Coronary Circulation
Coronary Circulation - Related Videos
01:21
Coronary Circulation
0 Views •
2024
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively. Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
08:24
Isolation of Murine Coronary Vascular Smooth Muscle Cells
0 Views •
Cited by 11 •
2016
The purpose of this protocol is to demonstrate the isolation and culture techniques of murine primary vascular smooth muscle cells (VSMCs) from the coronary circulation. Once VSMCs have been isolated, they can be used for many standard culture techniques.
06:39
Ultrasound Based Assessment of Coronary Artery Flow and Coronary Flow Reserve Using the Pressure Overload Model in Mice
0 Views •
Cited by 20 •
2015
Coronary flow reserve (CFR) is useful for assessment of myocardial oxygen demand and evaluation of cardiovascular risk. This study establishes a step-by-step transthoracic Doppler echocardiographic (TTDE) method for longitudinal monitoring of the changes in CFR, as measured from coronary artery in mice, under the experimental pressure overload of aortic banding.
07:36
Isolation of Mouse Coronary Endothelial Cells
0 Views •
Cited by 18 •
2016
This protocol is prepared to share our method of isolating mouse coronary endothelial cells for the purpose of imaging or to conduct molecular biological experiments.
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)
0 Views •
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.
FAQs
During systole, the contracting myocardium compresses coronary vessels and restricts flow through them. When the heart muscle relaxes during diastole, this compression decreases, allowing more blood to move through the coronary circulation. This timing links the heart’s pumping cycle directly to its own oxygen supply and helps explain why impaired coronary flow can affect myocardial function.
Local metabolic signals adjust coronary blood flow according to the heart muscle’s needs. Adenosine is one such signal identified in coronary regulation. Its role connects myocardial activity with changes in vessel blood supply, helping match oxygen and nutrient delivery to the metabolic demands of contracting cardiac tissue rather than relying only on general circulatory control.
The right and left coronary arteries originate at the aortic root, placing them at the beginning of the vascular routes that supply the myocardium. Their branches distribute blood through the heart muscle, while cardiac veins collect returning blood. This organized arterial and venous arrangement allows coronary circulation to deliver resources and remove metabolic waste from cardiac tissue.
Myocardial ischemia occurs when the heart muscle does not receive an adequate coronary blood supply. Because coronary circulation delivers oxygen and nutrients to the myocardium, disruption of these vessels can compromise cardiac tissue. Studying this relationship helps connect vascular abnormalities with heart attacks and provides biological context for examining atherosclerosis and related cardiovascular disease.
Coronary angiography is a diagnostic application of coronary circulation research. It is used to examine the coronary vessels in the context of conditions such as atherosclerosis and myocardial ischemia. By focusing on the vessel network that supplies the myocardium, angiography supports evaluation of coronary abnormalities and helps relate vascular findings to potential cardiac consequences.
Revascularization treatments are relevant when disease affects the coronary vessels responsible for myocardial blood supply. Their inclusion in the study of coronary circulation reflects the clinical need to address impaired delivery to heart muscle. Together with angiography, these treatments connect biological understanding of coronary vessels with the assessment and management of ischemia and heart attacks.