| pectoralis muscles | Muscular tissues attached to the front of the chest wall and extending to the upper arms. These are under the breast. They are divided into the pectoralis major and the pectoralis minor muscles. (09 Oct 1997) |
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| pectoral muscles | Muscles underlying the breast area. (16 Dec 1997) |
| respiratory muscles | These include the muscles of the diaphragm and the intercostal muscles. (12 Dec 1998) |
| retinacula of extensor muscles | See: inferior extensor retinaculum, superior extensor retinaculum. (05 Mar 2000) |
| retinacula of peroneal muscles | Superior and inferior fibrous bands retaining the tendons of the peroneus longus and brevis in position as they cross the lateral side of the ankle. Synonym: retinacula musculorum peroneorum, retinacula musculorum fibularium, retinacula of peroneal muscles. (05 Mar 2000) |
| retinaculum of flexor muscles | A wide band passing from the medial malleolus to the medial and upper border of the calcaneus and to the plantar surface as far as the navicular bone; it holds in place the tendons of the tibialis posterior, flexor digitorum longus, and flexor hallucis longus. Synonym: retinaculum musculorum flexorum, laciniate ligament, ligamentum laciniatum, retinaculum of flexor muscles. (05 Mar 2000) |
| cervical interspinales muscles | Origin, tubercle of spinous process of cervical vertebra; insertion, tubercle of spinous process of next superior vertebra; action, extends the neck; nerve supply, dorsal rami of cervical nerves. Synonym: musculus interspinalis cervicis, cervical interspinal muscle. (05 Mar 2000) |
| cervical rotator muscles | The rotator muscles attached to the cervical vertebrae. Synonym: musculi rotatores cervicis, cervical rotator muscles. (05 Mar 2000) |
| perineal muscles | The muscles located in the perineal region; these are the external anal sphincter, the superficial transverse perineal muscle, ischiocavernosus muscle, bulbospongiosus muscle, deep transverse perineal muscle, and sphincter urethrae muscle. Synonym: musculi perinei. (05 Mar 2000) |
| rider's muscles | The adductor muscle's of the thigh, which come into play especially in horseback riding. (05 Mar 2000) |
| pharyngeal muscles | The muscles of the pharynx are the inferior, middle and superior constrictors, salpingopharyngeus, and stylopharyngeus. (12 Dec 1998) |
| rotator muscles | Deepest of the three layers of transversospinalis muscles, chiefly developed in the thoracic region; they arise from the transverse process of one vertebra and are inserted into the root of the spinous process of the next two or three vertebrae above; action, traditionally described as a column, it is more likely that these muscles, provided with a very high density of muscle spindles, are organs of proprioception; nerve supply, dorsal primary rami of the spinal nerves. Synonym: musculi rotatores, rotator muscles. (05 Mar 2000) |
| mimetic muscles | The numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. Nomina Anatomica also includes the buccinator muscle in this group; even though it functions primarily in mastication. Synonym: musculi faciales, facial muscles, mimetic muscles. (05 Mar 2000) |
| congenital fibrosis of the extraocular muscles | An autosomal dominant disorder associated with blepharoptosis and absence of eye movements. (05 Mar 2000) |
| muscles, abdominal | A large group of muscles in the front of the abdomen that assists in the regular breathing movement and supports the muscles of the spine while lifting and keeping abdominal organs such as the intestines in place. Abdominal muscles play a key role in exercises such as sit-ups. (12 Dec 1998) |