Object

• fiber: Poliomyelitis causes an overall loss of motor units; therefore, the remaining units must innervate many more muscle fibers than they did originally.

• muscle: The gray matter contains the large nerve cells, the motor neurones, that innervate the skeletal muscles.

• cell: Motor neuron: A nerve cell that innervates muscle cells.

• fiber: The anterior horn cell or motor neuron as it is also called is the nerve cell which innervates the skeletal muscle fibers.

Subject

• neuron: Acute Polio: Poliovirus invasion of one motor neuron produces degeneration of the motor neuron with denervation of muscle fibers innervated by that neuron.

• nerve: The larynx is innervated by two nerves on each side.

• column: Associated muscles are innervated by adjacent motor cell columns.

Modifying Another Word

• richly: It is also richly innervated ( supplied with nerves ) and very well endowed with sensory receptors.

Preposition: by

• neuron: Acute Polio: Poliovirus invasion of one motor neuron produces degeneration of the motor neuron with denervation of muscle fibers innervated by that neuron.

• nerve: Exposure of areas of skin not innervated by these nerves did not result in pain relief.

• column: Associated muscles are innervated by adjacent motor cell columns.