Ключевые слова: acute, allergic, allergy, anatomical, bacterial, base of skull, bulb, cancer, carcinoma, cavity, cold, covid19, ct, ct scan sinuses, disease, ethmoid, face, flu, frontal, head, headache, health, human, illness, illustration, infection, inflammation, maxillary, medical, microbe, microbial, nasal, nasal cavity, nasopharynx, nose, para, respiratory, rhinitis, science, sick, sickness, sinus, sinusitis, sneeze, streptococcus pneumoniae, structure, treatment, virus,