4 Major Vessels and Preferred Venipuncture Veins Free Online FlashCards

How do arteries and veins differ?

Arteries carry blood away from the heart, while veins carry blood toward it.

What is unusual about pulmonary vessel oxygen content?

Pulmonary arteries carry oxygen-poor blood to the lungs, and pulmonary veins return oxygen-rich blood to the heart.

What is the vessel sequence from arterioles to veins?

Arterioles feed capillaries, where exchange occurs with tissues; capillaries drain into venules, which join to form veins.

What is the lumen of a blood vessel?

Most vessels have three wall layers, called tunics, surrounding a central passage called the lumen.

What route carries blood between the heart and lungs?

The right ventricle sends blood through the pulmonary trunk and pulmonary arteries to the lungs. Pulmonary veins return it to the left atrium.

Which major arteries arise from the aortic arch?

The aortic arch gives rise to the brachiocephalic trunk, left common carotid, and left subclavian arteries. The brachiocephalic trunk divides into the right common carotid and right subclavian.

How does the subclavian artery continue through the upper limb?

The subclavian artery continues as the axillary artery in the armpit, then as the brachial artery in the arm.

Where are the radial and ulnar arteries located?

The radial artery is on the thumb side of the forearm; the ulnar artery is on the little-finger side.

What regions do the SVC and IVC drain?

The superior vena cava drains most of the body above the diaphragm; the inferior vena cava drains most regions below it. Both empty into the right atrium.

What is the route of blood through the hepatic portal system?

The hepatic portal vein carries blood from digestive organs to the liver for processing. Blood then leaves the liver through hepatic veins and enters the IVC.

How does the external iliac artery continue through the lower limb?

The external iliac artery becomes the femoral artery in the thigh, then the popliteal artery behind the knee and tibial arteries in the lower leg.

Which vein is usually preferred for routine venipuncture?

The median cubital vein commonly crosses the center of the elbow crease, connecting the cephalic and basilic veins. It is usually the first choice when suitable.