Cardiac Cycle
This phase completes ventricular filling and starts off when the p wave appears on the EKG.
atrial systole
This force is caused by proteins in the blood.
Blood colloid osmotic pressure
right atrium, tricuspid, right ventricle, pulmonary, pulmonary trunk
Chamber of the heart that receives blood from the lungs and sends it to the left ventricle.
left atrium
During this phase all of the valves are closed and the ventricles are contracting.
Isovolumetric contraction
This forces is caused by the fluid pressure in the tissues.
Tissue hydrostatic pressure
What does the p wave of an EKG represent?
the signal for the atria to depolarize and contract
_______ is caused by increase stretch of the heart caused by increased venous return and will ________ stroke volume.
preload, increase
During this phase the stroke volume (SV) is pumped out.
Ventricular ejection
Movement out of the blood is ____________ and movement into the blood is _____________.
filtration
reabsorption
What type of respiration do cardiac cells utilize?
aerobic
_________ is the force the ventricles are working against and will __________ stroke volume.
afterload, decrease
The QRS complex appears leading into this phase. Rising pressure in the ventricles closes the AV valves, but the semilunar valves are still closed. The ventricles contract, building pressure.
Ventricular isovolumetric contraction
These forces cause filtration.
Blood hydrostatic pressure and tissue colloid osmotic pressure
What carries the signal to contract down the interventricular septum?
The bundle of His
The QRS complex of an EKG represents
the signal for the ventricles to depolarize and contract
The T wave appears leading into this phase. The ventricles relax causing pressure to drop, closing semilunar valves. AV valves are also closed. Ventricles continue to relax.
Ventricular isovolumetric relaxation
These forces cause reabsorption
Blood colloid osmotic pressure
Tissue hydrostatic pressure
A positive chronotropic agent will:
increase heart rate
The lymphatic system gathers up fluid and sends it through a series of ____________.
lymph nodes