The wave passes to the atrioventricular node where it is passed down the septum down specialised fibres known as the bundle of His. This occurs after a short delay to allow all the blood to flow from the atria to the ventricles. This wave passes down the bundle of His to the Apex of the heart where the Ventricles contract upward, pumping blood out of the ventricles into the pulmonary artery and aorta through the semilunar valves. Here the blood is then passed round the body where it
Week 2 : Cardiovascular System: The Blood Vessels - Quiz ------------------------------------------------- Top of Form Time Remaining: | | 1. (TCO 1) All deoxygenated blood returning from the systemic circulation flows into the: (Points : 2) | Right Atrium Left Ventricle Left Atrium Right Ventricle | 2. (TCO 1) Intercalated discs: (Points : 2) | initiate the heart beat. anchor the heart in place within the mediastinum. prevent eversion of valves.
As we continue to make our way to the heart, we merge with the right external iliac vein. This is also another name for the femoral vein, and is also considered a deep vein in the lower leg. Its main responsibility is taking deoxygenated blood from the legs back to the heart. It is located right behind the inguinal ligament in the lower abdomen. The inguinal ligament support the area between the abdomen and the thigh (Inguinal Ligament, n.d.).
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.
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.
This pumping action of blood flow is controlled by electrical impulses in the heart. It begins at the Sinoatrial node (SA node), located in the right atrium. When the blood fills in the right atrium, the electrical signal sends an impulse across the left and right atria, which cause the atria to contract. The P wave on an EKG marks the contraction of the atria. The signal then arrives from the SA node to the Atrioventricular node
2. Insert a glass rod into the pulmonary artery and see it come through to the right ventricle. Make an incision down through this artery and look inside it for three small membranous pockets. These form the pulmonary semi-lunar valves which prevent blood from flowing back into the right ventricle. 3.
The blood consists of two major portions: blood cells and plasma. The functions of the cardiovascular system: the cardiovascular system is so important to our body, that if it stops for a minute, rapid death will occur. The flow of blood is necessary for existence of life. If the flow of blood stopped, life will stop. Cardiovascular system has three main functions: Transport of nutrients, oxygen and hormones to cells throughout our body and removal of metabolic wastes such as (carbon dioxide and nitrogenous wastes).
http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs. As the deoxygenated blood continues on its journey through the heart from the right ventricle, it makes its exit by way of the pulmonic valve. This structure is a one-way valve with prevents the flow of blood back into the right ventricle once it leaves the heart. http://www.healthline.com/human-body-maps/pulmonary-valve The mitral valve: This valve is located between the left atrium and the left ventricle. As the now oxygenated blood flows back through the left atrium, it does so under increased pressure.
Cardiovascular System: Blood Lab Report assistant Exercise 1: Observing Blood Questions A. What are the components of blood? Components of blood are: Red blood cells White blood cells Plasma and Platelets B. What is the function of red blood cells? The main function of red blood cell is to transport oxygen in blood to all cells of the body.