Brachial Artery The brachial artery is a blood supply vessel and is a continuation of the axillary artery. It begins under the pectoralis muscle and travels down the arm before splitting into two arteries the radial artery and the ulnar artery at the elbow.
Radial Artery The radial artery is one of two major blood vessels that supply blood to the forearm and hand. The radial artery comes from the brachial artery and travels across the front of the elbow.
In the forearm, it travels deep under muscle until it comes closer to the skin surface near the wrist. You can feel the pulse of the radial artery just under the skin on the thumb side of the wrist. After it travels across the wrist, the radial artery branches to form a network of blood supply vessels in the hand.
One of these vessels is called the deep palmar arch. Ulnar Artery The ulnar artery is one of two major blood vessels that supply blood to the forearm and hand. The ulnar artery comes from the brachial artery and travels across the front of the elbow. Smaller branches of the coronary arteries include: obtuse marginal OM , septal perforator SP , and diagonals. Since coronary arteries deliver blood to the heart muscle, any coronary artery disorder or disease can have serious implications by reducing the flow of oxygen and nutrients to the heart muscle.
This can lead to a heart attack and possibly death. Atherosclerosis a buildup of plaque in the inner lining of an artery causing it to narrow or become blocked is the most common cause of heart disease. Health Home Conditions and Diseases. What are the different coronary arteries? This occurs through two different circuits. The systemic circuit supplies the organs and tissues of the body with oxygen and other nutrients.
The pulmonary circuit allows blood to acquire fresh oxygen while getting rid of carbon dioxide. Damaged or narrowed arteries can lead to the body not getting an adequate blood supply, which can put you at risk for things such as heart attack or stroke.
But what does that mean? Checking your blood pressure at home with a manual or automated device can help you monitor your health between doctor visits. Staying active can help protect your heart as you age. Removing plaque from your arteries is difficult, and not something you can do at home.
Instead, focus on things you can do to prevent plaque from…. Deep vein thrombosis DVT is a serious condition that occurs when a blood clot forms in a vein located deep inside your body.
Learn how to spot…. Blood clots form for many reason and can lead to serious health problems. Find out what steps you can take to prevent dangerous blood clots from…. A large, new study suggests that people who have valvular atrial fibrillation AFib , or irregular heartbeat, had lower risk of ischemic stroke or…. Have you ever wondered what it feels like to have a blood clot? We explain some of the classic signs with help from three medical experts. This is achieved by myogenic response and by tubuloglomerular feedback in the kidney.
When blood pressure increases, the arterioles that lead to the capillary bed are stretched and subsequently constrict to counteract the increased tendency for high pressure to increase blood flow.
In the lungs, special mechanisms have been adapted to meet the needs of increased necessity of blood flow during exercise. When heart rate increases and more blood must flow through the lungs, capillaries are recruited and are distended to make room for increased blood flow while resistance decreases.
Privacy Policy. Skip to main content. Cardiovascular System: Blood Vessels. Search for:. Artery Function Arteries are high-pressure blood vessels that carry oxygenated blood away from the heart to all other tissues and organs. Learning Objectives Distinguish the function of the arterial system from that of venous system. Key Takeaways Key Points Arteries are blood vessels that carry blood away from the heart.
This blood is normally oxygenated, with the exception of blood in the pulmonary artery. Arteries typically have a thicker tunica media than veins, containing more smooth muscle cells and elastic tissue.
This allows for modulation of vessel caliber and thus control of blood pressure. The arterial system is the higher-pressure portion of the circulatory system, with pressure varying between the peak pressure during heart contraction systolic pressure and the minimum diastolic pressure between contractions when the heart expands and refills.
The increase in arterial pressure during systole, or ventricular contraction, results in the pulse pressure, an indicator of cardiac function. Key Terms systolic pressure : The peak arterial pressure during heart contraction. Elastic Arteries An elastic or conducting artery has a large number of collagen and elastin filaments in the tunica media.
Learning Objectives Distinguish the elastic artery from the muscular artery. Key Takeaways Key Points Elastic arteries include the largest arteries in the body, those closest to the heart.
They give rise to medium-sized vessels known as muscular, or distributing, arteries. Elastic arteries differ from muscular arteries both in size and in the relative amount of elastic tissue contained within the tunica media.
Arterial elasticity gives rise to the Windkessel effect, which helps to maintain a relatively constant pressure in the arteries despite the pulsating nature of blood flow. Key Terms elastic arteries : An artery with a large number of collagen and elastin filaments, giving it the ability to stretch in response to each pulse. The Aorta Due to position as the first part of the systemic circulatory system closest to the heart and the resultant high pressures it will experience, the aorta is perhaps the most elastic artery, featuring an incredibly thick tunica media rich in elastic filaments.
Muscular Arteries Distributing arteries are medium-sized arteries that draw blood from an elastic artery and branch into resistance vessels. Learning Objectives Distinguish muscular arteries from elastic arteries.
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