You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Hemiparesis is not seen with? and explain in detail?
PICA supplies the lateral pa of the medulla and spares the coicospinal pathway. Hence no hemiparesis is seen. MCA occlusion will damage motor coex leading to hemiplegia. PCA occlusion will damage coicospinal pathway traveling midbrain. Coicospinal pathway traverses the medial pa of medulla which is supplied by the anterior spinal aery.