What is the systemic venous system?
The systemic venous system brings deoxygenated blood from tissues and organs back to the right atrium of the heart, whereas the pulmonary venous system brings oxygenated blood from the pulmonary circulation back to the left atrium of the heart.
Which venous system include the venous system of the lower extremities?
The venous system of the lower extremities includes the deep veins, which lie beneath the muscular fascia and drain the lower extremity muscles; the superficial veins, which are above the deep fascia and drain the cutaneous microcirculation; and the perforating veins that penetrate the muscular fascia and connect the …
What are the two venous systems?
Portal venous systems are considered venous because the blood vessels that join the two capillary beds are either veins or venules. Examples of such systems include the hepatic portal system, the hypophyseal portal system, and (in non-mammals) the renal portal system.
Where is venous system?
The venous system of the legs is divided into deep and superficial vessels (Fig. 18-1). The superficial venous system runs parallel to the deep venous system. The deep veins lie within the muscular system and the fascia, transporting the majority of the deoxygenated blood returned from the legs to the heart.
What is more important systemic circulation or pulmonary circulation?
Systemic circulation as a whole is a higher pressure system than pulmonary circulation simply because systemic circulation must force greater volumes of blood farther through the body compared to pulmonary circulation.
Where are the veins in the lower leg?
The superficial veins are located within the subcutaneous tissue whilst the deep veins are found deep to the deep fascia. The deep veins accompany the major arteries and their branches and are usually paired….Long saphenous vein.
|Source||Medial marginal vein of the foot|
|Drains to||Femoral vein|
What is the most important vein in your body?
The main vein in your body is the vena cava. The superior vena cava is in the upper right part of your chest. It carries blood from your head, neck, arms and chest back to your heart. The inferior vena cava is near the right side of your diaphragm.
What organs receive blood from the systemic circuit?
Systemic Circuit Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.
Is pulmonary circulation high or low pressure?
The pulmonary circulation receives the entirety of the cardiac output from the right heart and is a low pressure, low resistance system due to its parallel capillary circulation.
Why is pulmonary pressure lower than systemic?
The pulmonary circulation is a relatively low pressure system compared to the systemic circulation because the pulmonary arteries are not as muscularized as their systemic counterparts. Thinner, less muscular vessels are more easily distended.