You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Common carotid aery divides at the level of? and explain in detail?
Superior border of thyroid cailage.Common carotid aery ends at the level of upper border of the thyroid cailage by dividing into external & internal carotid aeriesAlso remember the following imp. levelsSternal angle - costal cailage of 2nd rib, T4/T5 IV discXiphoid process - T9Tracheal bifurcation - T4/T5 IV discTrachea extends from - C6 to T5Arch of aoa begins and ends at - T4Aoic opening in diaphragm - T12Esophageal opening in diaphragm - T10Vena caval opening in diaphragm - T8Thoracic duct crosses from Rt to Left - T5Splenic axis - 10th ribCeliac trunk arises - Tl 2/L, IV discSuperior mesenteric aery arises - LIRenal aeries - L1/L2Inferior mesenteric aery - L3Aoa ends by bifurcating into common iliac aeries - L4IVC begins at - L5Umblicus - L3/L4