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cardio exam natalie yracheta - Coggle Diagram
cardio exam natalie yracheta
Major components and functions of Blood
blood functions
transportation
protection
regulation
plasma
buffy coat
erythocytes
45% of blood
most dense
<1% of blood
leukocytes and platelets
55% of blood
least dense
ABO, Rh blood types
A
anti-B plasma antibodies
A antigen in RBC
B
anti-A plasma antibodies
B antigen in RBC
AB
no antibodies
A&B antigen in RBC
O
anti-A&B plasma antibodies
no antigen in RBC
Major functions of the cardiovascular system
blood pressure regulation
blood circulation
Anatomy of the heart
interventricular sulcus: lines outside atrium
interventricular septum: separates chambers
if heart anterior IV is diagonal
if heart posterior IV is vertical
Layers of the heart
epicardium
apart of serous pericardium
pericardium
surrounds heart
parietal: lines internal
serous:lines external
myocardium
bundles of cardiac muscle
endocardium
deepest layer
lines heart chambers
Blood flow through the heart and body
deoxygenated blood from the body goes to
superior & inferior vena cava
right atrium
tricuspid valve
right ventricle
pulmonary semilunar valve
pulmonary trunk & artery
becomes oxygenated through
1 more item...
Structural and functional differences between blood vessel types
arteries carry blood away from heart
veins carry blood to heart
both veins and arteries have 3 layers/tunics
tunica intima
tunica media
tunica externa
Cardiac cycle and the ECG
major features of ECG
P wave: depolarization of SA node and atria
QRS complex: ventricular depolarization & atrial repolarization
T wave: ventricular repolarization
P-R interval: beginning of atrial excitation to ventricular excitation
S-T segment: all of ventricular myocardium depolarizes
Q-T segment: beginning of ventricular depolarization to repolarization
sequence cycle
sinoatrial node
atrioventricular node
atrioventricular bundle
bundle branches
purkinje fibers
Major blood vessels
arteries
capillaries
veins
Vital signs
systolic pressure
usually less than 120 mmHg
pressure exerted in aorta
diastolic pressure
heart is at rest
usually less than 80 mmHg
Disorders of the cardiovascular system
anemia
blood loss
iron deficiency
too many RBCs destroyed
leukemia
overproduction of abnormal WBCS
infectious mononucleosis
"kissing disease"