Anatomy of the Thorax - Circulatory System - of the Dog - part 1 скачать в хорошем качестве

Anatomy of the Thorax - Circulatory System - of the Dog - part 1

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis. The circulatory system is often seen to comprise two separate systems: the cardiovascular system, which distributes blood, and the lymphatic system, which circulates lymph. ​ Circulatory system consists of: The heart: pumps oxygenated blood to the body and deoxygenated blood to the lungs Blood vessels: Arteries: Oxygenated blood enters the systemic circulation when leaving the left ventricle, through the aortic semilunar valve. Veins: After their passage through body tissues, capillaries merge once again into venules, which continue to merge into veins. Capillaries: Arteries branch into small passages called arterioles and then into the capillaries. The capillaries merge to bring blood into the venous system. The lymphatic system is part of the circulatory system. It is a network of lymphatic vessels and lymph capillaries, lymph nodes and organs, and lymphatic tissues and circulating lymph. One of its major functions is to carry the lymph, draining and returning interstitial fluid back towards the heart for return to the cardiovascular system, by emptying into the lymphatic ducts. Its other main function is in the adaptive immune system. Pulmonary circuit: carries blood to and from the lungs. Systemic circuit: transports blood to and from the rest of the body. Don't forget to subscribe, share and hit the bell to get notifications for the other related anatomical videos. Visit our Facebook page:   / animalsanatomy   ​ Dr. Aiyan