questions 17- 25 Flashcards
on an electrocardiogram, what does P mean?
Atria Depolazation
in an electrocardiogram, what does QRS mean?
ventricles depolarization
in an electrocardiogram, what does T mean
Ventricles re-polarization
what’s bradycardia?
slow heart rate
rate below 60beats/min
what’s trachycardia?
fast heart rate
over 100 beats/min
what is ventricular fibrillation?
rapid heart contractions in ventricles causing random rhythms.
what’s an AV block?
when electric signal that get sent to your heart is blocked
what is is the layer “tunica intima” made of?
simple squamous
what’s artheroscelerosis?
a disease process in which the body’s blood vessels become increasingly blocked by plaques
what’s an aneurysm?
when a balloon like tissue forms within the artery
why is atherosclerosis and aneurysm similar?
they both are disorders that increases the thickness of the arteries
how does skeletal muscle pump and venous valves return blood to the heart?
skeletal muscles contract increasing pressure in veins forcing valves to open and direct blood forward to heart
what’s varicose vein?
enlarged veins which can result to damaged valves and blood back flow
whats blood pressure?
pressure exerted by blood on vessel walls
what’s hypertension?
when force of blood against artery wall is to high
