The primary somatic sensory cortex is located in the postcentral gyrus



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KEY POINTS

  1. If the tract name begins with spino (spinocerebellar), the tract is a sensory tract. If it tract name ends with spinal (vestibulospinal), the tract is a motor tract

  2. If pain sensation is not carried by tertiary neurons, we do not perceive them

  3. The lateral spinothalamic tracts conducts sensory impulses for pain and temperature from various levels of the spinal cord to the thalamus

  4. The medial lemniscus is a tract of nerve fibers that conveys sensory signals to the thalamus

  5. The primary somatic sensory cortex is located in the postcentral gyrus

  6. The spinothalamic tract conveys sensory information about which we become consciously aware

  7. Ascending tracts of the spinal cord occur in the columns

  8. The fasciculus gracilis and fasciculus cuneatus are both tracts for the dorsal column medial Lemniscal pathway

  9. The fasciculus gracilis on each side of the spinal cord is located in the dorsal column

  10. Decussation of ascending spinal pathways occur mainly within the Spinal cord and medulla oblongata

  11. The spinothalamic tracts decussate to the secondary neurons within the spinal cord

  12. The neuron of the spinothalamic system that sends impulses from the thalamus to the somatic sensory cortex is designated a tertiary neuron

  13. The neuron of the spinothalamic system that ascends within the spinal cord and carries sensory information from a dorsal horn to the thalamus is designated a secondary neuron

  14. Exteroreceptors provide information about the body’s external environment

  15. Sensory receptors that are stimulated by the position of the body or its parts are called Proprioceptors

  16. Muscle spindle receptors detect lengthening or stretching of muscle

  17. Golgi tendon organ receptors detects an increase in tension in a muscle

  18. The two main kinds of stretch receptors or proprioceptors that transmit information to the spinal cord and brain about muscle tension and length are Muscle spindles and Golgi tendon organs

  19. Pacinian corpuscles are somatic receptors involved in detecting heavy pressure

  20. The neuron of the spinothalamic system that sends impulses from the thalamus to the somatic sensory cortex is designated a tertiary neuron

  21. The neuron of the spinothalamic system that ascends within the spinal cord and carries sensory information from a dorsal horn to the thalamus is designated a secondary neuron

  22. Exteroreceptors provide information about the body’s external environment

  23. Sensory receptors that are stimulated by the position of the body or its parts are called Proprioceptors

  24. Muscle spindle receptors detect lengthening or stretching of muscle

  25. Golgi tendon organ receptors detects an increase in tension in a muscle

  26. The two main kinds of stretch receptors or proprioceptors that transmit information to the spinal cord and brain about muscle tension and length are Muscle spindles and Golgi tendon organs

  27. Pacinian corpuscles are somatic receptors involved in detecting heavy pressure

  28. The receptors of the fasciculus gracilis and fasciculus cuneatus decussate in the medulla oblongata

  29. The medial lemniscus is a tract of nerve fibers that conveys sensory signals to the thalamus

  30. The two major descending tracts are corticospinal and subconscious tracts

  31. Decussation of ascending spinal pathways occur mainly within the spinal cord and the medulla oblongata

  32. The lateral spinothalamic tract is responsible for transmitting pain and temperature

  33. The anterior spinothalamic tract is responsible for transmitting light touch and pressure


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