The lungs add oxygen to the blood and remove carbon dioxide. Then the left side is responsible for accepting blood from the lungs and pumping it back out into the body. Think of it like a cycle where blood flows like this: From the body into the top right chamber (right atrium) -- down into the bottom right chamber (right ventricle) -- out to the lungs -- back to the top left chamber (left atrium) -- down to the bottom left chamber (left ventricle) -- then out to the body. The heart is innervated by the autonomic nervous system, but it also has its own system to generate electrical impulses that stimulate cardiac muscle to contract. These electrical impulses can be recorded in an ECG (electrocardiogram) and used to detect problems with the heart.
The right atrium pumps blood into the right ventricle. Then the right ventricle pumps blood to the pulmonary trunk, through the pulmonary arteries and into the lungs. In the lungs the blood picks up oxygen that we breathe in and gets rid of carbon dioxide, which we breathe out. The blood is becomes rich in oxygen which the body can use. From the lungs, blood drains into the left atrium and is then pumped into the left ventricle.
These four chambers are separated from each by various valves. The tricuspid valve separates the right atrium and right ventricle and the mitral separates the left atrium and left ventricle. Two valves separate the ventricles and the large blood vessels. The aortic valves separates the left ventricle and the aorta and the pulmonic valve which separates the pulmonary artery and the right ventricle. The blood vessels are a intricate network of tubes that transport blood throughout the body.
The air we breathe in that is held in the lungs is transferred through the blood and the heart is involved with blood circulation where oxygenated blood is pumped from the lungs to the rest of the body. These two systems also work together to remove metabolic waste such as carbon dioxide. The heart is the main site these two systems work together. The heart consists of 2 atria and 2 ventricles. The right ventricle and atrium are responsible for receiving blood from veins.
The capillaries are part of the cardiovascular system. The oxygen binds with the haemoglobin, which is a red pigment located in the red blood cells. The oxygen is transported to the pulmonary veins and oxygenated blood is pumped to the left side of the heart. From the left ventricle, the oxygenated blood is pumped through the aorta, travels to smaller arteries until it reaches the capillaries. The oxygen from the oxygenated blood moves out from the capillaries and travels to the cells of the body.
Once the capillaries have delivered their oxygen, they also absorb excess carbon dioxide into the blood and then deliver it to the veins, which then supply the blood back to the heart. The respiratory system is primarily comprised of the airways, the lungs and the structures (such as muscles) that help move air in and out of the lungs. The airway, which begins with the nose and mouth, continues down through the throat into the bronchi, which are small airways that eventually feed into the lungs, which are lined with cells called alveoli. The other part of the respiratory system is the muscles, such as the intercostals (muscles between the ribs) and the diaphragm, which cause the lungs to expand and contract. When the size of the lungs changes, so does the pressure inside, leading to air either coming in (inhalation) or being forced out (exhalation).
‘Describe the cardiac cycle and relate the structure and operation of the mammalian circulatory system to its function’ The cardiac cycle is an repeating sequence of contraction and relaxation of the atria and ventricles. The cardiac cycle allows for blood to be continuously transported around the body via the circulatory system. The features of the heart and the circulatory system are adapted in order for their functions to be carried out correctly. The first stage of the cardiac cycle is atrial systole/ventricular diastole. The atria contract, which decreases the volume of the atrium and increases the pressure within it.
Lab Report: Coronary transport of the heart Introduction: The heart is an organ of the cardiovascular system. Using blood as the transport vehicle, this system functions to transport substances around the body that are vital to homeostasis. In this lab, the experiment will be to locate and identify the various structure of the heart and also to trace the coronary circulation. Also with prepared slides, the objective will be to compare and contrast the different structures of cardiac muscle to that of smooth muscle. Materials: Heart model, Marieb and Mitchell laboratory manual, microscopic slides, camera, and microscope Procedure: Each lab group observed the external and internal surfaces of the heart, locating and identifying the three layers and the heart wall, the four chambers of the heart and the structures associated with them, locating and identifying the fossa ovalis, pectinate muscles, papillary muscles and chordae tendinae.
Also traveling through the arteries is fresh blood, which brings oxygen and other nutrients to all parts of the body, including your breasts. They’re distributed throughout the body. The Cervical lymph nodes are located in the head and neck. The Axillary lymph nodes are in the underarm area, divided into two types, superficial and deep lymph nodes. Supraclavicular lymph nodes are along the clavicle and collarbone.
1. A) Describe the cellular and the non-cellular components of human blood and how they move around the body. The circulatory system is responsible for the transport of blood throughout the body and consists of the heart (a pump), the lungs (a gas exchanger) and the vascular system of arteries, capillaries and veins (plumbing). Blood, which runs through this vascular system, contains both cellular and non-cellular components. The major cell type found in blood is red blood cells, whose role is to transport oxygen and carbon dioxide into and out of the body.