The intercostal space Typically, each space contains three muscles comparable to those of the abdominal wall. These include the: • External intercostal: this muscle fills the intercostal space from the vertebra posteriorly to the costochondral junction anteriorly where it becomes the thin anterior intercostal membrane. The fibres run downwards and forwards from rib above to rib below. • Internal intercostal: this muscle fills the intercostal space from the sternum anteriorly to the angles of the ribs posteriorly where it becomes the posterior intercostal membrane which reaches as far back as the vertebral bodies. The fibres run downwards and backwards.
Posted on: Wed, 11 Sep 2013 16:05:12 +0000
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