Download key points - Dr. Tomas Madayag

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