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3 de nov. de 2023 · Major arteries. By definition, an artery is a vessel that conducts blood from the heart to the periphery. All arteries carry oxygenated blood–except for the pulmonary artery. The largest artery in the body is the aorta and it is divided into four parts: ascending aorta, aortic arch, thoracic aorta, and abdominal aorta.
- Ulnar Veins
Ulnar vein (Vena ulnaris) The ulnar veins are deep paired...
- Radial
The radial nerve is the largest terminal branch of the...
- Veins of the Lower Limb
The great saphenous vein has many connections with the small...
- Veins of the Upper Limb
The venous system of the upper limb functions to drain...
- Autonomic Nervous System
Key facts about the descending pathways of the autonomic...
- Anterior Jugular Vein
Anterior jugular vein (Vena jugularis anterior) The anterior...
- Ulnar Veins
Arteries, Veins, and Capillaries. The blood from the heart is carried through the body by a complex network of blood vessels. Arteries take blood away from the heart. The main artery is the aorta that branches into other major arteries, which take blood to different limbs and organs.
Arteries, Veins, and Capillaries. The blood from the heart is carried through the body by a complex network of blood vessels (Figure 40.3.6 40.3. 6 ). Arteries take blood away from the heart. The main artery is the aorta that branches into major arteries that take blood to different limbs and organs.
Because veins have to work against gravity to get blood back to the heart, contraction of skeletal muscle assists with the flow of blood back to the heart. Figure 21.16. Arteries and veins consist of three layers: an outer tunica externa, a middle tunica media, and an inner tunica intima.
Arteries and veins transport blood in two distinct circuits: the systemic circuit and the pulmonary circuit ( Figure 20.2 ). Systemic arteries provide blood rich in oxygen to the body’s tissues. The blood returned to the heart through systemic veins has less oxygen, since much of the oxygen carried by the arteries has been delivered to the cells.
The cardiovascular system comprises the heart, veins, arteries, and capillary beds. The atrioventricular (mitral and tricuspid) and semilunar (aortic and pulmonic) valves keep blood flowing in one direction through the heart, and valves in large veins keep blood flowing back toward the heart.
These major arteries include the carotid artery that takes blood to the brain, the brachial arteries that take blood to the arms, and the thoracic artery that takes blood to the thorax and then into the hepatic, renal, and gastric arteries for the liver, kidney, and stomach, respectively.
