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The corona radiati converges together at the internal capsule
Which is also subcortical white matter, in the cerebrum
It then moved to the cerebral peduncle in the midbrain of the brainstem
This tract arises from the lateral aspect of the primary motor cortex and travels with the corticospinal tract through the internal capsule.
The motor impulse travels from the primary motor cortex through the corona radiati.
Which is subcortical white matter in the cerebrum
These carry a variety of outgoing and incoming fibers (tracts)
To the Brainstem
To the cerebellum
These neuron end on the motor nuclei of the cranial nerves.
The upper motor neurons of the corticobulbar tract synapse with interneurons or directly with the lower motor neurons located in the motor cranial nerve nuclei
The Corticospinal Tract starts from the pre-central gyrus, in the frontal lobe. Also known as the primary motor cortex/strip.
It then moves to the medulla of the brainstem
This is the lowest point of the brainstem, where the brainstem becomes the spinal cord, and the fibers cross midline to the other side
Then it moves to the level of the spinal cord where the desired muscle is
Here, they synapse with lower motor neurons, which carry the motor signals to the muscles of the face and neck.
The corticospinal tract is the direct motor pathways that move muscles of the body
The corticospinal tract is the direct motor pathways that move muscles the head and neck.
From the lower motor neuron to the dorsal (sensory) and ventral (motor) roots to take the motor impulse to the nerves for muscle movement!
From there, it moves To the anterior horn/alpha motor neuron (lower motor neuron), in the spinal cord
There are two direct pathways to the nerves, called the pyramidal tracts.
These include both the corticospinal and corticobulbar tracts.
BOTH are involved in control of motor functions of the body
These pathways are in control of voluntary, skilled movements
Deliberate, controlled movements of skeletal muscle