week 5

Spinal interneurons prevent muscle antagonists from interfering with an intended movement bySelect one:
A. activating reverberating circuits
B. initiating a tendon reflex
C. initiating a crossed extensor reflex
D. inhibition of the antagonist's motoneurone 
E. initiating a stretch reflex

What neural pathway provides for the control of fine, discrete movements of the extremities?
A. tectospinal tract
B. rubrospinal tract
C. corticospinal tract 
D. spinothalamic tract
E. reticularspinal tract

The monosynaptic stretch reflex:
A. does not constitute a negative feedback control system for limb position
B. is completed in less than 5 milliseconds 
C. helps maintain an upright posture
D. is only present for anti-gravity postural muscles
E. is inhibited by nociceptor intput

Which of the following reflexes is a monosynaptic reflex found in the human body?
A. crossed-extensor
B. withdrawal
C. crossed-flexor
D. pupillary light
E. muscle spindle stretch 

In response to stepping on a nail, the crossed-extensor reflex causesSelect one:
A. extension of the leg on the side of receptor activation
B. flexion of the leg on the side of receptor activation 
C. extension of the arm on the side of receptor activation
D. extension of the leg opposite the side of receptor activation
E. flexion of the leg opposite the side of receptor activation

Which of the following is not part of the basal ganglia?Select one:
A. caudate nucleus
B. substantia nigra
C. putamen
D. globus pallidus
E. paraventricular nucleus

The reflex that complements a withdrawal reflex by making compensatory adjustments on the opposite side of the body receiving the stimulus is the
A. reciprocal reflex
B. tendon reflex
C. stretch reflex
D. flexor reflex
E. crossed extensor reflex 

The withdrawal reflex is initiated by activation of what type of receptor?
A. photoreceptor
B. warm receptor
C. muscle spindle stretch receptor
D. nociceptor
E. taste receptor

Damage to the cerebellum will lead to which of the following symptoms?
A. the generation of slow, small movements only
B. the generation of movement of large muscle groups only
C. an inability to accurately plan a movement
D. the generation of clumsy, poorly directed movements 
E. a complete inability to move

The sensory fibre from a muscle spindle in a particular muscleSelect one:
A. sends information (via interneurons) to the antagonists of its own muscle 
B. is responsible for our sensation of where our limbs are
C. sends information (via interneurons) only to the cerebellum
D. sends information (via interneurons) mainly to the primary somatosensory cortex
E. can only be activated by a rapid change in muscle length, such as a tap to the tendon