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 main functions of the blood are to transport, defence, regulation and clotting. The oxygen is carried from the lungs to the cells of the body in red blood cells. Carbon dioxide is carried from the body’s cells to the lungs. Cellular waste such as water, carbon dioxide, lactic acid and urea are carried in the blood to be excreted. Hormones, internal secretions that help to control important body processes are also transported by blood to target organs.
BIOS255 BIOS 255 WEEK 5 Lab 5 - Lymphatic System & Disease Resistance 1. Describe lymphatic system functions. The primary functions of the lymphatic system are to drain and return interstitial fluid to the blood to absorb and return lipids from the digestive system to the blood, and to filter fluid of pathogens, damaged cells, cellular, and cancerous cells to help protect against invasion. 2. Locate each of the following lymphatic vessels: right lymphatic duct, thoracic (left lymphatic) duct, right and left subclavian veins, and cisterna chyli.
| | 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.
Cardiovascular system The cardiovascular system consists of our heart (left and right ventricle, left and atrium, aorta, tricuspid valves, semi-lunar valves, vena cava, pulmonary artery and pulmonary vein), blood and blood vessels (renal artery, hepatic artery, renal vein and hepatic vein). The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. Digestive system The digestive system consists of the stomach, pancreas, liver, small intestine (duodenum, ileum and jejunum) and the colon (ascending colon, transverse colon, descending colon and sigmoid colon). The digestive system is used for digesting foods to a soluble form for the small intestine to absorb the minerals and vitamins and then what is left of the food is transported to the colon for water reabsorption and then excreted through the anus. Endocrine system The endocrine system is the system of glands, each of which secretes different types of hormones directly into the bloodstream to maintain homeostasis.
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.
Urinary and Reproductive Systems Dissection Urinary System Kidney The kidneys are paired organs with several functions. They are an essential part of the urinary system and serve homeostatic functions such as the regulation of electrolytes, maintenance of acid-base balance, and regulation of blood pressure. They serve the body as a natural filter of the blood, and remove wastes, which are diverted to the urinary bladder. In producing urine, the kidneys excrete wastes such as urea and ammonium; the kidneys also are responsible for the reabsorption of water, glucose, and amino acids. The kidneys also produce hormones including calcitriol, renin, and erythropoietin.
The Respiratory System is made up of organs in your body that helps you breathe. When we breathe, the body takes in the oxygen that it needs and removes the carbon dioxide. The system consists of the nose, mouth, trachea, lungs, and diaphragm. The air enters into two places, the nose, and the mouth. The nose is also called the nasopharynx, and the mouth is also called the oral pharynx.
It is a series of physical reactions that transform liquid blood into a gel that forms a secure patch over the damaged blood vessel. Coagulation has three main stages: Formation of factor x and prothrombinase, Prothrombin is converted to thrombin and finally Fibrinogen is converted to fibrin. The clot is formed by these stages. It is then strengthened by a process called Clot Retraction. This is here platelets in the clot contract pulling on the fibrin strands that they are attached to.
The right atrium receives deoxygenated blood via the superior and inferior vena cava. The blood then goes through the right ventricle and out to the lungs where it becomes oxygenated. The oxygenated blood then travels to the left atrium via the pulmonary veins, to the left ventricle, and then out to the rest of the body and organs through the aorta. The blood also supplies oxygen and nutrients to the heart via the coronary arteries that branch from the aorta. This pumping action of blood flow is controlled by electrical impulses in the heart.