week 5

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

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

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

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

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

Which of the following is not part of the basal ganglia?Select one:
A. putamen
B. substantia nigra
C. caudate nucleus
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. flexor reflex
B. tendon reflex
C. crossed extensor reflex 
D. stretch reflex
E. reciprocal reflex

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

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

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