Study Tips Motor Systems

Study Tips Motor Systems

corticospinal tract
Corticospinal tract (source Anatomy & Physiology OpenStax College; Download for free at
Study Tip Motor Systems 1.

The sensory pathways have the purpose of getting the stimulus/action potential to the brain as fast and as efficient as possible. They are the highways of the nervous system. They share the 3 neuron ‘design.’

Motor pathways have to do with the execution of  behavior. They are more diverse than sensory pathways and are fine-tuned by other neural systems. Opposed to the sensory pathways finding comparable key elements to compare the anatomy is not feasible. In contrast with sensory pathways they do not have a 3 neuron ‘design’.

The most direct motor pathways are the ‘Direct Somatic Motor pathways’. The corticospinal tracts for execution of behavior in the body. And the corticobulbar tracts for execution of behavior in the  face. Other motor pathways are the indirect pathways, the brainstem–to-spinal cord pathways.

First of all you can have a look at the direct and indirect motor systems in this animation: The extrapyramidal and pyramidal motor systems .

Study Tip Motor Systems 2.

Also you can use  the resources on page Virtual Lab, Unit 4: Motor Systems to enrich your understanding of the core concepts of motor systems.

Study Tip Motor Systems 3.

Basal ganglia are very important in motor pathway. In Tutorial Circuitry of the Basal Ganglia, part 2  at 8.28 to 11.02 the basal ganglia in the brainstem model are pointed out. This video material of the brainstem is good material to get a grip on the spatial orientation of the basal ganglia. In addition to this valuable course material it is very good to use this animation of the basal ganglia for your study.

Study Tip Motor Systems 4.

In addition to your study of the course material you can study reflexes by having a good look at the relevant animations of the textbook:  Stretch reflex animation and  The flexion reflex.

Study Tip Motor Systems 5.

Finally the “Handwritten Tutorials” on YouTube are very useful in your study.  The ones in bold are especially relevant to this unit.