lab: blood pressure

What happens during atrial systole?

Atria contract and top off ventricles with blood.

What happens during atrial diastole?

Atria relax.

What happens during ventricular systole?

Ventricles contract, AV valves close, SL valves open, blood fills aorta/pulmonary trunk.

What happens during ventricular diastole?

SL valves close, AV valves open, ventricles passively fill with blood.

What causes heart sounds?

Closure of heart valves.

What is the first heart sound (S1/Lubb)?

AV valves closing; marks start of ventricular systole.

What is the second heart sound (S2/Dupp)?

SL valves closing; marks start of ventricular diastole.

What is a stethoscope?

Instrument used to listen to internal body sounds.

What is pulse?

pressure rising and falling in an artery as the left ventricle contracts and relaxes.

What are pulse points?

Places where you can feel the pulse by pressing an artery against firm tissue

What is blood pressure?

is the force blood pushes against artery walls. It rises when the heart contracts and falls when it relaxes.

What is systolic pressure?

the pressure in the arteries when the ventricle contracts

What is diastolic pressure?

the pressure in the arteries when the ventricle relaxes.

What is a sphygmomanometer?

Instrument used to measure blood pressure.

What are the Sounds of Korotkoff?

sounds heard during BP measurement when blood flow returns (systolic) and when the sound disappears (diastolic).

What is pulse pressure?

Difference between systolic and diastolic pressure.

What is mean arterial pressure?

Average blood pressure; diastolic pressure + 1/3 of pulse pressure.