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Circulatory Test

to help you study

Endocardium Definition: Is a smooth layer of cells that lines the inside of the heart and is continuous with the inside of blood vessels. Function: Allows for smooth blood flow.
Pericardium Definition: Is a double layered membrane, or sac, that covers the outside of the heart. Function: Lubricating fluid that that prevents friction and damage to the membrane as the heart beats or contracts
Myocardium Definition: The thickest and most muscular layer, in the middle.
Diastole Definition: The brief period of rest during the heart beat cycle
Systole Definition: a ventricular contraction during the heart beat cycle
Arterioles The smallest branches of arteries that join with capillaries.
Veins are blood vessels that carry blood bact to the heart. carries deoxygenated blood ( except for the pulminary veins)
Arteries carry blood away from the heart. carries oxygenated blood except in the pulminary artery
capillaries connect arterioles venules ( small branches of veins) they have thin walls that allow oxygen and nutrients to enter the cells, and carbon dioxide and metabolic processes to enter the capillaries
plasma what blood is made up of, 90% water, with several dissolved, or suspended, substances. contains blood proteins/nutrients
Hemoglobin complex protein composed of the protein molecule called globin and the iron compound heme. it carries both oxygen and CO2
Aorta the main artery of the body that supplies oxygen to the brain, arms, torso, and legs, supplies oxygenated blood
Erythrocytes red blood cells, produced in the red bone marrow. main function is to carry oxygen and contains hemoglobnin
Thrombocytes pieces of cells that lack nuclei, formed in the bone marrow. they are important beacause they help clot, which helps stop excessive bleeding. they collect at the cut and form a sticky plug and release seratonin (scab)
Leukoctes WBC that are formed in the bone marrow, and lymph tissue. usually last 3-9 days. their main function is to prevent and fight infection
Hemophilia hereditary blood disorder where the body doesnt have enough von willebrand protein that helps with clotting, therefore blood does not clot causing excessive bleeding
aneurysm a sac like formation on an artery wall that is filled with blood, if it ruptures it can cause death, it is caused by disease defects and injuries
leukemia a malignant disease of the bone marrow or lymph tissue. it results in the in a high number of immature white blood cells.
phlebotomist is an integral member of the medical laboratory team whose primary function is the collection of blood samples from patients by venipuncture or microtechniques
cardiologist deals with disorders of the heart. specialize in diagnosing and treating diseases that relate to the cardiovascular system
hematologist someone who studies blood, treats disease of blood, bone marrow and lymphatic system. they deal with anemia, clotting, ect.
electrocardiogram a record of electrical activity in the heart, is used to diagnose disturbances of conduction, myocardial infarction,metabloic disorder, ect.
# of cells in cubic ml of blood 4.5- 5.5 million : erythrocytes 5,000-9,000: luekocytes thrombocytes: 250,000-400,000
blood type giving A,B, AB, O.
conductive pathway sinoatrial node, atrialventicular nodes, bundle of his, right/ left branch, and purkinjie fibers
amount of blood in the body adult: 4-6 qt
red color of blood is oxygenated blood
Created by: danielleh13