Intercostal Artery
Intercostal Artery - Related Videos
06:57
Arterial Line Placement
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2023
Source: Sharon Bord, MD, Department of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA When monitoring patients, it is important to obtain values that are accurate and reliable. Blood pressure monitoring is one of the essential vital signs, and for a majority of patients, measuring it utilizing non-invasive techniques provides accurate values. However, there are situations in which the blood pressure requires more exact, specific, and reliable measurements.
13:10
Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery (ALCAPA)
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Cited by 7 •
2017
Surgical correction of ALCAPA is highly recommended, regardless of age or the degree of intercoronary collateralization. This protocol presents a technique for the direct re-implantation of adult-type ALCAPA into the aorta to re-establish the dual-coronary perfusion. Whenever feasible, direct re-implantation is preferred to other surgical correction techniques.
07:41
Coronary Artery Ligation and Intramyocardial Injection in a Murine Model of Infarction
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Cited by 47 •
2011
Numerous genetic manipulations and/or intramyocardial injections of genes, proteins, cells, and/or biomaterials are superimposed upon the dimension of time in studies of acute ischemia/ reperfusion injury and chronic remodeling in mice. This video illustrates the microsurgical procedures for ischemia/reperfusion, permanent coronary artery ligation, and intramyocardial injection studies.
11:07
A Murine Model of Myocardial Ischemia-reperfusion Injury through Ligation of the Left Anterior Descending Artery
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Cited by 82 •
2014
We introduce a surgical method to induce experimental ischemia/reperfusion (I/R) injury to simulate myocardial infarction (MI) in mouse models that allows for more clarity in positioning of the ligation on the left anterior descending artery (LAD) to increase the reproducibility of MI experiments in mice.
04:28
Cannulation of the Carotid Artery in a Rat Model
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2025
In this video, we demonstrate a surgical procedure to cannulate the left carotid artery in a rat model.
FAQs
The arterial supply is organized by region: posterior intercostal arteries generally arise from the thoracic aorta, whereas anterior intercostal arteries branch from the internal thoracic or musculophrenic arteries. This arrangement gives the thoracic wall contributions from vessels with different proximal sources. Recognizing that distinction helps explain how blood reaches related intercostal regions from both posterior and anterior directions.
Within an intercostal space, an intercostal artery travels with an intercostal vein and nerve, forming an accompanying neurovascular arrangement. Its position along the inferior margin of a rib is therefore not an isolated landmark, but part of a consistent relationship among three structures. Collateral branches add connections within this network, supporting continuity of circulation across the thoracic wall.
Collateral branches connect arterial pathways rather than leaving each segment dependent on a single route. In biological terms, these connections link vessels associated with different portions of the thoracic wall. Studying the main artery together with its collateral branches provides a more accurate picture of thoracic circulation than tracing only the vessel's primary origin.
During thoracic procedures, the artery's course should be considered together with the vein and nerve that accompany it. The vessel's position near a rib creates a specific anatomical relationship that can guide interpretation of the operative field. Accounting for this arrangement helps clinicians plan interventions while reducing the possibility of bleeding or unintended tissue injury.
Anatomical interpretation benefits from distinguishing anterior and posterior arterial sources rather than treating all intercostal vessels as identical. Posterior branches relate to the thoracic aorta, while anterior branches relate to the internal thoracic or musculophrenic arteries. This source-based map can help organize chest anatomy during planning and clarify which arterial pathways may be encountered in a given thoracic region.
In biology, the intercostal artery illustrates how regional blood supply is integrated with surrounding structures. Its relationship to the ribs, intercostal spaces, accompanying vein and nerve, and collateral branches demonstrates that vessel function depends on anatomical organization, not merely on an isolated tube. This perspective is useful when interpreting thoracic-wall circulation and connecting gross anatomy with clinical considerations.