Worksheet: Heart and Ventricular

Interactive Physiology Worksheet:
Cardiovascular System: Cardiac Cycle
differences of blood pressure
1. Valves open in response to ______________________________________ on their two sides.

2. List the chambers/vessels that the four valves connect:
Right ventricle
Left ventricle

Pulmonary semilunar
Aortic semilunar

Pulmonary trunk

Left atrium


Left ventricle

Right atrium


Right ventricle

mid to late
3. a. Ventricular filling occurs during ________________________ ventricular
________________. av valves
b. Blood flows through the ____________________, or __________, valves into the ventricles.

4. During ventricular systole, what closes the AV valves?
interventricular pressure is greater then atrial pressure

5. During ventricular systole, what opens the semilunar valves? interventricular pressure is greater than pressure in pulmonary trunk and aorta _____________________________________________________________________________


During isovolumetric relaxation, what closes the semilunar valves? _____________________________________________________________________________ blood flow back toward the heart due to aortic pressure being greater than interventriuclar pressure

7. During isovolumetric relaxation, what opens the AV valves? atrial pressure is greater than interventricular pressure

8. Why is hypertension hard on the heart?
ventricular pressure must rise higher to open the semilunar valves; the same increase in a normal BP, less _______________________________________________________________________________

blood is ejected in a hypertensive case so the heart with hypertension must work harder to eject the same ______________________________________________________________________ SV


9. Looking at the Ventricular Volume graph, the stroke volume is approximately how many ml? 70


During the four phases listed below, state whether the AV and semilunar valves are open or


AV Valves

Semilunar Valves

Ventricular filling



Isovolumetric contraction



Ventricular ejection



Isovolumetric relaxation



Receives deoxygenated blood returning to the heart from the vena cava and pumps it to the right ventricle. Left atrium: Receives oxygenated blood returning to the heart from the pulmonary veins and pumps it to the left ventricle. Ventricles thicker …

1. An anterior view of the heart is shown here. Match each structure listed on the left with the correct letter in the figure. right atrium right ventricle left atrium left ventricle superior vena cava inferior vena cava ascending aorta …

Purpose: Sheep have a four-chambered heart, just like humans. By studying the anatomy of a sheep’s heart, you can learn about how your own heart pumps blood through your body and keeps you alive!. Procedure Observation: External Anatomy Most heart …

The Human heart has many complicated processes. Dissecting a sheep’s heart can help to provide an active, firsthand learning experience that allows to illustrate what has been previously heard and read. The sheep heart and a human heart share the …

David from Healtheappointments:

Hi there, would you like to get such a paper? How about receiving a customized one? Check it out