C3 (cervical vertebra)
C3 (cervical vertebra): The third cervical (neck) vertebra from the top.
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- C4 (cervical vertebra)
C4 (cervical vertebra): The fourth cervical (neck) vertebra from the top.
- C6 (cervical vertebra)
C6 (cervical vertebra): The sixth cervical (neck) vertebra from the top. The next-to-last of the seven cervical vertebrae.
- C5 (cervical vertebra)
C5 (cervical vertebra): The fifth cervical (neck) vertebra from the top.
- C7 (cervical vertebra)
C7 (cervical vertebra): C7 is the symbol for the 7th cervical (neck) vertebral bone (C7) which is sometimes called the prominent vertebra due to the length of its spinous process (the projection off the back of the vertebral body). The spinous process of the top thoracic vertebra (T1) just below C7 is sometimes even more […]
- CA
CA: 1. Short (and slang) for cancer and carcinoma. 2. Abbreviation for cardiac arrest; chronological age; coronary artery.