True or False Questions - Sinoe medical homepage.

Muscle Receptors and Spinal Reflexes11. Fast contracting, fatigue prone, muscle motor units are characterized byA. a large muscle force.B. a red color.C. a small innervation ratio.D. the first to be recruited.E. innervation from small motoneurons.12. The stretch reflex mediated by Ia fibresA. is dysynaptic to agonist musclesB. is mediated by small diameter fibresC. is primarily involved in regulating tensionD. is primarily involved in regulating length and change of lengthE. mediates the flexor reflexMotor Cortex13. The supplementary motor cortex is activated when a subjectA. flexes his fingerB. performs a complex finger movement sequence or when he only thinks about thesequenceC. only thinks about a complex finger movement sequence but not when the subjectactually makes the movement sequenceD. makes a complex finger movement sequence but not when he only thinks aboutthe movement sequenceE. touches an object with his fingers14. A large lesion of the motor cortex producesA. muscle fiber twitches (fasciculations)B. hypertonia in antigravity musclesC. muscle atrophyD. a negative Babinski signE. normal reflex responses to muscle stretchCerebellum and Basal Ganglia15. In the cerebellar repair shop of the VOR (vestibular ocular reflex).A. the VOR is modulated by excitatory input from Purkinje cells.B. the mossy fibre input signals retinal slip.