26. Extrapyramidal tracts convey A) sensory information about pain and temperatu

Question

26. Extrapyramidal tracts convey A) sensory information about pain and temperature B) sensory information about body position C) sensory information about touch and pressure D) motor impulses coordinating movements and maintaining muscle tone E) motor impulses triggering precise, voluntary skeletal movements D)sensory impulses related to pain ana tempe Third-order sensory neurons in the posterior column-medial lemniscus pathway extend from the A) skin to dorsal root ganglia B) dorsal root ganglia to the posterior gray horn of the spinal cord C) spinal cord to the medulla oblongata D) medulla oblongata to the thalamus E) thalamus to the somatosensory area of the cerebral cortex ) motor impulses controlling muscle tone 42. 66. ALL of the following are TRUE for postganglionic neurons EXCEPT: A) They have nicotinic receptors on their membranes. B) Their cell bodies are in the gray horns of the spinal cord. C) Their axons are unmyelinated. D) They are stimulated by preganglionic fibers. E) They stimulate visceral effectors

Explanation / Answer

26 - ( D ) EXTRAPYRAMIDAL TRACTS CONVEY MOTOR IMPULSES COORDINATING MOVEMENTS AND MAINTAINING MUCLE TONE

The primary function is the motor control to regulate reflexes , maintain posture & Tone.

42. - ( E ) thalamus to somatosensory area of cerebral cortex

Axons from the third order in the thalamus synapse in the primary somatosensory cortex.

66. - (D) THE POST GANGLIONIC NEURONS STIMULATED BY THE ACETYLCHOLINE NEUROTRANSMITTER RELEASED BY THE PREGANGLIONIC NEURONS

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