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39 orbit [ ’ ɔ :bit] n глазная впадина shoulder-blade [ ’ s∫əuldə ’ bleid] n лопатка collar-bone [ ’ k ɔ ləbəun] n ключица flexible [ ’ fleksəbl] a гибкий jaw [d ʒɔ :] n челюсть cushion [ ’ ku∫ən] v смягчать frm [fə:m] a крепкий, прочный 25. Find six pairs of synonyms in exercises 23 and 24. 26. Translate the derivatives: 1) Bone, bony, backbone, tailbone; 2) to protect, protective, protection; 3) vertebra, vertebral, intervertebral, invertebrate; 4) spine, spinal, spineless; 5) to construct, construction, constructive; 6) frm, frmly, frmness; 7) flexible, inflexible, flexibly, flexibility; 9) fuse, fused, fusion. 27. Match the Latin and English medical terms: 1. cervix a) backbone 2. clavicle b) limb 3. sternum c) skull 4. scapula d) upper jaw 5. cranium e) collar-bone 6. thorax f) neck 7. maxilla g) breastbone 8. vertebral column h) thigh bone 9. coccyx  i) lower jaw 10. ulna j) cheek-bone 11. tibia k) chest 12. extremity l) shoulder-blade 13. femur m) shin-bone 14. zygomatic n) elbow bone 15. mandible o) kneecap 16. patella p) tailbone 28. Read and translate the following word combinations. Fused vertebrae, a shoulder girdle, flexible support, to be attached to the trunk, ankle bones, vertebral body and arch, to be connected together by the joints, the oral cavity, cartilaginous [ ‚ ka:ti ’ læd ʒ inəs] disks, to be joined by a suture, frm connection, to be composed of 12 vertebrae, the upper jaw, the longest bone in the body, to be attached to the diaphragm, organic and inor‑ ganic substances.