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A&P II lab exam 1

It includes ECG, platelets, WBC, RBC, heart anat and phys, arteries and veins

TermDefinition
P wave represents atrial depolarization
PR interval represents a slight delay in the transmission of the impulse from the AV node to the ventricles
QRS complex represents ventricular depolarization
ST segment represents time between ventricular depolarization and repolarization
T wave represents ventricular repolarization
QT interval represents ventricular systole
pulmonary trunk carries blood from the right ventricle and divides into the left and right pulmonary arteries
left and right pulmonary arteries carry blood to the lungs to be oxygenated
pulmonary veins empty newly oxygenated blood into the right atrium
ascending aorta departs the heart
aortic arch three major branches stem off
brachiocephalic artery short artery will quickly branch into the right common carotid artery and the right subclavian artery
common carotid artery leads up through the right and left sides of the neck
subclavian artery third branch off of the aortic arch (left) and branches off of brachiocephalic (right); passes through the shoulders
axillary artery passes through axillary region
brachial artery branches form axillary
ulnar artery inside arm, branches from brachial
radial artery outside arm, branches from brachial
descending thoracic aorta runs along dorsal wall of the cavity, just left of spinal column
descending abdominal aorta passes through the diaphragm and enters the abdominal vacity where it travels along the posterior wall of the cavity, resting on the anterior surface of the spinal column
celiac trunk supplies the stomach, spleen, pancreas, and liver; left gastric artery, splenic artery, and common hepatic artery branch off
superior mesenteric artery supplies the small and large intestine. attaches to the aorta superior to, but very close to the left renal artery
inferior mesenteric artery supplies the distal portion of the large intestine
renal arteries paired; one of the renal arteries departs the descending aorta before the other
gonadal arteries depart the aorta between the renal arteries and the inferior mesenteric artery
common iliac arteries divides into an internal and an external iliac artery then they branch into the femoral artery
common iliac veins divides into an internal and an external iliac vein then into the femoral vein
inferior vena cava travels to the right of the aorta, along the back the abdominal cavity to where it passes through the diaphragm behind the liver
renal veins drain directly into the inferior vena cava
right gonadal vein connects directly to the inferior vena cava
left gonadal vein drains into the left renal vein
hepatic portal blood flow blood from the stomach, liver, spleen and pancreas, small intestine and large intestine passes through a second capillary bed
inferior mesenteric vein drains into the splenic vein
splenic vein drains with the gastic vein into the superior mesenteric cein to form the hepatic portal vein
brachial, ulnar, and radial veins there are two brachial veins that break off into two ulnar veins and two radial veins
neutrophils phagocytize bacteria
eosinophils phagocytize allergens and antigen-antiboody complexes, combat parasites
basophils release histamine and heparin
monocytes phagocytize pathogens, dead cells and debris; become macrophages
lymphocytes destroy virus-infected cells and cancer cells, coordinate immune system, secrete antibodies
coagulation clotting cascade
platelet plug adhesion of platelets to the damaged vessel wall or exposed connective tissue, and aggregation to each other, creating the physical plug
vascular spasm immediate local contraction of the smooth muscle of injured vessel to decrease its diameter
SA node normal paccemaker of the heart, initiates each electrical and contractile cycle
AV node sends electrical signal through the ventricle walls via the AV bundle, bundle branches and purkinje fibers
hematocrit measures the proportion of the blood volume comprised of erythrocytes
megakaryocytes large bone marrow cell that contains storage granules of numerous chemicals including factors that activate coagulation
Created by: tb1285