Examlex
Which of the following bonds is the weakest?
Alveoli
Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
Muscular Contractions
The process by which muscle fibers produce tension or force by converting chemical energy into mechanical energy.
Internal Chest Wall
The inside layer of the chest wall, consisting of ribs, muscles, and connective tissue, which supports and protects thoracic organs.
Pulmonary Artery
Blood vessel that transports oxygen-poor blood from the heart to the lungs.
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