Here are the terms based on your definitions:
- Suffix meaning pain: -algia (e.g., neuralgia)
- Prefix meaning difficult: dys- (e.g., dysphagia)
- Suffix meaning expansion: -ectasis (e.g., bronchiectasis)
- Study of a cause of a disease: Etiology
- Support cells of the brain: Neuroglia (or glial cells)
- Suffix meaning blood condition: -emia (e.g., anemia)
- Prefix meaning upon: epi- (e.g., epidermis)
- Prefix meaning good: eu- (e.g., euphoria)
- Suffix meaning excision: -ectomy (e.g., appendectomy)
- Root word meaning stomach/abdomen: gastro- (e.g., gastrointestinal)
Let me know if you need further assistance or explanations!