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Collateral Blood Vessels
Collateral Blood Vessels Small capillary-like branches of the artery that form over time in response to narrowed coronary arteries. The collaterals "bypass" the area of narrowing and help to restore blood flow. However, during times of increased exertion, the collaterals may not be able to supply enough oxygen-rich blood to the heart muscle.
RELATED TERMS--------------------------------------
Artery
A blood vessel that carries blood from the heart to the body.
Arteries
Blood vessels that carry blood away from the heart to the arms, legs, head, body and organs.
Blood
The life-maintaining fluid which is made up of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets; blood circulates through the body's heart, arteries, veins, and capillaries; it carries away waste matter and carbon dioxide, and brings nourishment, electrolytes, hormones, vitamins, antibodies, heat, and oxygen to the tissues.
Heart
The hollow, muscular organ responsible for pumping blood through the circulatory system.
Muscle
Tissue made up of bundles of long, slender cells that contract when stimulated.
SIMILAR TERMS--------------------------------------
Collagen
At a microscopic level, this is the 'skeleton' of most tissues in the body.
Collagen disease
See 'Connective tissue disease'.
Collagen injection
The practice of injecting collagen into a part of the face or body to make it larger, most often performed on the lips. The effects are long lasting but not permanent. Collagen injections are normally done by a plastic surgeon.
Collagenous colitis
A type of colitis. Caused by an abnormal band of collagen, a thread-like protein.
Collapsed lung
Failure of full expansion of a once fully expanded lung. Medically called atelectasis.
Collarbone
A horizontal bone above the first rib that makes up the front part of the shoulder.
Collateral
In anatomy, a collateral is a subordinate or accessory part. A collateral is also a side branch, as of a blood vessel or nerve.
Collateral knee ligament, lateral
The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The lateral collateral ligament of the knee is on the outside of the joint.
Collateral knee ligament, medial
The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The medial collateral ligament of the knee is on the inner side of the joint.
Collective unconscious (universal consciousness)
Alleged inborn psychological bedrock--common to all humans but varying with the particular society, people, or race--that enables telepathy.
College Hospital Costa Mesa
The College Hospital Costa Mesa is a hospital in Orange, California, United States.
College Station Medical Center
College Station Medical Center is a hospital in College Station, Texas (USA).
Colles fracture
Fracture of distal radius and ulna just proximal to the wrist.
Collins Health Center
The Collins Health Center is a hospital in Pittsburgh, Pennsylvania, United States.
PREVIOUS AND NEXT TERMS--------------------------------------
Clotting Factors
A group of chemicals in the blood, including fibrinogen, prothrombin, and calcium, that combine to form thrombi.
Clubbing
The ends of the fingers and toes enlarge and bend inward; related to inadequate oxygen-rich blood supply. Often seen with congenital heart defects, but also seen in other conditions.
CPR (cardiopulmonary resuscitation)
A procedure using cardiac and respiratory equipment and medications possibly to restore the heartbeat and/or breathing.
Coagulation Problems
Problem with blood clotting, either too much clotting or not enough.
Coarctation of the Aorta
A severe narrowing of the aorta, causing a decrease in blood flow to the lower part of the body. This narrowing is a congenital defect and can be corrected with surgery.
Collateral Blood Vessels
Commissurotomy
The heart valves are made up of leaflets. The leaflets touch each other and the edge of the area where they come in contact is known as the commissures. In some patients, specifically those with rheumatic heart disease, the commissures can become scarred and fail to open and allow blood to flow through easily. In situations like this, the commissures can be released or reopened with a procedure known as commissurotomy.
Complete Heart Block (heart block)
An arrhythmia. The electrical current is slowed between the atria and ventricles. In more severe cases, conduction is blocked completely and the atria and ventricles beat independently.
Complex Carbohydrates
Starchy foods that are good sources of energy and nutrients, such as bread, rice, pasta and grains.
Congestive Heart Failure (CHF or heart failure)
A condition where the heart muscle weakens and can not pump blood efficiently throughout the body.
Connective Tissue Disease
Disease caused by problem with collagen (the elastic support system in the body); can have a vascular component. Examples include Systemic Lupus Erythematosus (SLE), rheumatoid arthritis (RA). Can also be referred to mixed connective tissue diseases (MCTD)
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