Heart study guide on cardiovascular system

Cardiovascular system function

The anterior and posterior tibial veins and the fibular vein drain the leg; the posterior tibial veins becomes the popliteal vein at the knee and then the femoral vein in the thigh; the femoral vein becomes the external iliac vein as it enters the pelvis. Cardiac Circulation Vessels Although the heart chambers are bathed with blood almost continuously, the blood contained in the heart does not nourish the myocardium. The pulmonary circulation pathway, in the correct sequential order, consists of: Deoxygenated blood is sent into the right atrium from the superior and inferior vena cava which are the major veins of the body Deoxygenated blood from the right atrium goes through the right atrioventricular valve into the right ventricle The right ventricle contracts The deoxygenated blood from the right ventricle goes through the pulmonary valve into the pulmonary artery The pulmonary artery carries the deoxygenated blood into the lungs for reoxygenation The systemic circulation pathway begins after the last phase of the pulmonary circulation pathway. This contraction effectively ejects blood superiorly into the large arteries leaving the heart. Basilic vein. Additionally, the respiratory system, which is also anatomically connected to the heart, was also discussed separately above. The ultimate distribution cannot be completely shown in this diagram. Some effects of stroke are permanent if too many brain cells die after being starved of oxygen. The radial and ulnar veins are deep veins draining the forearm; they unite to form the deep brachial vein, which drains the arm and empties into the axillary vein in the axillary region.

Blood Vessels Blood circulates inside the blood vessels, which form a closed transport system, the so-called vascular system. Axillary artery. It is the arteries of the body, and NOT the veins, that carry oxygenated blood with the exception of the pulmonary veins.

Ventricular contraction. The heart can beat too slow, too fast or irregularly. Learn more about heart failure.

Heart circulatory system

The anterior and posterior tibial veins and the fibular vein drain the leg; the posterior tibial veins becomes the popliteal vein at the knee and then the femoral vein in the thigh; the femoral vein becomes the external iliac vein as it enters the pelvis. Each beat of the heart consists of both systole and diastole. Blood Circulation Through the Heart The right and left sides of the heart work together in achieving a smooth flowing blood circulation. As the heart beats, blood is propelled into large arteries leaving the heart. The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave-a pulse- that travels through the entire arterial system. Radial and ulnar veins. The depolarization wave is initiated by the sinoatrial node.

Over time, as injured cells repair themselves, previously impaired function improves. The endocardium is the inner most layer of the heart.

Heart study guide on cardiovascular system

Tricuspid valve. The tricuspid valve is also an atrioventricular valve.

Cardiovascular system diagram

The third branch of the aortic arch, the left subclavian artery, gives off an important branch- the vertebral artery, which serves part of the brain. Axillary artery. First heart sound. The myocardium is the muscular part of the heart. The valves of the heart secure a one-way blood flow through the heart and blood vessels. Arterial Branches of the Ascending Aorta The aorta springs upward from the left ventricle of heart as the ascending aorta. The left atrium, as shown in the picture above, anatomically lies at the top of the heart and on the left side of the heart. The four chambers of the heart are separated from each other with septums. Layers of the Heart The heart muscle has three layers and they are as follows: Epicardium. Common iliac vein.

Serous pericardium. Although medical opinions tend to change and are at odds from time to time, it is generally believed that a diet low in salt, saturated fats, and cholesterol help to prevent hypertensionor high blood pressure.

circulatory system nursing
Rated 9/10 based on 91 review
Download
Cardiovascular System Anatomy and Physiology: Study Guide for Nurses