Specialty Medical Coding Certification. 1  Hematology and Oncology â CHONCâ¢. 2  Internal Medicine â CIMCâ¢. 3  Interventional Radiology and Cardiovascular â CIRCCÂ®. 4  Obstetrics Gynecology â COBGCâ¢. 5  Ophthalmology â COPCâ¢. 6  Orthopaedic Surgery â COSCâ¢. 7  Otolaryngology â CENTCâ¢. 8  Pediatrics â CPEDCâ¢. FREE Practice Exam & Study Guide through Aug 31st.
Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element and oxidizing agent that readily forms compounds (notably oxides) with most elements. Photosynthesis releases oxygen, and respiration consumes oxygen.
Oxygen atoms are present in water (H 2 O) and water is essential to all life. Oxygen and is present in many organic compounds.Most organisms use oxygen for respiration.While oxygen (O 2) is necessary for life, oxygen as ozone (O 3) is highly toxic. On the other hand, ozone is an important component of the atmosphere (the ozone layer) and helps to shield us from harmful ultraviolet rays from the sun.You can use this form to calculate how much oxygen your body contains.azards and risks associated with oxygen: oxygen at high partial pressures causes convulsions, pulmonary changes and teratogenic effects. Oxygen as ozone (O 3), peroxide, or superoxide is highly toxic. Too little oxygen results in asphyxiation.