Neuro Final

Motor communication (brain to body)

• Afferent

• Efferent

• Decussation

• Axaxonic

Sensory communication (body to brain)

• Afferent

• Commissural fibers

• Efferent

What is the point called where fibers cross? Where does it occur?

• Projection fibers;

  Medulla oblongata

• Assocation fibers

  Medulla oblongata

• Axaxonic

  Medulla oblongata

• Decussation

  Medulla oblongata

Fibers that are between the hemisphere ex: corpus callosum

• Commissural fibers

• Association fibers

• Projection fibers

Relay sensory and motor information between the cortex and lower levels of CNS and PNS

• Commissural fibers

• Projection fibers

• Association fibers

Bidirectional channels for communication among areas within each hemisphere

• Association fibers

• Commissural fibers

• Projection fibers

Sends out signals to move muscles

• Hippocampus

• Aphasia

• Motor cortex

• Dysphagia

Which is a related disorder to Motor Cortex?

• Hemiplegia (Apraxia)

• Aphasia

• Dysphagia

Explain direct motor pathway (pyramidal system). Does it include LMN, UMN, or both?

• Is used for involuntary gross motor movements; UMN & LMN

• Is used for voluntary gross motor movements; UMN & LMN

• Is used for voluntary movement; UMN & LMN

Explain indirect motor pathway (extrapyramidal system). Does it include LMN, UMN, or both?

• Is used for voluntary movement (posture and reflexes); UMN only

• Is used for involuntary gross motor movements (walking and jumping); LMN only

• Is used for involuntary movement (posture and reflexes); LMN only