Common carotid aery divides at the level of?
Hyoid bone
Cricoid cailage
Superior border of thyroid cailage
Inferior border of thyroid cailage
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