When admitted to the emergency room, Sean was holding his right hand, which had a deep puncture hole in its palm. He explained that he had fallen on a nail while exploring a barn. Sean was given an antitetanus shot to prevent neural complications. Tetanus bacteria fester in deep, dark wounds, but how do their toxins travel in neural tissue?

Video transcript

Hey, everyone. Let's take a look at this question together. John is a 62 year old man who has been living with Parkinson's disease for the past eight years. He has been experiencing tremors, stiffness in muscles and poor balance. Which neurotransmitter deficiency is associated with motor symptoms in Parkinson's disease. Is it answer choice. A serotonin answer choice. B no epinephrine, answer choice. C dopamine or answer choice. D acetycholine. Let's work this problem out together to try to figure out which of the following neurotransmitters is associated with the motor symptoms in Parkinson's disease. So from the information in the question, we know that there is a neurotransmitter deficiency that is associated with the motor symptoms that John experiences because of Parkinson's disease, which means that Parkinson's disease is a type of neuro degenerative disorder because of that deficiency of the neurotransmitter due to the degeneration of the specific neurotransmitter and the neurotransmitter that is degraded as a result of Parkinson's disease and the neurons that are degenerative as a result of Parkinson's disease are called the dopaminergic neurons that are found in the substantia nigra region of the brain. And because of the degeneration of the dopaminergic neurons. That means that Parkinson's disease is associated with a different efficiency of dopamine, which is the neurotransmitter associated with the motor symptoms. So answer choice C dopamine is the correct answer. Since the deficiency of dopamine leads to the motor symptoms that John experiences in Parkinson's disease such as the tremors, stiffness in muscles and poor balance. I hope you found this video to be helpful. Thank you and goodbye.