Pesquisando por: "Vein valve, illustration" - Fotoarena - Agência de fotojornalismo

alb9568103 Anatomy of heart interior, frontal section.

alb9568073 Cross section of human heart with labels.

alb5568144 Human heart cross-section with vessels, bronchial tree and cut rib cage. On white background.

alb3896811 Cross section of human heart.

alb3894334 Anatomy of human heart, cross section with detailed internal structure.

alb3877943 Internal view of the human heart.

alb3885540 Cross section of human heart with labels.

alb3883373 Interior of human heart showing atria and ventricles.

alb3285107 Heart anatomy.

alb5570831 Human heart cross-section with detailed internal structure, on white background.

alb5570809 Human heart cross-section with detailed internal structure, on white background.

alb5570703 Human heart cross-section view and non-cut view, with vessels. Close-up on white background.

alb5565750 Human heart cross-section with vessels, bronchial tree and cut rib cage. On white background.

alb5569673 Human heart cross-section with vessels. Close-up on white background.

alb5565982 Human heart cross-section with vessels, lungs, bronchial tree and cut rib cage. On white background.

alb3894753 Thrombus forming on valve within vein.

alb3876510 Anatomy of human veins and arteries, black background.

alb3363046 Heart schema.

alb3890346 Lateral cut view of human heart on black background.

alb3890710 Human heart with labels.

alb3885585 Cross section of human heart.

alb3885685 Interior of human heart.

alb3887358 Internal view of the human heart.

alb3887956 Anatomy of human heart, cross section.

alb3877211 Heart valves showing pulmonary valve, mitral valve and tricuspid.

alb3883602 Human heart, lateral cut.

alb3880553 Interior view of heart with detail of muscle cells and atherosclerotic artery. Chest x-ray in background.

alb3882986 Anatomy of heart interior, frontal section.

alb3884272 Comparison of normal heart versus heart with a patent foramen ovale.

1016_04_53267 The blood is held back by the valves. The valves are membranous folds located inside the veins. They form impermeable barriers that prevent the blood from flowing back downwards under the pull of gravity.

1016_04_48231 The blood is held back by the valves. The valves are membranous folds located inside the veins. They form impermeable barriers that prevent the blood from flowing back downwards under the pull of gravity.

926_09_circsy045a4 Diagram illustrating varicose veins

926_09_circsy041a4 Diagram showing the exterior and a cross-section of the human heart

926_09_circsy025a4 Human arterial supply and venous drainage of the organs.

HISL015_EC284 Circulation of the blood from William Harvey's ON THE MOTIONS OF THE HEART AND BLOOD, 1628. Illustrations of a tourniqueted human forearms with pronounced superficial blood veins to indicate circulation. Fig. 3: Blood flow is blocked at two points, O and H. At O, the blood pools in a valve and does not flow toward the hand, but flows toward the heart. Fig. 4: Blood flow is blocked at two points, M and N, with no valve within section.

HISL015_EC283 Circulation of the blood from William Harvey's ON THE MOTIONS OF THE HEART AND BLOOD, 1628. Illustrations of a tourniqueted human forearms with pronounced superficial blood veins to indicate circulation. Fig.1: Vessel bulges indicating the blood pooling in the of valves in the veins. Fig.2: Finger pressure on vessel indicates one way flow of blood.

0015053 HARVEY: CIRCULATION, 1628. The function of the valves in the veins by William Harvey (1578-1657). Line engraving from Harvey's 'De Motu Cordis,' 1628.