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75 Cards in this Set

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