Motor Control Systems — Flashcards

In _____ rigidity, the upper and lower limbs show extension due to loss of excitation by corticospinal and rubrospinal fibres on flexor alpha-motor neurons of spinal cord; and corticoreticular fibres on reticular formation of medulla.

Two kinds of excitatory input enter the cerebellum in the form of _____ fibers and mossy fibers

_____ of the globus pallidus internus results in excitation of the ipsilateral ventral lateral (VL) nucleus of the thalamus (basal ganglia pathway)

Stretch reflex:Muscle stretch reflex is a _____-synaptic reflex

Stretch reflex:What are the afferent fibres for muscle spindle receptor?_____

Layers of the cerebellum:Stellate, basket, Golgi and Purkinje cells release _____ at their endings.

Stretch reflex:Input from the muscle spindle afferents _____ and II, activate the alpha motor neurons, which innervate the extra-fusal fibres

Renshaw cell inhibition is an example of _____ inhibition.

The image shows decerebrate rigidity, in which there is _____ excitation

Clonus is due to sustained hyperactivity of _____ motor neurons.