Controlling the rhythm and speed of your heart rate How does the heart function? The heart pumps blood through a system of blood vessels called the circulatory system. Blood vessels are of three types: arteries, capillaries, and veins. These blood vessels carry blood to and from the heart. ...
All exchanges between the cells and the blood occur in the capillaries. This is always the case in a circulatory system. The force of the pump, or the heart in this case, pushes blood through the arteries. The blood dissipates as it flows through the capillaries. Because the capillaries ar...
Tunica externa is made up of connective tissue, tunica media is made up of collagen fibers and un-striped muscles. Tunica interna is made up of endothelium and connective tissue. Lumen of arteries is small and valves are absent in arteries. Arteries do not collapse when empty....
The circulatory system is a network ofbloodvessels that transport blood throughout the body. The heart pumps blood through thearteriesto the tissues of the body, and veins return blood from the tissues back to the heart. The circulatory system also helps to regulate the body’s temperature and...
The scrotum is supplied with blood by the external pudendal branches of thefemoral artery, which is the chief artery of the thigh, and by the scrotal branches of the internal pudendal artery. The veins follow the arteries. The lymphatic drainage is to the lymph nodes in the groin. ...
Pulmonary vein diagram.The pulmonary veins and arteries in the human. physiology Ask the Chatbot a Question More Actions Print Cite Share Feedback External Websites Also known as: pulmonary blood stream Written and fact-checked by The Editors of Encyclopaedia Britannica ...
tissues of the body, and back to the right atrium constitutes thesystemic circulation.Blood pressureis greatest in the left ventricle and in the aorta and its arterial branches. Pressure is reduced in thecapillaries(vessels of minute diameter) and is reduced further in the veins returning blood ...