MICROANATOMICAL OBSERVATION OF ARTERIES OF HUMAN MEDULLA OBLONGATA / 西安交通大学学报(医学版)

ABSTRACT

The external arteries of human medulla oblongata were examined and the internal arterial morphological features, distribution and the relation with the external arteries were investegated by using cleared slides of brain stem. The external arteries are divided into four groups anteromedial group, anterolateral group, lateral group and posterior group. Those groups penetrate into the medulla and become corresponding groups of internal arteries. The anteromedial group of internal arteries supplies nervous structures on the sides of median line including hypoglossal nucleus and part of corticospinal tract The anterolateral group supplies corticospinal tract and inferior olivary nucleus. The lateral group supplies reticular formation, spinothalamic tract and dorsal vagal nucleus. Finally, the posterior group, gradually disappering at the upper part of medulla mainly supplies cuneat nucleus and gracile nucleus.