The corticobulbar tract is composed of fibers that pass from the motor cortex to motor neurons in the trigeminal, facial, and hyoglossal nuclei in the brainstem. The fibers originate from pyramidal neurons in layer V of the cerebral cortex and travel through the internal capsule and cerebral peduncle to descend with the corticospinal tract in the pons and medulla. The corticobulbar tract is responsible for voluntary control of muscles of the larynx, pharynx, palate, face, jaw, and eyes. Damage to the tracts can result in pseudobulbar palsy, characterized by paralysis or weakness of muscles that control swallowing, talking, tongue,

1. BY-
FAHAD AHMAD.
ROLL NO.-27.
MBBS 1ST
YEAR(HIMSR).
CORTICOBULBAR TRACT.

2. CORTICOBULBAR TRACT
 IT IS COMPOSED OF THE FIBERS THAT
pass from the motor cortex to motor neuron
in the trigeminal ,facial and hyoglossal nuclei.
 Cortibulbar neuron end either directly on the
cranial nerve nuclei or on their antecedent
interneuron within the brain stem.
 Their axon travels through the genu of the
internal capsule the cerebral peduncle to
descend with corticospinal tract fibers in the
pons and medulla

3.  Corticobulbar tract neuron are pyramidal
shape and located in layer v of the cerebral
cortex.
 The cortical areas from which these tracts
originate were identified on the basis of
electrical stimulation that produced promt
discrete movement.

4.  The pyramidal tract fiber to the motor cranial
nuclei(particularly v,v//, x//) contitute the
corticobulbar tract.

5. FUNCTIONS OF CORTICOBULBAR
TRACTS.
 Responsible for voluntary control of muscles
of larynx,pharynx,palate,upper and lower
face,jaw,eye etc.
 Pseudobulbar palsy is a condition resulting in
paralysis or weakness of the muscles which
conrol swallowing,talking,tongue and lip
movements due to bilateral lesion of the
tracts.

6. THANK YOU.

7. THANK YOU.