| 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) |
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| 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) |
| external intercostal muscles | Each arises from lower border of one rib and pass obliquely downward and forward to be inserted into the upper border of rib below; action, contract during inspiration, also maintain tension in the intercostal spaces to resist mediolateral movement; nerve supply, intercostal. Synonym: musculus intercostales externi. (05 Mar 2000) |
| lateral cutaneous branches of intercostal nerves | Branches arising in approximately the anterior axillary line at the level of the second through sixth intercostal spaces. Synonym: rami mammarii laterales nervorum intercostalium, lateral cutaneous branches of intercostal nerves. (05 Mar 2000) |
| lateral mammary branches of lateral cutaneous branches of intercostal nerves | Branches arising from the lateral cutaneous branches of the ventral primary rami of spinal nerves (intercostal nerves) T-3 to T-6 which run anteriorly to supply the lateral aspect of the breast. Synonym: rami mammarii laterales rami cutanei lateralis nervorum thoracicorum, rami mammarii laterales rami cutanei lateralis nervorum intercostalium, lateral mammary branches of lateral cutaneous branches of intercostal nerves. (05 Mar 2000) |
| left superior intercostal vein | <anatomy, vein> The vein formed by the union of the left second, third, and fourth intercostal veins; it passes forward across the arch of the aorta to empty into the left brachiocephalic vein and frequently communicates also with the accessory hemiazygos vein. Synonym: vena intercostalis superior sinistra. (05 Mar 2000) |
| acupuncture anaesthesia | Insertion of acupuncture needles at specific points in the body to block the afferent nerve impulses from reaching the brain, thus producing the loss of sensation of pain. The technique is used in performing surgery. (12 Dec 1998) |
| ambulatory anaesthesia | Anaesthesia provided on an outpatient basis. (05 Mar 2000) |
| anaesthesia | <anaesthetics, neurology> The loss of feeling or sensation. Although the term is used for loss of tactile sensibility or of any of the other senses, it is applied especially to loss of the sensation of pain, as it is induced to permit performance of surgery or other painful procedures. Origin: Gr. Aisthesis = sensation (13 Nov 1997) |
| anaesthesia adjuvants | Agents that are administered in association with anaesthetics to increase effectiveness, improve delivery, or decrease required dosage. (12 Dec 1998) |
| anaesthesia, caudal | Epidural anaesthesia administered via the sacral canal. (12 Dec 1998) |
| anaesthesia, closed-circuit | Inhalation anaesthesia where the gases exhaled by the patient are rebreathed as some carbon dioxide is simultaneously removed and anaesthetic gas and oxygen are added so that no anaesthetic escapes into the room. Closed-circuit anaesthesia is used especially with explosive anaesthetics to prevent fires where electrical sparking from instruments is possible. (12 Dec 1998) |
| anaesthesia department, hospital | Hospital department responsible for the administration of functions and activities pertaining to the delivery of anaesthetics. (12 Dec 1998) |
| anaesthesia dolorosa | Severe spontaneous pain occurring in an anaesthetic area. Synonym: painful anaesthesia. (05 Mar 2000) |