Motor (Efferent) Neurons
Motor (sometimes called Efferent) neurons take information from the brain and send in out to the rest of the body.Â If you want to draw on a piece of paper, you use motor (efferent) neurons to pick up a pencil and Â move your fingers into the paper.
- Cell body in CNS, axon in PNS
- Transmit signals from CNS to effector tissues (muscle or gland)
Two basic types of motor neurons
- Somatic motor neurons -Â control all of our voluntary muscle movements.Â Everything from choosing to kick a ball to scratching an itch.Â Every time you choose to move your body you are using motor neurons in the somatic nervous system.
- Innervates skeletal muscle
- Voluntary control
- Autonomic motor neurons -Â control all of the automatic functions of our body.Â Our heart rate, lungs, internal organs, etc… Â
- Innervates smoothÂ muscle, cardiac muscle,Â or glands
- Involuntary control
- Divided into sympathetic and parasympathetic divisions