Question

c. the heart and pulmonary circulation
place the following structures in order, tracing the blood flow from the superior vena cava to the heart, to the pulmonary
circulation, and out of the heart to the systemic circulation. start with superior vena cava as number 1.

• aorta
• aortic valve
• bicuspid valve
• left atrium
• left ventricle
• pulmonary capillaries
• right atrium
• right ventricle
• pulmonary arteries
• pulmonary trunk
• pulmonary valve
• pulmonary veins
• superior vena cava
• tricuspid valve

1.__________________________
2.__________________________
3.__________________________
4.__________________________
5.__________________________
6.__________________________
7.__________________________
8.__________________________
9.__________________________
10.__________________________
11.__________________________
12.__________________________
13.__________________________
14.__________________________

Explanation:

Blood flow starts at the superior vena cava (1). It then goes to the right atrium (2), through the tricuspid valve (3) to the right ventricle (4). From the right ventricle, blood passes through the pulmonary valve (5) into the pulmonary trunk (6), then to the pulmonary arteries (7). In the lungs, it goes through pulmonary capillaries (8). Oxygenated blood returns via pulmonary veins (9) to the left atrium (10). Through the bicuspid valve (11) to the left ventricle (12), then through the aortic valve (13) into the aorta (14) for systemic circulation.

Answer:

1. superior vena cava
2. right atrium
3. tricuspid valve
4. right ventricle
5. pulmonary valve
6. pulmonary trunk
7. pulmonary arteries
8. pulmonary capillaries
9. pulmonary veins
10. left atrium
11. bicuspid valve
12. left ventricle
13. aortic valve
14. aorta