Akademik

A forking; a division into two branches. SYN: bifurcatio [TA].

- b. of aorta SYN: aortic b..

- aortic b. [TA] the division of the aorta into right and left common iliac arteries; it occurs at the level of the fourth and fifth lumbar vertebral body. SYN: bifurcatio aortae [TA], b. of aorta.

- b. of pulmonary trunk [TA] the division of the pulmonary trunk into right and left pulmonary arteries. SYN: bifurcatio trunci pulmonalis [TA].

- b. of trachea SYN: tracheal b..

- tracheal b. [TA] the division of the trachea into the right and left main bronchi; it occurs at the level of the fifth or sixth thoracic vertebral body and is marked internally by the presence of a carina or keellike ridge between the diverging bronchi. SYN: bifurcatio tracheae [TA], b. of trachea.

(in anatomy) the point at which division into two branches occurs; for example in blood vessels or in the trachea.