristic:
- consist internal elastic lamina at tunica intima
- tunica intima is covered by flat cells of endothelium
- thick runica media which contains elastic fibers
- has small blood vessels of vasa vasorum inside tunica adventitia
characteristic:
- consist internal elastic lamina at tunica intima
- tunica intima is covered by flat cells of endothelium
- thick runica media which contains elastic fibers
- has small blood vessels of vasa vasorum inside tunica adventitia
4
What structure is this and state the characteristics
vein
characteristics
- thin tunica media
- thick tunica adventitia which contains many smooth muscle fibers
- tunica intima is covered by layer of flat cells of endothelium
characteristics
- thin tunica media
- thick tunica adventitia which contains many smooth muscle fibers
- tunica intima is covered by layer of flat cells of endothelium
5
Image occlusion: name the hidden labels
6
Image occlusion: name the hidden labels
7
Image occlusion: name the hidden labels
8
Image occlusion: name the hidden labels
9
Image occlusion: name the hidden labels
10
Image occlusion: name the hidden labels
11
Image occlusion: name the hidden labels
12
continuation of conduction system of AV node
• AV bundle is located in the membranous IVS
• It is the only electrical bridge between atria and ventricles
• Splits into right and left bundle branches
• Bundle branches continue as Purkinje fibres
• Purkinje fibres cause rapid, coordinated ventricular contraction
• Purkinje fibres are NOT nerves
• It is the only electrical bridge between atria and ventricles
• Splits into right and left bundle branches
• Bundle branches continue as Purkinje fibres
• Purkinje fibres cause rapid, coordinated ventricular contraction
• Purkinje fibres are NOT nerves
13
purkinje fibres
• Modified cardiac muscle cells
• Located in subendocardium
• Large, pale cells
• 1–2 centrally placed nuclei
• Sparse peripheral myofibrils
• Cytoplasm rich in glycogen & mitochondria
• Conduct impulses to ventricular myocardium
• Located in subendocardium
• Large, pale cells
• 1–2 centrally placed nuclei
• Sparse peripheral myofibrils
• Cytoplasm rich in glycogen & mitochondria
• Conduct impulses to ventricular myocardium