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Diaphragm
Other Terms:
Thoracic diaphragm,
Diaphragma,
Diaphragme
Muscle parts
Lumbar part - right crus; Lumbar part - left crus; Costal part; Sternal part
Latin name
Diaphragma
Latin muscle parts
Pars lumbalis diaphragmatis - crus dextrum; Pars lumbalis diaphragmatis - crus sinsitrum; Pars costalis diaphragmatis; Pars sternalis diaphragmatis
Group
Thoracic wall – lateral musculature – internal layer
Etymology
In English, this muscle’s name is the muscle that encloses across. The word diaphragm comes from the Greek prefix dia meaning “across, or through” and the Greek phragmos meaning “a hedge or fence,” which is related to the verb phrassein meaning “to enclose.”
Origin
Inner surface of the xiphoid process, costal cartilages, ribs, and lumbar vertebrae
Insertion
Central tendon of the diaphragm
Action
Increases the volume of the thoracic cavity in inspiration.
Nerve supply
Phrenic nerve (C3, C4, and C5)
Blood supply
Superior phrenic artery, inferior phrenic artery, musculophrenic artery, pericardiacophrenic artery
Latin
Diaphragma
French
Diaphragme
