Blood vessels Muhammed Asif Lecturer YMC Arteries 28
Blood vessels Muhammed Asif Lecturer, YMC
Arteries 28 -Oct-17 Blood vessels - Histology 2
Layers of the blood vessels Tunica intima Tunica media Tunica adventitia 28 -Oct-17 Blood vessels - Histology 3
28 -Oct-17 Blood vessels - Histology 4
Tunica intima Layers of the blood vessels 1. Endothelium 2. Basal lamina 3. Sub - endothelial Connective tissue 4. Internal elastic lamina Tunica media 1. Elastic fibers or 2. Smooth muscle 3. External elastic lamina Tunica adventitia 1. Connective tissue 2. Vasa vasorum 3. Vasa nervi 28 -Oct-17 Blood vessels - Histology 5
Classification of blood vessels – Arteries – Arterioles – Capillaries – Sinusoides – Venules 28 -Oct-17 – veins Blood vessels - Histology 6
Blood vessels – Large sized artery/Elastic artery – Medium sized artery/Muscular artery – Large sized vein 28 -Oct-17 Blood vessels - Histology 7
ELASTIC ARTERY or LARGE SIZED ARTERY 28 -Oct-17 Blood vessels - Histology 8
Brachiocephalic trunk Left common carotid artery Left subclavian artery Aortic arch Ascending aorta Thoracic (descending) aorta Abdominal aorta Common iliac arteries 28 -Oct-17 Blood vessels - Histology 9
28 -Oct-17 Blood vessels - Histology 10
28 -Oct-17 Blood vessels - Histology 11
Muscular artery and Medium sized artery 28 -Oct-17 Blood vessels - Histology 12
Muscular arteries Brachial artery Radial artery Ulnar artery 28 -Oct-17 Blood vessels - Histology 13
28 -Oct-17 Blood vessels - Histology 14
28 -Oct-17 Blood vessels - Histology 15
Muscular artery 28 -Oct-17 Blood vessels - Histology 16
Elastic artery 28 -Oct-17 Blood vessels - Histology 17
Elastic artery Muscular artery Diameter of lumen > 1 cm Thickness of wall is more Tunica media – predominantly made up of elastic fibers made up of smooth muscle fibers Internal elastic lamina is ill defined Internal elastic lamina is clearly visible Tunica adventitia - thin Tunica adventitia - thick 28 -Oct-17 Blood vessels - Histology 18
Arteriosclerosis: 28 -Oct-17 Blood vessels - Histology 19
Aneurys m 28 -Oct-17 Blood vessels - Histology 20
Strok e 28 -Oct-17 Blood vessels - Histology 21
28 -Oct-17 Blood vessels - Histology 22
28 -Oct-17 Blood vessels - Histology 23
Vein 28 -Oct-17 Blood vessels - Histology 24
Large vein SVC IVC 28 -Oct-17 Blood vessels - Histology 25
Medium sized vein 28 -Oct-17 Blood vessels - Histology 26
LARGE VEIN
28 -Oct-17 Blood vessels - Histology 28
28 -Oct-17 Blood vessels - Histology 29
28 -Oct-17 Blood vessels - Histology 30
Varicose Veins 28 -Oct-17 Blood vessels - Histology 31
Notes 28 -Oct-17 Blood vessels - Histology 32
Elastic artery • TUNICA INTIMA consists of the – endothelial lining – basal lamina and – a small amount of sub endothelial connective tissue. Blood vessels - Histology – Inner elastic lamina which merges with media. 33 28 -Oct-17
• TUNICA MEDIA – Is thick and most prominent. – Contains mainly elastic fibres. – Few smooth muscle cells. 28 -Oct-17 Blood vessels - Histology 34
• TUNICA ADVENTITIA – Made of connective tissue with collagen fibres. – Vasa - vasora seen. 28 -Oct-17 Blood vessels - Histology 35
Muscular artery • TUNICA INTIMA consists of the – endothelial lining – basal lamina and – a small amount of sub endothelial connective tissue. Blood lamina vessels - Histology – Wavy inner elastic which is very 28 -Oct-17 36
• TUNICA MEDIA – Is thick with mainly smooth muscle cells. – Hence the name muscular artery. 28 -Oct-17 Blood vessels - Histology 37
• TUNICA ADVENTITIA: – Made of connective tissue with collagen fibres. 28 -Oct-17 Blood vessels - Histology 38
Large Vein • TUNICA INTIMA consists of the – endothelial lining – basal lamina and – a small amount of sub endothelial connective tissue. 28 -Oct-17 Blood vessels - Histology 39
• TUNICA MEDIA – is thin. – Contains smooth muscle cells – Collagen fibres. – It is thinner than adventitia. 28 -Oct-17 Blood vessels - Histology 40
• Large tunica adventitia. – The adventitia is the thickest layer in large veins. – made of prominent bundles of longitudinally arranged smooth muscle – some collagen fibres 28 -Oct-17 – some elastic fibres. Blood vessels - Histology 41
28 -Oct-17 Blood vessels - Histology 43
28 -Oct-17 Blood vessels - Histology 44
28 -Oct-17 Blood vessels - Histology 45
28 -Oct-17 Blood vessels - Histology 46
- Slides: 46