Spinal Cord Flashcards
Which 3 receptors are non-encapsulated
- Free nerve endings
- Merkel’s disk
- Hair follicle
Which 6 receptors are encapsulated
- Meissner’s corpuscle
- Pacinian corpuscle
- Ruffini ending
- Joint receptor
- Neuromuscular spindle
- Golgi tendon organs
Which 3 receptors are fast adapting
- Hair follicle
- Meissner’s corpuscle
- Pacinian corpuscle
Which 6 receptors are slow adapting
- Free nerve endings
- Merkel’s disk
- Ruffini ending
- Joint receptor
- Neuromuscular spindle
- Golgi tendon organs
What divisions are in the dorsal root afferents?
Medial and lateral divisions
Lateral division of the dorsal root afferents
Thin lightly myelinated fibers
Pain, temp, light touch, visceral afferents
Medial division of the dorsal root afferents
Thick, heavily myelinated fibers
2 pt touch, limb position, muscle stretch
Sends collaterals to medulla
What receptors detect muscle length?
Muscle spindle
What receptors detect muscle tension?
Golgi tendons
2 pt discrimination
Meissner corpuscle
Which nuclei modulate pain input? Pain gateway?
Substantia gelatinosa
Whats the main pain tract?
Nucleus proprius
Which nuclei sense position and proprioception (spindle info) of muscles?
Nucleus dorsalis
Which nuclei contain preganglionic cholinergic efferents?
IML
Which nuclei relate visceral afferents?
intermediomedial nucleus IMM
