CENTRAL SOMATIC SENSORY SYSTEM EXAM QUESTIONS AND CORRECT ANSWERS (EXPERT VERIFIED) JUST RELEASED| 2025/2026 | SURE TO PASS !!

CENTRAL SOMATIC SENSORY SYSTEM EXAM QUESTIONS AND CORRECT ANSWERS (EXPERT VERIFIED) JUST RELEASED| 2025/2026 | SURE TO PASS !! 1. The ____ is a large, egg-shaped collection of nuclei located bilaterally above the brainstem - ANSWER Thalamus 2. The gracile fasciculus tract is responsible for A) Crude touch (conscious) B) Pain and temperature (conscious) C) Proprioception (unconscious) D) Proprioception, vibration, and fine touch of T6 and below (conscious) E) Proprioception, vibration, and fine touch of T6 and above (conscious) - ANSWER D) Proprioception, vibration, and fine touch of T6 and below (conscious) 3. The cuneate fasciculus tract is responsible for A) Crude touch (conscious) B) Pain and temperature (conscious) C) Proprioception (unconscious) D) Proprioception, vibration, and fine touch of T6 and below (conscious) E) Proprioception, vibration, and fine touch of T6 and above (conscious) - ANSWER E) Proprioception, vibration, and fine touch of T6 and above (conscious) 4. Which is non-discriminative. crude touch or fine touch? - ANSWER Crude touch (Anterolateral system) 5. Which is discriminative, crude touch or fine touch? - ANSWER Fine touch (DCML) 6. Which is non-discriminative, the anterolateral system or DCML system? - ANSWER Anterolateral (crude touch) 7. Which is discriminative, the anterolateral system or DCML system? - ANSWER DCML (fine touch) 8. ____ touch is the sense to know if you are being touched - ANSWER Crude touch (Anterolateral system) 9. ____ touch is knowing where you are being touched - ANSWER Fine touch (DCML) 10. Is "light touch" considered crude touch or fine touch? - ANSWER Crude touch (Anterolateral system) 11. T/F - Light touch is a stimulus, not a sensation (pressure) - ANSWER True 12. T/F - Light touch is associated with fine touch which is a part of the DCML system - ANSWER False associated with crude touch which is a part of the anterolateral system 13. What are the functions of sensory tracts? - ANSWER - Contributes to smooth and accurate movements - Injury - Helps us understand the external world (sensation leads to perception) 14. ____ carry info from the periphery to the dorsal horn of the spinal cord A) 1st order sensory neuron B) 2nd order sensory neuron C) 3rd order sensory neuron D) All of the above - ANSWER A) 1st order sensory neuron 15. Which sensation is not received by the thalamus? - ANSWER Olfactory 16. What directs attention to important info by regulating the activity level of cortical neurons and flow of info to the cortex? - ANSWER Thalamus 17. Where does the thalamus receive info from? - ANSWER - BG - Cerebellum - All sensory systems (except olfactory) 18. In the brainstem, most tracts are ____ and most nuclei are ____ A) Medial, lateral B) Lateral, medial C) Posterior, anterior D) Anterior, posterior - ANSWER D) Anterior, posterior 19. What tracts make up the anterolateral system? - ANSWER - Lateral spinothalamic tract - Anterior spinothalamic tract 20. What tracts make up the spinocerebellar tracts? - ANSWER - Posterior spinocerebellar tract - Anterior spinocerebellar tract 21. What tracts make up the dorsal column medial lemniscus (DCML) system? - ANSWER - Gracile fasciculus - Cuneate fasciculus 22. What are the motor and descending tracts of the spinal cord? - ANSWER - Pyramidal tracts - Extrapyramidal tracts 23. What are the sensory and ascending tracts of the spinal cord? - ANSWER - DCML - Spinocerebellar tracts - Anterolateral system 24. The DCML, spinocerebellar, and anterolateral systems are all A) Sensory and afferent B) Sensory and efferent C) Motor and afferent D) Motor and efferent - ANSWER A) Sensory and afferent