The image shows a medical terminology class activity worksheet divided into three sections: 1) Circle the correct combining form for given meanings (items 1-10). 2) Match medical terms with their definitions (items 11-25). 3) Write the full medical term for common abbreviations (items 26-31).

Answer
Section 1 (Combining Forms): 1. chest: pector/o (relating to the pectoral/chest area). 2. vein: phleb/o (common root for vein, e.g., phlebotomy). 3. vessel: angi/o (general term for blood vessels). 4. heart: cardi/o (the prefix for cardiac). 5. fatty paste: ather/o (as in atherosclerosis). 6. circle: coron/o (referring to the crown-like encircling of the heart by arteries). 7. pulse: sphygm/o (used in sphygmomanometer). 8. clot: thromb/o (as in thrombosis). 9. artery: arteri/o (direct root for arteries). 10. lobe: lob/o (e.g., lobectomy). Section 2 (Matching): 11. h (atherosclerosis = buildup of fat), 12. o (infarct = scar left by necrosis), 13. n (hypotension = low blood pressure), 14. i (vegetation = growth of tissue), 15. g (embolus = traveling clot), 16. j (occlusion = a plugging), 17. a (hypertension = high blood pressure), 18. c (thrombus = stationary clot), 19. l (constriction = compression), 20. e (normotension = normal blood pressure), 21. m (angina = cramp in heart muscle), 22. d (claudication = cramp in leg muscle), 23. k (ischemia = loss of blood flow), 24. f (arteriosclerosis = hard, nonelastic condition), 25. b (aneurysm = bulging of a vessel). Section 3 (Abbreviations): 26. PVC: Premature Ventricular Contraction. 27. PDA: Patent Ductus Arteriosus. 28. ASHD: Arteriosclerotic Heart Disease. 29. ICD: Implantable Cardioverter Defibrillator. 30. CHF: Congestive Heart Failure. 31. CAD: Coronary Artery Disease.