Hepatic portal vein

glomerulus and into the efferent arteriole. The varying sizes of these arterioles help to create the hydrostatic pressure and to maintain consistency of glomerular capillary pressure and renal blood flow within the glomerulus Before returning to the renal vein, blood from the efferent arteriole enters the peritubular capillaries and the vasa recta and flows slowly through the cortex and medulla of the kidney close to the tubules. peritubular capillaries - surround the proximal and distal…

The arteries are blood vessels that deliver oxygen and nutrients to all organs in the body during the heart pulses. During the blood circulation a pressure is exerted on the walls of the blood vessels or arteries. The case where the ability of such walls to expand or contract in response to blood pressure changes is called Arterial Stiffness (AS). Arteries need to be flexible to expand when oxygen is needed by muscles and heart, and stiffening of the arteries place an extra load on heart which…

Homeostasis is a key factor in helping the body to maintain optimum conditions for life. It aids in keeping a steady environment inside the body when the external environment is constantly changing. ( Peate, I. and Nair, M. 2011) Humans need to maintain a near constant environment internally to be able to function and to survive. There are various control systems at work in the process of homeostasis, such as negative feedback and the receptor, controller and effector loop. The receptor,…

Pseudoaneurysm A pseudoaneurysm occurs when there is injury to an artery. The injury allows blood to leak out of the artery. The leaking blood collects or pools and is contained in the nearby tissues. CAUSES The most common cause of this condition is a procedure that involves inserting a thin tube (catheter) into an artery, such as an angiogram. After an angiogram, if the insertion site does not fully seal, blood may leak out of the artery. Other causes include: • Trauma to the walls of an…

internal jugular veins as well. As the external jugular veins descend through the lateral neck, they pass obliquely over the sternocleidomastoid muscles and then empty into the subclavian veins. The brachiocephalic vein a vein that returns oxygen-depleted blood from the upper limbs, neck, and head to the heart. There is a brachiocephalic vein on the left side of the neck and one on the right. The two brachiocephalic veins merge together with the azygos vein, which carries deoxygenated blood from…

Forskolin This Forskolin substance that people are talking about is a natural medical herb. It comes from the base or the root of the Plectranthus barbatus plant. Forskolin is a member of the mint conglomerate which is fathered by the plant Coleus forskohlii. For many years, natives of Thailand, India and Nepal have used Forskolin to mend heart problems, angina and even hypertension. Apparently, the substance acts within the heart muscles and walls of the blood vessels to render an…

1 Cardiopulmonary bypass (CPB) 1.1 Introduction Cardiovascular diseases are the leading cause of death globally. Different types of cardiac operations are performed every day in hospitals varying in complexity to treat several lesions such as coronary artery bypass graft, heart valve replacement and total heart replacement. Cardiopulmonary bypass (CPB) is a crucial technique employed in the majority of these operations (Punjabi and Taylor 2013). It takes over the function of the heart and…

Aneurysm is a common disease affecting about half of the world population, mostly find in men. Aneurysm origin is usually the walls of the blood vessels or the branches of the arteries. As the Aneurysm grows it tends to get larger in the walls of the arteries which can cause discomfort. There are two main types of aneurysm: cerebral aneurysm and aorta aneurysm. An aneurysm can be diagnose with .Regular screening or x-ray, and once taken place, the doctor can determine if surgery is needed…

Blood is the only liquid in the body that is classified as connective tissue. Its function is to transport oxygen, metabolic wastes such as carbon dioxide and nitrogenous waste from the kidneys. Regulation of the body’s pH, body temperature, and maintenance of the liquid volume in the circulatory system. Lastly, protection by way of Leukocyte activation and preventing blood loss by way of the platelets in the blood. Blood is composed of 55% plasma (water, salts, plasma proteins, and other…

2.1. The left ventricle and interventricular septum The heart has two inferior chambers, called the right and left ventricles, respectively. These chambers are the “pumps” that expel blood into the blood vessels and keeps it flowing through the body (Rizzo, 2016). The left ventricle is a cavity that has thick muscular walls that contains the papillary muscles as well as the chordae tendinae that attaches the atrio-ventricular valve leaflets to the papillary muscles (Leeson, Augustine,…