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75 Cards in this Set
- Front
- Back
The heart blood vessels, and blood make up the ____ system.
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circulatory
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List three ways in which the circulatory system helps maintain homeostasis of interstitial fluid.
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-supplies nutrients
-removes wastes and carbon dioxide -removes excess ions (salts) and water |
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List three functions of blood.
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-Transportation
-Regulation -Defense |
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What percentage of body weight is occupied by blood?
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8%
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Blood is composed of two parts, the liquid component, ___ and the cellular component of ___, ___, and ____.
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-plasma
-RBCs -WBCs -platelets |
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Percentage of plasma in blood.
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55%
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Percentage of red blood cells in blood.
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44%
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Percentage of white blood cells and platelets in blood.
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1%
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90% of plasma is composed of ____.
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water
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10% of plasma consists of ____,____,____,_____,_____, and ______.
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-proteins
-electrolytes/ions -hormones -gases -nutrients -wastes |
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Scientific name for red blood cells.
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erythrocytes
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Scientific name for white blood cells.
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leukocytes
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Scientific name for platelets.
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thrombocytes
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Plasma proteins that maintain osmotic/water blance are ____.
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albumins
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Plasma proteins that defend the body against infection and that transport cholesterol are ____.
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globulins
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Plasma proteins that aid in blood clotting are ____ proteins.
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clotting
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What is the function of red blood cells?
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transport oxygen and carbon dioxide
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Describe the structure of red blood cells.
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small, flattened, biconcave disks
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How does red blood cell structure contribute to its function?
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-able to squeeze through small blood vessels
-facilitates gas exchange across cell surface |
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The protein molecule in red blood cells that carries oxygen and gives red blood cells their red color is called ____.
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hemoglobin
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Describe the structureof hemoglobin.
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made of 4 polypeptide chains-each chain contains a heme group with an iron atom at the center
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Hemoglobin picks up oxygen in the ___ and releases oxygen in body ____.
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-lungs
-tissues |
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Hemoglobin releases oxygen to body tissues and picks up carbon dioxide waste from body tissues. It is able to bind and transport both oxygen and carbon dioxide because oxygen binds with the ____ part of hemoglobin and carbon dioxide binds with the ____ part of hemoglobin.
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-heme
-globin |
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The percentage of blood consisting of red blood cells is called the ____.
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hematocrit
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The hematocrit is a measure of the ____ carrying capacity of blood. The calue in men is higher than in women, but the average is approximately ____%.
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men/43-49%
women/37-43% |
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A low hematocrit indicates ____ production and ____.
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-RBC
-anemia |
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A high hemtocrit indicates indicates increased ____ production.
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RBC
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List two reasons that the hematocrit might be high.
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-high blood pressure
-visit high altitude for a few weeks |
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List seven locations in the skeleton that contain red bone marrow and stem cells.
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-skull
-ribs -vertebrae -sternum -pelvis -humerus -femur |
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Do stem cells produce mature or immature blood cells?
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immature blood cells
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In the life cylce of red blood cells, ___ cells in red bone marrow develop into immature red blood cells called ____.
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-stem
-erythroblasts |
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Erythroblasts/immature red blood cells lose their ___ and ___ and synthesize ____ before they are released to the bloodstream as mature red blood cells called _____.
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-nuclei
-organelles -hemoglobin -erythrobocytes |
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Why don't red blood cells reproduce and perform basic cell functions?
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-wear out-live only 120 days
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Approximately two million red blood cells die or are destroyed every second. Old or damaged RBCs are destroyed by cells called ____ which engulf and digest them in a process called ____.
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-macrophages
-phagocytosis |
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The destruction of cells occures in the ___ and ____.
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-liver
-spleen |
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When RBCs are destroyed, the polypeptide chains are broken down to ____ that are recycled and used to make new ____.
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-amino acids
-proteins |
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The iron atoms are returned to the red bone marrow to produce new ___ molecules, and the heme groups are converted by the ____ to ____ which mixes with bile to aid in digestion.
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-hemoglobin
-liver -bilirubin |
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ERYTHROPOIETIN
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The hormone that regulates red blood cell production and that is produced and released by the kidneys in response to low oxygen availability.
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The accumulation of bilirubin in plasma that causes skin and mucous membranes to turn yellow is called ____. This condition is due to the liver not processing bilirubin properly.
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-jaundice
-liver |
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Synthetic erythropoietin is used medically to treat anemia, but it is also used illegally by athletes to increas ____ production and ____ carrying capacity in a process called ____.
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-RBC
-oxygen- -blood doping |
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List two functions of white blood cells.
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-protect from infection
-regulate inflammatory reactions |
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List the two types of white blood cells based on staining characteristics.
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-granulocytes
-agranulocytes |
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The only white blood cells that do not mature in the red bone marrow are _____ which mature in the ____.
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-T-lymphocytes
-thymus |
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Dead or injured white blood cells are removed by the ___ and ____.
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-liver
-spleen |
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Production of white blood is regulated by chemicals produced by white blood cells themselves in response to invasion by ___ and ____.
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-viruses
-bacteria |
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List the three types of granular leukocytes (granulocytes).
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-Neutrophils
-Eosinophils -Basophils |
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The most abundant white blood cell is the ____ which accounts for 60% of all white blood cells circulating in the blood.
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neutrophils
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LYMPHOCYTES
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the second most abundant WBC (30% of all ABCs)
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MONOCYTES
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the largest white blood cell
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NEUTROPHILS
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first to respond to infection and numbers increase in acute bacterial infections
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T-LYMPHOCYTES
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produce antibodies
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EOSINOPHILS
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defends against parasites and is involved in allergic reactions
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MONOCYTES
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differentiates into macrophages in body tissues and destroys pathogens and cell debris by phagocytosis
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LYMPHOCYTES
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found in the bloodstream, tonsils, spleen, lymph nodes, and thymus gland
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BASOPHILS
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releases histamine and initiates the inflammatory response
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T-LYMPHOCYTES
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attack and destroy foreign cells such as bacteria, viruses, fungi, parasites, cancer cells, and transplant cells
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MONOCYTES
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active during chronic infections such as tuberculosis
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What are platelets? Are they true cells?
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-small cell fragments derived from megakaryotes
-no |
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THROMBOPOIETIN
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hormone that platelet production is regulated by
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What is the function of platelets?
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involved in stoppage of bleeding
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List and describe the three steps involved in homeostasis.
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-vascular spasm/ constriction of blood vessels to reduce blood flow to the area
-formation of platelet plug/ to seal ruptured blood vessel -coagulation/formation of a blood clot |
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There are ___ clotting factors involved in coagulation or formation of a blood clot.
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12
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2 of the 12 clotting factors are ___ activator and _____.
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-prothrombin
-thrombin |
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The fibrin clot formed during coagulation is composed of insoluble _____ that traps ____ and ____ at the injury site.
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-protein threads
-platelets -blood cells |
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HEMOPHILIA A
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an inherited condition caused by a deficiency of clotting factor VIII
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ASPIRIN
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a common pain medication that interferes with formation of the platelet plug
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ANTIGEN
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a foreign protein that the body recognizes as "nonself"
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ANTIBODY
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a protein produced by lymphocytes in response to a foreign protein
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Why is carbon monoxide poisoning so deadly?
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reduces the oxygen-carrying capacity of hemoglobin
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MULTIPLE MYELOMA
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cancer of blood caused by overproduction of abnormal white blood cells in the bone marrow
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MONONUCLEOSIS
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"kissing disease" caused by Epstein-Barr virus infection of lymphocytes
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LEUKEMIA
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decreased number of platelets causing bleeding and bruising
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IRON DEFICIENCY ANEMIA
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the most common form of anemia
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SEPTICEMIA
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proliferation of microorganisms or their toxins in blood
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SICKLE CELL ANEMIA
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a genetic disorder causing abnormally-shaped RBCs and multiple body affects in people of African descent
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