Question

Complete the following statement from what you have learned about the motor unit. In some neurodegenerative diseases the lower motor neuron cell bodies die and the remaining lower motor neurons sprout processes that innervate the neuromuscular synapses vacated by the dead lower motor neurons. In these muscles, the size of the motor unit ____________ and the strength of the muscle contraction generated by individually activating each surviving motor neuron _________.

Answer 1

The correct answer is - increase, increase.

Step-by-step explanation:

In some neurodegenerative diseases, some lower motor neuron cells die and the remaining lower motor neurons continuing the process of the vacated dead motor neuron cells to innervate the neuron and muscle synapses.

The size of the motor unit increases and due to the innervations of the new axon

increases the strength of the muscle contraction occurred by individually activating each surviving motor neuron. Here multiple motor units will be controlled by a single neuron.