The abdominal aorta supplies the abdominal walls, viscera, and ends at T4 level where it branches into right and left common iliac arteries to supply the pelvis and lower limbs. The superior vena cava vein receives systemic blood draining from all areas superior to the diaphragm except the heart wall. It unites with the right and left brachiocephalic veins and empties into the right atrium. Both brachiocephalic veins are formed by the joining of the internal jugular and subclavian veins. The inferior
Right now I am located in the right femoral vein, which is located in the upper thigh and pelvic region of the body. It is also one of the largest veins in the venous system. The femoral vein’s purpose is to take all the blood in the lower region of the body and deliver it to the heart via the iliac vein. Today’s
P3 Outline the gross structure and function of all the main body systems Cardiovascular - Heart The heart is a muscular hollow organ and is the size of an adults closed fist. It is located in the thoracic cavity between the lungs and protected by the rib cage. The heart is a double pump, each side consisting of a muscular upper chamber (the atrium) and a lower chamber (the ventricle). (Stretch B, 2010, P199) The heart is split into 4 different sections, the right side (tricuspid) of the heart pumps deoxygenated blood from the veins to the lungs for oxygenation. The left side (bicuspid) pumps oxygenated blood from the lungs to the body; the left chamber has a bigger muscular wall than the other chambers and is stronger, so it is able to pump the blood the whole of the body including the head and neck, as it is against the force of gravity.
The blood vessels are pathways of blood flow in the body. There are three main types of blood vessels: Arteries, capillaries and veins. Whatever the blood is a specialised tissue of the human body that exists in fluid form. It’s one of the five basic types of tissues of the body. The blood consists of two major portions: blood cells and plasma.
The lymph vessels collect fluid, called lymph from the body tissues and return it to the blood, maintaining the fluid balance within the body. Lymph filters through the lymph nodes, which are packed with white blood cells known as lymphocytes. These are produced in the bone marrow, spleen and thymus, and they help to protect the body against infections. Spleen: This is the largest lymphatic organ. It is located on the left side of the body just above the kidney.
(Points : 2) | SA node, AV bundle, bundle branches, AV node, conduction myofibers AV node, SA node, AV bundle, bundle branches, conduction myofibers SA node, AV node, AV bundle, bundle branches, conduction myofibers conduction myofibers, AV bundle, bundle branches, AV node, SA node | 4. (TCO 1) Blood flows from the superior vena cava into the: (Points : 2) | Right Atrium Inferior Vena Cava Left Atrium Right Ventricle | 5. (TCO 1) Blood flows into the coronary arteries from the: (Points : 2) | Descending Aorta Coronary Sinus Ascending Aorta Pulmonary Trunk | 6. (TCO 2)The internal jugular veins receive blood from the: (Points : 2) | superior vena cava. brachiocephalic veins.
The heart consists of 2 ventricles, and also 2 atria. There is a right atrium and also ventricle, this is where the blood comes from the veins. The deoxygenated blood then goes into the right atrium of the heart. Blood is released from the atrium and goes into the right ventricle, this happens when the heart relaxes, this is where the right ventricle pushes blood in through pulmonary valve and eventually into pulmonary artery, this is the place where the blood its given to the lungs because to get back oxygen. Lastly the blood is then given back to hearts left side.
The serous membrane secretes serous fluid into the space between the visceral and parietal layers that allows smooth movement between the layers, when the heart beats. The Myocardium: The myocardium is the middle layer of the heart and is composed of specialised muscle tissue called as the cardiac muscle, on which the circulation of blood depends. It varies in thickness, being thickest in the left ventricle, thinner in the right ventricle and thinnest in the artrium. The Endocardium: The endocardium forms the inner linging of the heart is a thin, smooth, glistening membrane consisting of flattened epithelial cells which is continuous with the valves and with the lining of the blood
Blood flows past the aortic semilunar valve when the contracts. A. left atrium B. right atrium C. left ventricle D. right ventricle 5. Which is true? A. The left atrium contracts before the right atrium.
Describe the four valves of the heart, including their name, location, and function. The four valves of the heart are the tricuspid valve, the pulmonic valve, the mitral valve, and the aortic valve. The tricuspid valve: It is located between the right atria and the right ventricle. It is comprised of three “flap-like cusps” which when in its closed position, prevents the deoxygenated blood entering the heart from the body, from backing up in the right atrium from the right ventricle (regurgitation). http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs.