What is collateral circulation?

What is collateral circulation?

The collateral circulation is a network of specialized endogenous bypass vessels that is present in most tissues and provides protection against ischemic injury caused by ischemic stroke, coronary atherosclerosis, peripheral artery disease, and other conditions and diseases.

What is anastomosis around scapula?

The scapular anastomosis is a system connecting certain subclavian artery and their corresponding axillary artery, forming a circulatory anastomosis around the scapula. It allows blood to flow past the joint in case of occlusion, damage, or pinching of the following scapular arteries: Transverse cervical artery.

What is the difference between anastomosis and collateral circulation?

Anastomosis is a connection between blood vessels or between two loops of the intestine while collateral circulation is an alternate blood flowing pathway around a blocked blood vessel. It is a result of the anastomosis. So, this is the key difference between anastomosis and collateral circulation.

Which artery supplies blood to the scapular region?

scapular circumflex artery
The subscapular trunk is typically the largest branch of the axillary artery. It gives rise to the scapular circumflex artery and the thoracodorsal artery. The scapular circumflex artery runs through the triangular space and provides blood to the scapular region.

What is mesenteric circulation?

The mesenteric circulation refers specifically to the vasculature of the intestines, whereas the splanchnic circulation provides blood flow to the entire abdominal portion of the digestive system that includes the hepatobiliary system, spleen, and pancreas. The primitive gut comprises the foregut, midgut, and hindgut.

What causes collateral circulation?

It may occur via preexisting vascular redundancy (analogous to engineered redundancy), as in the circle of Willis in the brain, or it may occur via new branches formed between adjacent blood vessels (neovascularization), as in the eye after a retinal embolism or in the brain when moyamoya occurs.

Which arteries are involved in scapular anastomosis?

Scapular and shoulder anastomoses The branches of the scapular anastomoses come from the subclavian artery and the axillary artery. Those of the shoulder are derived from the different segments of the axillary artery. The first member of the scapular anastomoses arises from the thyrocervical trunk.

What gives blood supply to the shoulder?

The brachial artery is the largest artery serving the shoulder and arm. It travels down the upper arm and through the elbow before dividing into the radial and ulnar arteries below the elbow. In the shoulder, branches of the brachial artery provide oxygenated blood to the muscles and bones.

What does suprascapular artery supply?

The suprascapular artery supplies the supra- and infraspinatus muscles and travels with the suprascapular nerve. It is a direct branch from the subclavian artery (12%), the thyrocervical trunk (27%) or the internal thoracic artery (11%).

How long can you live with collateral circulation?

NATIONAL HARBOR, MD—STEMI patients with good coronary collateral circulation undergoing PCI are more likely to be alive at 2 years and have better cardiac function when compared with STEMI patients without good collateral flow, a new study shows.

Which muscles does the suprascapular artery supply?

What are the 3 processes of the scapula?

The scapula has three processes: the acromion, the spine, and the coracoid process. Muscle attachments to these landmarks are covered in the “Muscles” section.

What nerve runs behind the shoulder blade?

The axillary nerve starts in your neck and extends to your shoulder. It causes movement and sensation in your shoulder and the back of your upper arm. Injuries to this nerve can affect your ability to rotate your arm or lift it.

What nerves are around the shoulder blade?

Nerves of the Shoulder

• Axillary Nerve – supplies the Deltoid muscle.
• Long Thoracic Nerve – supplies Serratus Anterior muscle and can cause Winging of the Shoulder.
• Suprascapular Nerve – supplies supraspinatus and infraspinatus muscles and can be entrapped or diseased.

What muscles are innervated by the suprascapular nerve?

The suprascapular nerve has a motor and sensory innervation. Its motor innervation is to the supraspinatus and infraspinatus muscles. The supraspinatus and infraspinatus muscles are two of the four muscles that make up the glenohumeral (shoulder) joint.