Everything Contractions
Isovolumetric contraction happens during
systole
The P wave signals
signals that comes from the atria contracting
ECG's are used to indicate
Heart disorders, Myocardial infarction, abnormalities in conduction pathways, heart enlargement, and electrolyte and hormonal imbalances.
The first sound (S1) is known as...
Flow through the coronary arteries is greatest when
When the heart relaxes
Systole means
contraction
Diastole means
Relaxation
This disorder is known for causing a fast heartbeat
tachycardia
This sound is known for being softer and sharper.
S2
This is needed in order for fluid to flow
a pressure gradient
When this ion enters into the cell the muscle contracts
Calcium
When does ventricular ejection happens
ventricular pressure exceeds arterial pressure and semilunar (aortic, pulmonary) valves open
This disorder is caused by a failure of any part of the cardiac conduction signals.
Heart Block
This heart sound is usually heard as a gallop
S3
When the ventrical contracts this rises
pressure
This process is used in order to help the heart be fatigue resistant and allows it to contract for a life time.
Anaerobic respiration
During this stage ventricular filling begins again
when the AV valves open
Ventricular fibrillation
When this sound is heard in older people it can be indicative of a dying heart or a heart murmmer.
S3
blood flows into the left ventricle
This part of the ECG shows cardiac contraction
QRS segment
When people say they feel like their heart skipped a beat what do they actually feel
extra firing in the ventricles
This disorder is can appear with a ventricular ectopic focus with an extra eat, may come from stress, lack of sleep, or stimulants
Premature ventricular contraction
This sound occurs after blood from the pulmonary trunk and aorta flows back and fills the cusps, which closes the semilunar valves
The semilunar valves are under pressure from what when the ventricles relax
blood in the vessels