HOSA EMT Exam Questions and
Answers 100% Solved
atrium - Each of the two upper chambers of the heart that receives
blood that comes into the heart
ventricles -
Aorta - The large arterial trunk that carries blood from the heart to be
distributed by branch arteries through the body.
main func...
nervous system that responds to stressful situations by initiating the fight-
or-flight response. Affects both the atria and the ventricles by increasing
heart rate. conduction, and irritability.
Myocardium - ✔✔thick middle muscle layer of the heart; pumps blood
through the circulatory system
stroke volume - ✔✔The amount of blood ejected from the heart in one
contraction.
dilation - ✔✔widening, stretching, expanding
coronary arteries - ✔✔blood vessels that branch from the aorta and carry
oxygen-rich blood to the heart muscle
aortic valve - ✔✔The semilunar valve separating the aorta from the left
ventricle that prevents blood from flowing back into the left ventricle.
cardiac output - ✔✔The volume of blood ejected from the left side of the
heart in one minute. (heart rate x stroke volume)
signs and symptoms of cardiogenic shock - ✔✔Hypotension, pulmonary
edema, possible past cardiac, ALOC. chest pain
irregular weak pulse/low BP
cyanosis
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