Read and translate the following words and word combinations
1. Chamber: the heart consists of two separate chambers; the right atrium and the right ventricle are in the right chamber;
2. thick: a thick wall; the walls of the left atrium are thick; the left ventricle has thick walls;
3. pulmonary: pulmonary artery; pulmonary circulation; pulmonary function; pulmonary valve;
4. to dilate: dilated; to be dilated; the vessels dilate; the heart dilates and contracts