13.1 POJA-L4658+4659 Inferior cava vein (human)
13.1 POJA-L4658+4659
Title: Inferior cava vein (human)
Description:
(A-B): Survey and detail of inferior cava vein, resorcin-fuchsin and light green. Along the whole vein the wall appears irregular thick and the media contains several layers of circular arranged SMCs (smooth muscle cells) with collagen and elastic fibres. The adventitia is strongly developed in this particular section. By contraction these muscles are the propelling-force of the blood flow in the direction of the heart. Vertical bar indicates small intima and media with circular SMC (arrows), adventitia with longitudinal arranged bundles of SMCs (oval).
Background: Adventitial bundles of SMCs are present in the adventitia of many large veins located below the heart level e.g. inferior cava, common iliac, renal, azygos, portae and mesentericae veins. By muscular contraction these veins actively push along the blood column against the haemostatic pressure. Generally thick bundles of SMCs are not only present in the adventitia but also found in other layers of the venous wall e.g. uterine vein with intimal longitudinal myocytes, splenic vein with circular oriented myocytes. One exception are the pulmonary veins that contain partly cardiomyocytes and less SMCs.
Keywords/Mesh: cardiovascular system, vascularisation, vein, inferior cava vein, smooth muscle cell, hydrostatic pressure, histology, POJA collection
Title: Inferior cava vein (human)
Description:
(A-B): Survey and detail of inferior cava vein, resorcin-fuchsin and light green. Along the whole vein the wall appears irregular thick and the media contains several layers of circular arranged SMCs (smooth muscle cells) with collagen and elastic fibres. The adventitia is strongly developed in this particular section. By contraction these muscles are the propelling-force of the blood flow in the direction of the heart. Vertical bar indicates small intima and media with circular SMC (arrows), adventitia with longitudinal arranged bundles of SMCs (oval).
Background: Adventitial bundles of SMCs are present in the adventitia of many large veins located below the heart level e.g. inferior cava, common iliac, renal, azygos, portae and mesentericae veins. By muscular contraction these veins actively push along the blood column against the haemostatic pressure. Generally thick bundles of SMCs are not only present in the adventitia but also found in other layers of the venous wall e.g. uterine vein with intimal longitudinal myocytes, splenic vein with circular oriented myocytes. One exception are the pulmonary veins that contain partly cardiomyocytes and less SMCs.
Keywords/Mesh: cardiovascular system, vascularisation, vein, inferior cava vein, smooth muscle cell, hydrostatic pressure, histology, POJA collection