| IQAS | internal quality assurance system |
|---|---|
| IRE | internal rotation in extension; iron-responsive element; isolated rabbit eye |
| IRF | idiopathic retroperitoneal fibrosis; impulse response function; interferon regulatory factor; intern... |
| IRS | immunoreactive secretion; infrared spectrophotometry; insulin receptor species; insulin receptor sub... |
| ISH | icteric serum hepatitis; in situ hybridization; internal self helper; International Society of Hemat... |
| aponeurosis of external abdominal oblique muscle | <anatomy> Broad, flat tendinous portion of the external abdominal oblique muscle. The fleshy fibres of the muscle end in the aponeurosis along a line descending vertically from the costochondral joint of the ninth rib then turning laterally just below the level of the umbilicus toward the anterior superior iliac spine. The fibres of the aponeurosis run medially and inferiorly, contributing to the anterior wall of the sheath of the rectus abdominis muscle and decussating with those of the contralateral aponeurosis at the median linea alba. Inferomedially, the aponeurosis is attached to the upper border of the pubic symphysis, the pubic crest and pubic tubercle. Between the anterior superior iliac spine and the pubic tubercle, it is thickened and turned under, forming the inguinal ligaments. The portion of the aponeurosis attached to the pubic bone forms the superficial inguinal ring by splitting into medial and lateral crura. See: external spermatic fascia, inguinal ligament, lacunar ligament, pectineal ligament, reflected inguinal ligament, superficial inguinal ring, rectus sheath. (05 Mar 2000) |
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| appendicular muscle | <anatomy> One of the skeletal muscle's of the limbs. (05 Mar 2000) |
| articularis cubiti muscle | <anatomy> The name applied to a small slip of the medial head of the triceps that inserts into the capsule of the elbow joint. Synonym: musculus articularis cubiti, articular muscle of elbow, subanconeus muscle. (05 Mar 2000) |
| articular muscle | <anatomy> A muscle that inserts directly onto the capsule of a joint, acting to retract the capsule in certain movements. Synonym: musculus articularis. (05 Mar 2000) |
| articular muscle of elbow | <anatomy> The name applied to a small slip of the medial head of the triceps that inserts into the capsule of the elbow joint. Synonym: musculus articularis cubiti, articular muscle of elbow, subanconeus muscle. (05 Mar 2000) |
| articular muscle of knee | <anatomy, muscle> Origin, lower fourth of anterior surface of shaft of femur; insertion, suprapatellar bursa of knee joint; action, retracts suprapatellar bursa, during extension of knee; nerve supply, femoral. Synonym: musculus articularis genus, articular muscle of knee, Dupre's muscle, subcrural muscle, subcruralis, subcrureus, subquadricipital muscle. (05 Mar 2000) |
| aryepiglottic muscle | <anatomy> The fibres of the oblique arytenoid muscle that extend from the summit of the arytenoid cartilage to the side of the epiglottis; action, constricts the laryngeal aperture. Synonym: musculus aryepiglotticus. (05 Mar 2000) |
| axial muscle | <anatomy> One of the skeletal muscle's of the trunk or head. (05 Mar 2000) |
| axillary arch muscle | <anatomy> An anomalous muscle or tendinus slip that passes across the axilla from the pectoralis major to insert with the latissimus dorsi onto the humerus. Though to be a vestige of the panniculus carnosus muscle of lower mammals. Synonym: axillary arch muscle, axillary arch, pectorodorsal muscle. (05 Mar 2000) |
| bellies of digastric muscle | <anatomy> See: anterior belly of digastric muscle, posterior belly of digastric muscle. (05 Mar 2000) |
| bellies of omohyoid muscle | <anatomy> See: inferior belly of omohyoid muscle, superior belly of omohyoid muscle. (05 Mar 2000) |
| Bell's muscle | <anatomy> A band of muscular fibres, forming a slight fold in the wall of the bladder, running from the uvula to the opening of the ureter on either side, bounding the trigonum. (05 Mar 2000) |
| biceps muscle of arm | <anatomy, muscle> Origin, long head from supraglenoidal tuberosity of scapula, short head from coracoid process; insertion, tuberosity of radius; action, flexes and supinates forearm (it is the primary supinator of the forearm); nerve supply, musculocutaneous. Synonym: musculus biceps brachii, biceps muscle of arm. (05 Mar 2000) |
| biceps muscle of thigh | <anatomy, muscle> Origin, long head (caput longum) from tuberosity of ischium, short head (caput breve) from lower half of lateral lip of linea aspera; insertion, head of fibula; action, flexes knee and rotates leg laterally; nerve supply, long head, tibial, short head, peroneal. Synonym: musculus biceps femoris, biceps muscle of thigh, musculus biceps flexor cruris. (05 Mar 2000) |
| biopsy, muscle | <investigation, procedure, surgery> A procedure which involves the removal of a small specimen of muscle tissue for microscopic analysis. A muscle biopsy is used to distinguish between neurological and myopathic (muscle disease) disorders, identify muscular dystrophy, diagnose muscle infections and identify connective tissue disorders (necrotising vasculitis). (21 Mar 1998) |