Questions: Match the terms associated with heart structure with their correct descriptions. (Click to select) Structure from which chordae tendineae originate (Click to select) Prevents blood movement from right ventricle to right atrium (Click to select) Membranes around heart (Click to select) Prevents blood movement from left ventricle to left atrium (Click to select) Gives rise to left and right pulmonary arteries (Click to select) Drains blood from myocardium into right atrium (Click to select) Inner lining of heart chamber (Click to select) Layer largely composed of cardiac muscle tissue (Click to select) Space containing serous fluid to reduce friction during heartbeats (Click to select) Drains blood from myocardial capillaries (Click to select) Supplies blood to heart muscle (Click to select) Distributes blood to body organs (systemic circuit) except lungs

To match the terms associated with heart structure with their correct descriptions, let's go through each description and identify the corresponding heart structure:

1. Structure from which chordae tendineae originate: The chordae tendineae originate from the papillary muscles. These muscles are located in the ventricles of the heart and attach to the cusps of the atrioventricular valves via the chordae tendineae.

2. Prevents blood movement from right ventricle to right atrium: This is the function of the tricuspid valve. It is located between the right atrium and right ventricle and prevents backflow of blood into the atrium when the ventricle contracts.

3. Membranes around heart: The membranes around the heart are known as the pericardium. The pericardium is a double-walled sac containing the heart and the roots of the great vessels.

4. Prevents blood movement from left ventricle to left atrium: This is the function of the mitral valve (also known as the bicuspid valve). It is located between the left atrium and left ventricle.

5. Gives rise to left and right pulmonary arteries: The pulmonary trunk gives rise to the left and right pulmonary arteries, which carry deoxygenated blood from the right ventricle to the lungs.

6. Drains blood from myocardium into right atrium: The coronary sinus is responsible for draining deoxygenated blood from the myocardium into the right atrium.

7. Inner lining of heart chamber: The inner lining of the heart chambers is called the endocardium.

8. Layer largely composed of cardiac muscle tissue: This is the myocardium, which is the thick middle layer of the heart wall composed of cardiac muscle tissue.

9. Space containing serous fluid to reduce friction during heartbeats: This space is the pericardial cavity, which contains serous fluid to reduce friction between the heart and pericardium during heartbeats.

10. Drains blood from myocardial capillaries: The cardiac veins drain blood from the myocardial capillaries into the coronary sinus.

11. Supplies blood to heart muscle: The coronary arteries supply oxygenated blood to the heart muscle.

12. Distributes blood to body organs (systemic circuit) except lungs: The aorta is the main artery that distributes oxygenated blood to the systemic circuit, supplying the body organs except the lungs.

In summary, the terms and their corresponding descriptions are matched as follows:

1. Papillary muscles
2. Tricuspid valve
3. Pericardium
4. Mitral valve
5. Pulmonary trunk
6. Coronary sinus
7. Endocardium
8. Myocardium
9. Pericardial cavity
10. Cardiac veins
11. Coronary arteries
12. Aorta