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Related Concept Videos

Arteries of the Head and Neck01:26

Arteries of the Head and Neck

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The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
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The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
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Veins of Head and Neck01:19

Veins of Head and Neck

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The blood drainage from the head and neck is primarily managed by three pairs of veins: the external jugular, internal jugular, and vertebral veins. The external jugular veins drain superficial scalp and face structures, passing over the sternocleidomastoid muscles to empty into the subclavian veins.
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Arteries of the Upper Limbs01:12

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The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
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Vascular Spasm01:16

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Arteries of Lower Limbs01:20

Arteries of Lower Limbs

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The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
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Related Experiment Video

Updated: Nov 5, 2025

A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis
09:36

A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis

Published on: August 12, 2025

244

Bilateral carotid webs.

Muhammed Amir Essibayi1, Deena Nasr2, Giuseppe Lanzino1,3

  • 1Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA.

The Neuroradiology Journal
|May 18, 2021
PubMed
Summary
This summary is machine-generated.

Carotid webs, a fibromuscular dysplasia variant, increase stroke risk. This case highlights a patient treated successfully with antiplatelet and statin therapy, preventing recurrent ischemic events.

Keywords:
Bilateralcarotid webstroke

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Area of Science:

  • Vascular Neurology
  • Cerebrovascular Disease

Background:

  • Carotid webs are focal intimal abnormalities linked to stroke risk due to altered blood flow and coagulation.
  • Their exact developmental origins remain debated in medical literature.

Observation:

  • A 51-year-old woman experienced acute stroke symptoms including aphasia and sensory loss.
  • Brain MRI revealed an embolic infarct in the left middle cerebral artery (MCA) territory.
  • CTA and catheter angiography confirmed bilateral carotid webs causing flow abnormalities.

Findings:

  • The patient presented with symptoms consistent with an embolic stroke originating from bilateral carotid webs.
  • Medical management with clopidogrel and high-intensity statin therapy was initiated.
  • The patient remained event-free during a 10-month follow-up period on Plavix monotherapy.

Implications:

  • This case supports the role of carotid webs as a stroke etiology.
  • Conservative management with antiplatelet therapy may be effective in preventing recurrent ischemic events in select patients.
  • Further research into the pathogenesis and optimal treatment of carotid webs is warranted.