How Does the Cardiovascular System Work? Cardiovascular System The cardiovascular system includes blood, blood vessels and the heart performing well-known roles necessary to life. As blood flows through the body, it carries oxygen, hormones and enzymes to the cells and transports carbon dioxide and other wastes for removal from the body. Blood also prevents fluid loss through clotting and fights infection. Cardiac Cycle * The heart is a muscle that pumps blood throughout the body.
P4: The Cardiovascular system The cardiovascular system refers to the heart, blood vessels and the systematic circulation (blood). Blood contains oxygen and other nutrients which your body needs to survive. The body takes these essential nutrients from the blood. At the same time, the body dumps waste products like carbon dioxide, back into the blood, so they can be removed. The main function of the cardiovascular system is therefore to maintain blood flow to all parts of the body, to allow it to survive.
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.
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.
T-cells destroy foreign substances directly or indirectly by releasing various substances. B-cells respond to infection by differentiating into plasma cells, which secrete certain antibodies to eliminate foreign substances. They filter and help activate the immune system. After the fluids are filtered they’re collected by the efferent vessels and emptied to the cardiovascular system. Lymph nodes are important in the immune system.
The blood vessels are a intricate network of tubes that transport blood throughout the body. These vessels carry blood from the heart via the arteries ,then arterioles, then to capillaries or sinusoids, to venules, to veins and back to the heart. The final component to this structure is blood that delivers nutrients and removes wastes that are a by product of cellular processes that happen within the body. What is its
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.
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).
BIOS 255 WEEK 5 Lab 5 - Lymphatic System & Disease Resistance 1. Describe lymphatic system functions. The three major functions of the lymphatic system are: 1) It drains excess interstitial fluid from tissue spaces and return it to the blood. 2) It transports lipids and lipid-soluble vitamins absorbed by the gastrointestinal tract. 3) It carries out immune responses directed against particular microbes or abnormal cells.
| | Components and function of Blood Blood is used to transport materials around the body, and protect against disease. Blood contains plasma, a liquid that contains dissolved substance, cells and cell fragments. These include the following: Red blood cells | Transport oxygen – this cell in the blood of vertebrates that transports oxygen and carbon dioxide to and from the tissues. The red blood cell is disk; it contains hemogbin and lacks nucleus, | | White blood cells | Protect against disease - any of various blood cells that have a nucleus and cytoplasm, separate into a thin white layer when blood cells are separate from plasma cells, and help protect the body from infection and disease. White blood cells include – neutrophils, eosinophils, basophils, lymphocytes and monocytes.