🎓 Prepared by students from Boğaziçi University

What Are the Major Arteries of the Body?

Arteries are the vessels that carry blood away from the heart, and (with one exception) that blood is oxygen-rich. The major arteries form a branching tree from the aorta down to every organ and limb.

Short answer

The major arteries are the aorta and its main branches — including the coronary, carotid, subclavian, celiac, mesenteric, renal, and iliac arteries — which carry oxygenated blood from the heart to the body's organs and tissues.

Systemic Arterial Pathway

1
Left ventricle
Oxygenated blood is pumped out of the heart
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2
Aorta
The body's largest artery; arches up then descends through the chest and abdomen
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3
Branch arteries
Carotid, subclavian, celiac, mesenteric and renal arteries branch off the aorta
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4
Common iliac arteries
The aorta splits at about L4 into left and right common iliac arteries
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5
Peripheral arteries
Smaller arteries (femoral, radial, etc.) deliver blood to limbs and tissues

Step-by-step worked examples

A doctor checks a patient's pulse at the wrist. Which artery is being palpated, and what path does that blood take from the heart?

The wrist pulse (thumb side) is the radial artery
Trace backward: radial artery ← brachial artery ← axillary artery ← subclavian artery ← aortic arch
So the pulse reflects blood flow from the heart through the aorta, subclavian, axillary and brachial arteries to the radial artery

An abdominal aortic aneurysm forms just above where the aorta divides. Which two major arteries downstream could lose blood supply?

The abdominal aorta bifurcates into the left and right common iliac arteries at roughly vertebral level L4
An aneurysm just proximal to this split sits upstream of both branches
So compromised flow could affect both the left and right common iliac arteries, reducing supply to the pelvis and legs

A stroke patient shows reduced blood flow to the back (posterior) part of the brain. Which arterial pathway is most likely involved?

The posterior brain circulation is supplied by the vertebral arteries, which join to form the basilar artery
The vertebral arteries branch off the subclavian arteries
So the likely pathway is subclavian artery → vertebral artery → basilar artery

Flashcards

Quick quiz

Q1.Which artery is the largest in the human body?

Correct answer: A. The aorta is the body's largest artery, carrying blood from the left ventricle to the systemic circulation.

Q2.Which major artery is the exception that carries deoxygenated blood?

Correct answer: B. The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for gas exchange.

Q3.Which arteries mainly supply blood to the head and neck?

Correct answer: B. The common carotid arteries branch into internal and external carotid arteries supplying the brain, face and neck.

Q4.At about what vertebral level does the abdominal aorta split into the common iliac arteries?

Correct answer: C. The aortic bifurcation typically occurs around the fourth lumbar vertebra (L4).

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Common mistakes

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Thinking all arteries carry oxygenated blood. — Correct: The pulmonary artery is the exception — it carries deoxygenated blood from the heart to the lungs.

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Confusing 'carotid' and 'coronary' because the names sound alike. — Correct: Carotid arteries supply the neck and head; coronary arteries supply the heart muscle itself.

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Assuming arteries and veins always run in identical, mirror-image paths. — Correct: Many major arteries and veins do run alongside each other, but their branching and naming patterns differ, especially in venous drainage.

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Believing a pulse can only be checked at the wrist. — Correct: Pulse can be palpated at several arterial sites: carotid (neck), brachial (elbow), radial (wrist), femoral (groin), and dorsalis pedis (foot).

FAQ

What are the major arteries in the human body?

The major arteries include the aorta and its main branches: coronary, carotid, subclavian, vertebral, celiac, mesenteric, renal, iliac and femoral arteries.

What is the largest artery in the body?

The aorta is the largest artery. It starts at the left ventricle and branches to supply nearly every organ and tissue.

What are examples of major arteries and what do they supply?

Examples: coronary arteries (heart), carotid arteries (brain/head), renal arteries (kidneys), femoral artery (leg), and celiac trunk (stomach, liver, spleen).

How are the major arteries organized in the body?

They form a branching tree starting at the aorta, dividing into progressively smaller arteries that reach every organ and limb.