Question

read each item carefully and then select the one best response. 1. a blood clot lodged in the pulmonary artery is referred to as a: a. myocardial infarction b. stroke c. pulmonary embolism d. pulmonary effusion 2. the oxygen - carbon dioxide exchange takes place in the: a. trachea b. bronchial tree c. alveoli d. blood

Explanation:

1. A pulmonary embolism is a blood - clot that lodges in the pulmonary artery. A myocardial infarction is a heart attack, a stroke is related to blood vessels in the brain, and pulmonary effusion is fluid accumulation in the lungs.
2. The alveoli are the tiny air - sacs in the lungs where the oxygen - carbon dioxide exchange occurs. The trachea is the windpipe, the bronchial tree is the branching structure of airways, and while blood is involved in transporting gases, the exchange occurs in the alveoli.

Answer:

1. C. pulmonary embolism
2. C. alveoli