The law of agency is an area of commercial law dealing with a contractual or quasi-contractual, or non-contractual set of relationships when an agent is authorized to act on behalf of another (called the Principal) to create a legal relationship with a Third Party.
Upper Motor Neurones (UMN), Lower Motor Neurone (LMN) and their Lesions. All the neurons contributing to the pyramidal and extrapyramidal systems should be called upper motor neurons (UMN). The anterior horn cells and the related neurons in the motor nuclei of some cranial nerves are called lower motor neurons (LMN). Axons of these cells give rise to the peripheral motor nerves.
The neurons of the upper motor neuron system are located in the cerebral cortex (Figure 103.1[1]), basal ganglia (Figure 103.1[2]), cerebellar nuclei (Figure 103.1[3]), red nuclei (Figure 103.1[4), reticular formation (Figure 103.1[5]), and the lateral vestibular nucleus (Figure 103.1[6]).hese axons travel through the brain and brainstem to make contact with the motor neurons in the brainstem and through the brain, brainstem, and spinal cord (Figure 103.1[4]) to make contact with the motor neurons in the anterior horn of the spinal cord.