week 5

Spinal interneurons prevent muscle antagonists from interfering with an intended movement bySelect one:
a. initiating a tendon reflex
b. initiating a stretch reflex
c. activating reverberating circuits
d. inhibition of the antagonist's motoneurone 
e. initiating a crossed extensor reflex

What neural pathway provides for the control of fine, discrete movements of the extremities?
a. corticospinal tract 
b. rubrospinal tract
c. reticularspinal tract
d. tectospinal tract
e. spinothalamic tract

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

Which of the following reflexes is a monosynaptic reflex found in the human body?
a. muscle spindle stretch 
b. withdrawal
c. pupillary light
d. crossed-extensor
e. crossed-flexor

In response to stepping on a nail, the crossed-extensor reflex causesSelect one:
a. extension of the arm 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. flexion of the leg on the side of receptor activation 
e. extension of the leg on the side of receptor activation

Which of the following is not part of the basal ganglia?Select one:
a. substantia nigra
b. caudate nucleus
c. globus pallidus
d. putamen
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. crossed extensor reflex 
b. stretch reflex
c. tendon reflex
d. reciprocal reflex
e. flexor reflex

The withdrawal reflex is initiated by activation of what type of receptor?
a. warm receptor
b. photoreceptor
c. muscle spindle stretch receptor
d. taste receptor
e. nociceptor

Damage to the cerebellum will lead to which of the following symptoms?
a. a complete inability to move
b. the generation of clumsy, poorly directed movements 
c. the generation of slow, small movements only
d. an inability to accurately plan a movement
e. the generation of movement of large muscle groups only

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. can only be activated by a rapid change in muscle length, such as a tap to the tendon
c. sends information (via interneurons) only to the cerebellum
d. sends information (via interneurons) mainly to the primary somatosensory cortex
e. is responsible for our sensation of where our limbs are