-
P wave
atrial depolarization
-
QRS wave
ventricular depolarization
-
T wave
ventricular repolarization
-
arteries carry blood _______ ________ the heart
away from
-
-
atreries are
more muscular and elastic then other blood vessels
-
smallest branch of arteries are...
arterioles (which join with capillaries)
-
capillaries
connect arterioles with venules
-
veins carry blood ________ _______ the heart
back to
-
largest veins are the...
inferior and superion vena cava
-
veins are...
thinner then arteries and have less muscle tissue
-
veins have...
valves that keep blood from flowing back
-
what are the components of blood
erythrocytes, thrombocytes, leukocytes, plasma
-
components of plasma
proteins, fibrinogen, prothrombin, neutrients, electrolights, oxygen, carbon dioxide, metabolic waste products, hormones, enzymes
-
erythrocytes do what?
regulate oxygen and carbon dioxide through out the body
-
leukocytes do what?
fight infection
-
thrombocytes do what?
clotting
-
normal cell count of erythrocytes
4.5-5.5 million per cubic mm
-
normal cell count of leukocytes
5,000-10,000 per cubic mm
-
normal cell count of thrombocytes
250,000-400,000 per cubic mm
-
neutophils
engulf, ingest, and destroy bacteria
-
eosinphils
defend the body from allergic reaction by producing antihistamines
-
basophils
participate in the inflammatory response, produce histamine and heparin
-
monocytes
phagocytize bacteria and foreign material (later response)
-
lymphocytes
provide immunity for the body by developing antibodies
-
iron deficiency anemia
an anemia that results when there is an inadequate amount of iron to form hemoglobin in red blood cells
-
sickle cell anemia
a chronic, inherited anemia that results in the production of abnormal; crescent- shaped RBC's that carry less oxygen, break easily, and block blood vessels.
-
aneurysm
ballooning of an artery wall
-
arteriosclerosis
a hardening or thickening of the arterial walls, resulting in loss of elasticity and contractility
-
atherosclerosis
a condition that occurs when fatty plaques are deposited on the wall of arteries. This narrows the arterial opening, which reduces or eliminates blood flow
-
congestive heart failure
a condition that occurs when the heart muscles don't beat adequately to supply the blood needs of the body. May involve either the right or left side of the heart
-
hemophilia
an inherited disease in which the blood does not clot (caused by the lack of a plasma protein required for the clotting process)
-
hypertension
high blood pressure (usually greater than 140/90)
-
leukemia
a disease of the bone marrow or lymph tissue that results in a high number of immature white blood cells
-
myocardial infarction (heart attack)
occurs when a blockage in the coronary arteries cuts off the supply of blood to the heart. the affected tissue dies
-
thrombophlebitis
blood clot
-
varicose veins
dilated, swollen veins that have lost elasticity and cause stasis (decreased blood flow)
-
P wave
atrial depolarization
-
QRS wave
ventricular depolarization
-
T wave
ventricular repolarization
|
|