| long gyrus of insula | The most posterior and longest of the slender straight gyri that compose the insula. Synonym: gyrus longus insulae. (05 Mar 2000) |
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| long head | The head that has the more proximal origin. Nomina Anatomica lists long heads (caput longum...) of the following: 1) biceps brachii muscle (... Musculi bicipitis brachii ); 2) biceps femoris muscle (... Musculi bicipitis femoris ); 3) triceps brachii muscle (... Musculi tricipitis brachii ). Synonym: caput longum. (05 Mar 2000) |
| long head of triceps | <anatomy, muscle> Origin, infraglenoid tuberosity of scapula; insertion, posterior and upper olecranon and fascia of the forearm; action, extends and adducts arm. (06 Mar 2000) |
| long-horned | <zoology> Having a long horn or horns; as, a long-horned goat, or cow; having long antennae, as certain beetles (Longicornia). Source: Websters Dictionary (01 Mar 1998) |
| long incubation hepatitis | Outdated name for hepatitis B based on the longer incubation period (generally 30-180 days, usually 60-90) compared to hepatitis A (15-45 days, mean 30). (05 Mar 2000) |
| long interspersed elements | Long repetitive sequences in DNA with terminal repeats seen in human and mouse DNA. (05 Mar 2000) |
| Long, John | <person> U.S. Physician, 1856-1927. See: Long's coefficient, Long's formula. (05 Mar 2000) |
| long-leg arthropathy | A degenerative joint disease that develops, after many years, in the knee of the longer leg of a person with unequal leg lengths. (05 Mar 2000) |
| long levatores costarum muscles | Insertion, the second rib below their origin; action, raise ribs; nerve supply, intercostal. Synonym: musculi levatores costarum longi. (05 Mar 2000) |
| long-lived | Having a long life; having constitutional peculiarities which make long life probable; lasting long; as, a long-lived tree; they are a longlived family; long-lived prejudices. Source: Websters Dictionary (01 Mar 1998) |
| long muscle of head | <anatomy, muscle> Origin, anterior tubercles of transverse processes of third to sixth cervical vertebrae; insertion, basilar process of occipital bone; action, twists or flexes neck anteriorly; nerve supply, cervical plexus. Synonym: musculus longus capitis, long muscle of head, musculus rectus capitis anticus major. (05 Mar 2000) |
| long muscle of neck | <anatomy> Medial part: origin, the bodies of the third thoracic to the fifth cervical vertebrae; insertion, the bodies of the second to fourth cervical vertebrae; superolateral part: origin, the anterior tubercles of the transverse processes of the third to fifth cervical vertebrae; insertion, the anterior tubercle of the atlas; inferolateral part: origin, the bodies of the first to third thoracic vertebrae; insertion, the anterior tubercles of the transverse processes of the fifth and sixth cervical vertebrae; action, for all three parts, twist neck and flex neck anteriorly; nerve supply, for all three parts, ventral primary rami of cervical spinal nerves (cervical plexus). Synonym: musculus longus colli, long muscle of neck. (05 Mar 2000) |
| long palmar muscle | <anatomy, muscle> Origin, medial epicondyle of humerus; insertion, flexor retinaculum of wrist and palmar fascia; action, makes palmar fascia tense and flexes the hand and forearm; is absent about 20% of the time; when tensed, its tendon stands out sharply at the wrist and overlies the median nerve; nerve supply, median. Synonym: musculus palmaris longus, long palmar muscle. (05 Mar 2000) |
| long peroneal muscle | <anatomy, muscle> Origin, upper two-thirds of outer surface of fibula and lateral condyle of tibia; insertion, by tendon passing behind lateral malleolus and across sole of foot to medial cuneiform and base of first metatarsal; action, plantar flexes and everts foot; nerve supply, superficial peroneal. Synonym: musculus fibularis longus, musculus peroneus longus, long fibular muscle, long peroneal muscle. (05 Mar 2000) |
| long plantar ligament | <anatomy> A strong ligament that extends from the calcaneus to the cuboid and lateral metatarsals on the plantar aspect of the foot; part of the passive support system for maintaining the longitudinal arch of the foot. Synonym: ligamentum plantare longum. (05 Mar 2000) |