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The capillaries are so much smaller than the vena cavas and aorta because these large blood transportation systems are under a lot of pressure. For example, when blood is first emerging from the heart it is being pumped out with extreme amounts of pressure, if the aorta was as small as the capillaries, then it would burst under the pressure causing mass amounts of internal bleeding. On the flipside, the capillaries are farther away from the heart, here the pressure is not nearly as great as it is nearer to the heart, therefore the capillaries do not need to be big, they just need to be large enough to transport nutrients from the blood to the organs.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoThe Vena Cava is the vein the carries the blood from the body back to the heart. The Aorta is the artery that carries the blood out of the heart into the body. More blood fits in the entire body than in the heart alone. Thus, the Aorta can be smaller because there is less blood coming out of the heart and into the body, than there is blood coming from the body into the heart.
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Is abdominal aorta aintra peritoneal or retroperitoneal?
The abdominal aorta (and inferior vena cava for that matter) is a primary retroperitoneal structure.
What are the largest vessels in the venous system?
Superior vena cava and the inferior vena cava
Which vein is directly connected to the right atrium?
The superior vena cava and the inferior vena cava are directly connected to the right atrium.
Superior vana cava known as?
Anterior Vena Cava is another name for it.
What are the largest vien in your body?
vena cava
What is an artery the left ventricle aorta superior vena cava inferior vena cava?
superior vena cava
What is the opposite of aorta?
Vena cava. Whereas the aorta is the body's largest artery, the vena cava is the biggest vein.
What structures do the posterior vena cava and aorta serve?
The posterior vena cava and the aorta work together to move blood to and from the lower half of the body.
What is the size of the vena cava?
An inferior vena cava diameter > 12 mm
What is the body's largest vein?
The vena cavae, which returns blood from the bottom half of your body back to your heart.
What is attached to the heart?
The superior vena cava, inferior vena cava aorta and other major blood vessles
The main vain in your bady is the vena cava?
That is correct, the Vena Cava is the "mothership" of your body's vein system, and the main artery is the Aorta. The Vena Cava and the Aorta stem directly from the heart and branch into the various paths of blood vessels.
The large abdominal vein that runs alongside the aorta and enters the right atrium?
The inferior vena cava
Does vena cava or aorta have thicker walls?
The aorta has thicker walls as it is an artery not vein.
What are the main blood vessels leding to and from the heart?
Inferior Vena Cava, Superior Vena Cava, Pulmonary Artery and Vein, Aorta
Difference between aorta and vena cava?
aorta carries oxygenated blood away from the heart to the whole body while vena cava carries de-oxygenated blood from the body to the heart
What are the two main blood vessels with the haert and lungs?
Aorta Pulmonary Arteries Pulminary Veins Superior Vena Cava Inferior Vena Cava
