| innermost intercostal muscle | <anatomy> A layer parallel to and essentially part of the internal intercostal muscle but separated from it by the intercostal vessels and nerves.internal intercostal muscle for attachment, action and nerve supply. Synonym: musculus intercostalis intimus. (05 Mar 2000) |
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| intercostal | <anatomy> Situated between the ribs. Origin: L. Costa = rib (18 Nov 1997) |
| intercostal anaesthesia | Regional anaesthesia produced by injection of local anaesthetic solution about intercostal nerves. (05 Mar 2000) |
| intercostal arteries | Arteries which course in the thoracic wall between ribs. See: anterior intercostal arteries, posterior intercostal arteries 1-2, posterior intercostal arteries 3-11, superior intercostal artery. (05 Mar 2000) |
| intercostal ligaments | The membranous layers between ribs. Synonym: membranae intercostalia, intercostal ligaments, ligamenta intercostalia. (05 Mar 2000) |
| intercostal membranes | The membranous layers between ribs. Synonym: membranae intercostalia, intercostal ligaments, ligamenta intercostalia. (05 Mar 2000) |
| intercostal muscle | <anatomy> Muscle tissue between two ribs. This muscle is a type called skeletal muscle. (12 Dec 1998) |
| intercostal muscles | Respiratory muscles that arise from the lower border of one rib and insert into the upper border of the adjoining rib, and contract during inspiration or respiration. (12 Dec 1998) |
| intercostal nerves | The ventral rami of the thoracic nerves from segments t1 through t11. The intercostal nerves supply motor and sensory innervation to the thorax and abdomen. The skin and muscles supplied by a given pair are called, respectively, a dermatome and a myotome. (12 Dec 1998) |
| intercostal neuralgia | Pain in the chest wall due to neuralgia of one or more of the intercostal nerves. (05 Mar 2000) |
| intercostal space | An interval between the ribs, occupied by intercostal muscles, veins, arteries and nerves. Synonym: spatium intercostale. (05 Mar 2000) |
| intercostal veins | See: anterior intercostal veins, posterior intercostal veins, highest intercostal vein, left superior intercostal vein. (05 Mar 2000) |
| internal intercostal membrane | The membrane that replaces the internal intercostal muscle posteriorly, medial to the angles of the ribs. Synonym: membrana intercostalis interna. (05 Mar 2000) |
| internal intercostal muscle | <anatomy> Each arises from lower border of rib and passes obliquely downward and backward to be inserted into upper border of rib below; action, contract during expiration, also maintain tension in the intercostal spaces to resist mediolateral movement; nerve supply, intercostal. Synonym: musculus intercostalis internus. (05 Mar 2000) |
| external intercostal membrane | The membrane that replaces the external intercostal muscle anteriorly between costal cartilages. Synonym: membrana intercostalis externa. (05 Mar 2000) |