Cardiac Cycle
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
Cardiac Cycle | SYSTOLE - contraction. blood out of chamber.
DIASTOLE -Relaxation, Blood into chamber.
🗑
|
||||
Events in Left Side of Heart | Atria + ventricles relaxed. Blood enters heart passively from veins due to BP. Flows thru atria into ventricles.
🗑
|
||||
Events in Left Side of Heart II | AV valves open/ semilunar closed. 70 % of ventricular filling occurs. Venous pressure= atrial pressue = ventricular pressure (atrial + ventricular diastole)
🗑
|
||||
Events in Left Side of Heart III | -atria relax. ventricles contract. blood in ventricles compressed > AV forced shut.
-pressure still not sufficient to open semilunar valvees. vent contracting = no blood leaving, isometric contraction phase.
🗑
|
||||
Events in Left Side of Heart IV | -atria in diastole. ventricles systole. - vent pressure increases suffiently to exceed aortic pressure and semilunar valves open -> blood enters aorta (swells + atrial pressure increases) = ventricular ejecction phase
🗑
|
||||
Events in Left Side of Heart V | ventricles relax. pressure decreases in ventricle. blood flow backwards from aorta + pulmonary arteries. closes semilunar valves. brief increase in aortic pressure (dictrotic notch)
🗑
|
||||
Events in Left Side of Heart VI | ventricles relax. longer for pressure to fall in ventricles. AV valves closed. ISOMETRIC RELAXATION PHASE.
Atria + vent = diastole.
vent systole-> atria slowly filling w/blood
vent/atria P increase slightly
🗑
|
||||
Events in Left Side of Heart VII | Ventricular pressure falls below level. all valves open and ventricle begins filling again. atria pressure decreases slightly and vent pressure increases when chambers fill with blood
🗑
|
||||
Heart Sounds - LUB | LUB= reverse blood flow due to closure of the AV valves, at the beginning of vent contraction, or systole. When the pressure in the vent rises above the pressure in the atria, venous blood flow entering the vent is pushed back toward the atria
🗑
|
||||
Heart Sounds - DUB | Results from closure of aortic and pulmonary semilunar valves at beginning of ventricular diastole, lasts longer
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
zeenat
Popular Physiology sets