cerebral peduncle


Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

cerebral peduncle

[sə′rē·brəl pi′dəŋ·kəl]
(cell and molecular biology)
One of two large bands of white matter (containing descending axons of upper motor neurons) which emerge from the underside of the cerebral hemispheres and approach each other as they enter the rostral border of the pons.
References in periodicals archive ?
It crosses the superior cerebellar artery close to the cerebral peduncles, passes the lateral edge of the clivus bone, and runs under the petroclinoidal ligament into the cavernous sinus between the double layer of dura and connective tissue at its lateral border, just below the oculomotor nerve and above the ophthalmic branch of the trigeminal (5th cranial) nerve.
Structures arising from the mesencephalon are the superior and inferior colliculi of the tectum, cerebral peduncles, optic lobes, optic tectum, tegmentum and somatic motor neurons of cranial nerves III and IV.
12] It is composed of three layers: the tectum, tegmentum and the cerebral peduncles.

Full browser ?