Terrasil Eczema-Psoriasis System

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Human Anatomy – The thorax – The thoracic wall II

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...
Filed in: Anatomy, The Thorax

Human Anatomy – The thorax – The thoracic wall I

The thoracic cage The thoracic cage is formed by the sternum and costal cartilages in front, the vertebral column behind and the ribs and intercostal spaces laterally. It is separated from the abdominal cavity by the diaphragm and communicates superiorly with the root of the neck through the thoracic inlet (Fig. 1.1). The ribs (Fig. 1.1) Of the 12 pairs of ribs the first seven articulate with the vertebrae posteriorly and with the sternum anteriorly by way of the costal cartilages (true ribs). The cartilages of the 8th, 9th and 10th ribs articulate with the cartilages of the ribs above...
Filed in: Anatomy, The Thorax
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