题目内容

The dome-shaped muscle under the lungs is the ________.

A. palate
B. diaphragm
C. hiatus
D. esophagus

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The membrane around the lungs is the ________.

A. peritoneum
B. mucosa
C. pleura
D. mediastinum

The gas that is supplied to tissues by the respiratory system is ________.

A. oxygen
B. neon
C. sulfur
D. carbon dioxide

The gas that is eliminated by the respiratory system is ________.

A. chlorine
B. carbon dioxide
C. hydrogen
D. fluoride

The turbinate bones contain receptors for the sense of ____.