Motor Unit Anatomy

Question 1

Cell body

Answer 1

Connects the nucleus of the motor unit

Connects to the dendrites

Question 2

Dendrites

Answer 2

Transmit information to other neurons and axons

Question 3

Axon

Answer 3

Conducts nerve impulses away from the cell body towards their intended destination

Question 4

Myelin Sheath

Answer 4

Insulative sheath that speeds up cell to cell transmission. Surrounds axon to conduct impulses.

Question 5

Nodes of Ranvier

Answer 5

Small breaks in the myelin sheath
Create ion channels which regulate ion conc.
Movement of ions allows change in voltage across the memb.

Question 6

Neuromuscular Junction

Answer 6

Transmits impulses from the motor neuron to the skeletal muscle fibre quickly and effectively.