PRE-LAB Activity 3: Tracing Blood Flow-Pulmonary Circulation 1. The pulmonary ci

Question

PRE-LAB Activity 3: Tracing Blood Flow-Pulmonary Circulation 1. The pulmonary circuit begins in the of the heart, transports deoxygenated of the heart blood to the , and ends in the 2. State whether each of the following statements is true (T) or false (F): a. The pulmonary trunk splits to form the right and left pulmonary arteries. b. The pulmonary veins contain oxygenated blood. c. Gas exchange occurs in the capillary beds of the lungs. d. The right pulmonary artery splits into two lobar arteries. PRE-LAB Activity 4: Tracing Blood Flow-Fetal Circulation 1. The opening in the fetal heart between the right atrium and the left atrium that allows blood to pass from the pulmonary circuit to the systemic circuit is the 2. The ductus arteriosus is a fetal structure that shunts blood from the pulmonary trunk to the

Explanation / Answer

1. The pulmonary circuit begins right ventricles of the heart ,transports deoxygenated blood to the lungs . And ends in the left atrium of the heart.

2. A. The pulmonary trunk splits into two pulmonary arteries. True.

B. The pulmonary veins contain oxygenated blood . True.

C. Gas exchange occurs in thecapillary bed of the lungs. True.

It contains endothelium of alveoli,capillary membrane and basement memnrane between these two.

D. The right pulmonary artery splits into two lobar artery. True.

4. 1

The opening in the fetal heart netween the right and the left atrium that allow blood to pass from pulmonary tk systemic circulation is the FORAMAN OVALE.

2. the ductuc arteriosus that allow blood to pass from the pulmonary trunk to descending aorta.

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