e. Determine the direction of blood and lymph movement between arterioles, blood and lymph capillaries, and venules. Blood flows from arteries to capillaries to veins. Fluid that leaks out of the capillaries becomes interstitial fluid and is drained as lymph via the lymphatic circulation. Lymph flows from the interstitial tissue to lymphatic capillaries to larger lymphatic vessels to lymphatic ducts and ultimately into veins. f. Describe the lymphatic system role with regard to lipids and lipid-soluble vitamins.
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.
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.
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.
Red blood cell shapes like donate and it contains stretchable cells, which makes it flexible and flat so it can go through small areas. Over half of the interior of the red blood cells is filled with hemoglobin which gives it the red color. The function of the red blood cell is to transport oxygen to the cells and remove the carbon dioxide. Hemoglobin is the protein molecule in red blood cells which carries oxygen from the lungs to the body and returns the waste to the lungs. The tests that help the diagnosis of anemia is when the doctor is checks abnormal heartbeat, uneven breathing or even check the size of the liver.
Through apolipoprotein C-II, the mature chylomicrons activate lipoprotein lipase (LPL). Lipoprotein lipase is an enzyme found on the endothelial cells that line the blood vessels, which catalyzes the hydrolysis of triacyglycerol (glycerol covalently bonded to three fatty acids). Triacyglycerol releases glycerol along with fatty acids found in the chylomicrons. Fatty acids and glycerol can be absorbed in muscle, peripheral tissues, and adipose, for energy as well as storage. The hydrolyzed chylomicrons become chylomicron remnants.
| | 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.
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.
Adhesion of platelets is stimulated by the damage tissue; Platelets do not adhere to the endothelium that lines healthy blood vessels and the heart. The endothelium is very smooth and coated with prostacyclin. Release reaction is when the platelets grow long pseudopods that adhere to the vessels and to other platelets. They will contract, draw the wall of vessel together and the platelets will aggregate. Therefore, platelets undergo degranulation the exocytosis of their cytoplasmic granules and release of factors that promote hemostasis.
White blood cells or leukocytes, are a part of the immune system and help our bodies fight infection. They circulate in the blood so that they can be transported to an area where an infection has developed. In a normal adult body there are 4,000 to 10,000 white blood cells per microliter of blood. When the number of white blood cells in your blood increases, this is a sign of an infection somewhere in your body. Most white blood cells (neutrophils, eosinophils, basophils and monocytes) are formed in the bone marrow.