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Equinology EQ50
Equine muscle terminology
| Term | Definition |
|---|---|
| Agonist | A muscle that is the prime mover |
| Antagonist | A muscle counteracting the action of another muscle |
| Atrophy | A wasting away of a body part or tissue or a decrease in size |
| Hypertrophy | An increase in muscle size or overgrowth |
| Hypotonicity | Abnormal decreased in resting muscle tone, usually indicates a long-standing problem. The muscle will feel soft and squishy to the touch |
| Hypertonicity | Abnormal increase in resting muscle tone, usually indicates an issue causing inflammation and irritation to a peripheral nerve such as a spinal joint dysfunction. The muscle will feel extremely tight and spasms may accompany palpation |
| Insertion | The distal end of the muscle, which has crossed at least one joint and is attached to the movable part. Upon contraction of the muscle (shortening) movement will occur |
| Origin | The proximal end of the muscle that is usually closest to the body. It serves as an anchor for movement during the contraction phase |
| Extrinsic | A muscle whose origin begins in one system and in which the insertion crosses or bridges another system; such as in the axial skeletal system to an appendicular system |
| Intrinsic | A muscle whose origin begins in one system and the insertion ends in the same system |
| Major | Greater in size or function |
| Minor | Lesser in size or function |
| Ascendens | A muscle lying in an upward or uphill direction; ascending |
| Cephalicus | Muscles originating near or at the head |
| Collagen | A fibrous insoluble protein found in the connective tissue, skin, ligaments and cartilage |
| Complexus | (Latin) embracing, encircling (obsolete term for the semispinalis capitis) |
| Descendens | A muscle lying in a downward or downhill direction; descending |
| Digitorum | Digit; a muscle going to the digit |
| Levator | A muscle that raises or elevates a body part |
| Obliquus | (Latin) slanting; oblique |
| Pennaform | (Latin) feather-formed |
| Profundus | Deep muscle |
| Rector/Rectus | Latin for straight. Erector; a straight muscle or one that straightens |
| Serratus | Serrated, jagged, notched muscle |
| Teres | Round muscle |
| Vast | Huge, great |