triangular intervalの例文

• It obliquely crosses the tendons of the extensor pollicis brevis by a triangular interval, the anatomical snuff box in which the radial artery is found.
• The two heads are separated from one another at their origins by a triangular interval ( " supraclavicular fossa " ) but gradually blend, below the middle of the neck, into a thick, rounded muscle which is inserted, by a strong tendon, into the lateral surface of the mastoid process, from its apex to its superior border, and by a thin aponeurosis into the lateral half of the superior nuchal line of the occipital bone.