A thin dome-shaped skeletal muscle that separates the thoracic and abdominal cavities. The diaphragm plays an important role in breathing: it contracts with each inspiration, becoming flattened downward and increasing the volume of the thoracic cavity so that air is drawn into the respiratory tract, and then, with expiration, it relaxes and is restored to its dome shape….

List of Biology Words Starting with D

d-loop Dalton daltons law of partial pressures dark adaptation Darwinian fitness data dauerblastula dauermodification daughter cells daughter DNA daughter molecules de- deamination Death phase deca- deciduous decomposer decussation dedicated circuit deficiency deforestation degenerate code degenerative disease degradation degree degrees of freedom Deionized Water delamination deletion deletion chromosome deme demen…