Okay, in biology we have been talking about ATP respiration, enzymes, etc.
I was reading more about the subject to find answers I have been pondering about lately, and looking on more online articles to get a better idea. I realize next semester when I take Anatomy and Physiology I'll learn all this more in-depth, but I can't wait. So, I figured what better place to ask a question than this forum.
My question has to do with the CNS and motor units. I understand that the motor units (motor nuerons and it's muscle fibers) are activated by the Nervous System through the spinal cord and the brain through the anterior horn cell, and fire/recruite accordingly depending upon the work being performed. Now, once a muscles motor units are triggered, how do the muscle and CNS actually fatigue? Would the muscle fatigue because it runs out of adenosine triphosphate, and the mitochondria cannot create more quickly enough to supply energy to the working muscle(s)? How would the CNS actually fatigue? It seem the muscle would fatigue quicker than the Nervous System because how would you beable to alternate superset in a workout? If you take a working set until muscle failure, you could immediately switch to a different muscle group and work that without a problem.
Thanks in advance!
I was reading more about the subject to find answers I have been pondering about lately, and looking on more online articles to get a better idea. I realize next semester when I take Anatomy and Physiology I'll learn all this more in-depth, but I can't wait. So, I figured what better place to ask a question than this forum.
My question has to do with the CNS and motor units. I understand that the motor units (motor nuerons and it's muscle fibers) are activated by the Nervous System through the spinal cord and the brain through the anterior horn cell, and fire/recruite accordingly depending upon the work being performed. Now, once a muscles motor units are triggered, how do the muscle and CNS actually fatigue? Would the muscle fatigue because it runs out of adenosine triphosphate, and the mitochondria cannot create more quickly enough to supply energy to the working muscle(s)? How would the CNS actually fatigue? It seem the muscle would fatigue quicker than the Nervous System because how would you beable to alternate superset in a workout? If you take a working set until muscle failure, you could immediately switch to a different muscle group and work that without a problem.
Thanks in advance!