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Functional Anatomy of Blood Vessels. Special Circulations Pulmonary Circulation Right ventricle ↓ Pulmonary trunk ↓ Right and left pulmonary arteries.

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Presentation on theme: "Functional Anatomy of Blood Vessels. Special Circulations Pulmonary Circulation Right ventricle ↓ Pulmonary trunk ↓ Right and left pulmonary arteries."— Presentation transcript:

1 Functional Anatomy of Blood Vessels

2 Special Circulations Pulmonary Circulation Right ventricle ↓ Pulmonary trunk ↓ Right and left pulmonary arteries ↓ Lobar arteries (2 left, 3 right) ↓ Arterioles ↓ Pulmonary capillaries ↓ Diffusion ↓ Venules ↓ Veins ↓ Pulmonary veins ↓ Left atrium Functional blood supply for the lungs comes from the aorta and through the bronchial arteries.

3 Special Circulations Fetal Circulation Umbilical cord is made of the umbilical vein and two umbilical arteries. Vein carries nutrients and O 2 to fetus. Arteries carry CO 2 and wastes from fetus to placenta. Placenta ↓ Umbilical vein ↓ Ductus venosus ↓ Inferior vena cava ↓ Right atrium ↓ Foramen ovale ↓ Left atrium ↓ Left ventricle ↓ Aorta ↓ Body ↓ Internal iliac arteries ↓ Umbilical arteries ↓ Placenta Lower extremities Right ventricle ↓ Pulmonary trunk ↓ Ductus arteriosus Liver

4 Brachiocephalic artery Special Circulation Arterial Supply of the Brain Aortic Arch Internal carotid arteries Vertebral arteries Middle cerebral artery Anterior cerebral artery Basilar artery Posterior cerebral arteries Common carotid arteries Subclavian artery Brachiocephalic artery Posterior communicating artery Anterior communicating artery

5 Special Circulation Arterial Supply of the Brain Internal carotid Middle cerebral Anterior cerebral Anterior communicating Middle cerebral Basilar Vertebral Posterior communicating Posterior cerebral

6 Major Systemic Veins Superior Vena Cava Inferior Vena Cava

7 Major Systemic Veins Dorsalis pedis vein ↓ Anterior tibial vein ↓ Popliteal vein ↓ Femoral vein ↓ External iliac vein ↓ Common iliac vein ↓ Inferior vena cava Dorsal venous arch Small saphenous vein Plantar Arch ↓ plantar veins ↓ Posterior tibial vein Lower Limb Great saphenous vein Fibular (peroneal) vein

8 BLOOD VESSELS

9 ArteriolesVeinules BLOOD VESSELS

10 COMPARISON OF ARTERIES, CAPILLARIES, & VEINS Arteries & ArteriolesCapillariesVeinules & Veins Tunica Intima (Blood) Tunica Media Tunica Adventitia

11 CAPILLARY BEDS

12 BLOOD PRESSURE

13 VENOUS PUMP

14 1. Valves - formed from folds of tunica intima prevent backflow of blood in veinules & veins. 2. Function like semilunar valves forcing blood to flow against gravity toward the heart.

15 VENOUS PUMP 3. Skeletal muscles pressing against walls of veins provide force to move blood from one valve through the next toward the heart. 4. Skeletal muscles pressing against walls of veins provide force to move blood from one valve through the next toward the heart.

16 VARICOSE VEINS 1. Veins that are stretched, dilated & overfilled with blood due to incompetent valves 2. Contributing causes: Weak valves or veins - (heredity) Excessive weight Excessive standing, straining Inadequate exercise Increased intra-pelvic pressure - pregnancy, constipation

17 VARICOSE VEINS

18 MAJOR ARTERIES OF THE BODY

19 Ascending Aorta Aortic Arch Thoracic Aorta Abdominal Aorta Brachiocephalic

20 Celiac

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22 External Iliac Internal Iliac Femoral Popliteal (behind knee) Posterior Tibial (behind Tibia) Anterior Tibial ARTERIES OF THE LEG

23 ARTERIES OF THE HEAD & NECK

24 Major Systemic Veins Dorsal venous arch Great saphenous Small saphenous Dorsalis pedis Anterior tibial Popliteal Femoral External iliac Common iliac Inferior vena cava Lower Limb Dorsal venous arch Small saphenous Popliteal Femoral External iliac Common iliac Inferior vena cava Dorsal venous arch Great saphenous Femoral External iliac Common iliac Inferior vena cava Plantar arch Plantar veins Posterior tibial Fibular Anterior tibial Popliteal Femoral External iliac Common iliac Inferior vena cava

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26 Major Systemic Veins INFERIORVENACAVAINFERIORVENACAVA Hepatic veins Left suprarenal vein Renal vein Right suprarenal vein Hepatic veins Left gonadal vein Right gonadal vein Lumbar veins Abdomen

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28 Major Systemic Veins Head and Neck Occipital vein ↓ Posterior arcuate vein ↓ External jugular vein ↓ Vertebral ↓ FacialSuperficial temporal vein Subclavian vein Brachiocephalic vein ↓ Superior vena cava Internal jugular vein

29 Major Systemic Veins Occipital vein Posterior arcuate vein External jugular vein Subclavian vein Brachiocephalic vein Superior vena cava Head and Neck Vertebral vein Subclavian vein Brachiocephalic vein Superior vena cava Facial vein Superficial temporal vein Internal jugular vein Brachiocephalic vein Superior vena cava

30 Major Systemic Veins Upper Limb Ulnar vein Radial vein Basilic vein Brachial vein Cephalic Axillary ↓ Subclavian ↓ Brachiocephalic ↓ Superior vena cava Median cubital vein Median antibrachial vein

31 Major Systemic Veins Ulnar vein Radial vein Brachial vein Axillary vein Subclavian vein Brachiocephalic vein Superior vena cava Upper Limb Basilic vein Brachial vein Axillary vein Subclavian vein Brachiocephalic vein Superior vena cava Cephalic vein Axillary vein Subclavian vein Brachiocephalic vein Superior vena cava

32 Major Systemic Veins Thorax Azygos System Posterior intercostal veins ↓ Ascending lumbar vein Hemiazygos vein Accessory hemiazygos veins Azygos vein Superior vena cava

33 Major Systemic Veins Posterior intercostal veins Ascending lumbar veins Hemiazygos vein Azygos vein Superior vena cava Thorax Azygos System Posterior intercostal veins Ascending lumbar vein Accessory hemiazygos veins Azygos vein Superior vena cava

34 Major Systemic Veins Hepatic Portal System Veins from digestive viscera, spleen, & pancreas ↓ Hepatic Portal vein ↓ Liver ↓ Hepatic veins ↓ Inferior vena cava Veins from distal large intestine ↓ Inferior mesenteric vein Veins from spleen ↓ Splenic vein Veins from lesser curvature of stomach ↓ Left gastric vein Veins from small intestine, ascending and transverse colon ↓ Superior mesenteric vein

35 Major Systemic Veins Veins from distal large intestine Inferior mesenteric vein Veins from digestive viscera, spleen and pancreas Hepatic portal vein Liver Hepatic veins Inferior vena cava Hepatic Portal System Veins from spleen Splenic vein Veins from digestive viscera, spleen and pancreas Hepatic portal vein Liver Hepatic veins Inferior vena cava Veins from small intestine, ascending and transverse colon Superior mesenteric vein Veins from digestive viscera, spleen and pancreas Hepatic portal vein Liver Hepatic veins Inferior vena cava Veins from lesser curvature of stomach Left gastric vein Liver Hepatic veins Inferior vena cava

36 Major Systemic Veins Hepatic Portal System


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