Mammalian Spinal Cords Flashcards
Describe: On a Mammalian Spinal Cord, where is the Dorsal root?
-Carries sensory information into the spinal cord.
-Typically has a ganglion (dorsal root ganglion).
-Located on the posterior (back) side of the spinal cord (connected to dorsal side of grey matter)
Describe: On a Mammalian Spinal Cord, where is the Ventral root?
-Carries motor information out of the spinal cord.
-Does not have a ganglion.
-Located on the anterior (front) side of the spinal cord (connected to ventral side of grey matter)
Describe: On a Mammalian Spinal Cord, where is the number of Cell bodies?
-Found in the grey matter of the spinal cord.
Describe: On a Mammalian Spinal Cord, where is the number of Sensory neuron cell bodies?
-Sensory neuron cell bodies are in the dorsal root ganglia.
-Their axons extend into the dorsal root and into the spinal cord.
Describe: On a Mammalian Spinal Cord, where is the number of Motor neuron cell bodies?
-Motor neuron cell bodies are in the ventral horn of the grey matter.
-Their axons exit through the ventral root
Describe: On a Mammalian Spinal Cord, where is the Dorsal root ganglia?
-Located on the dorsal root.
-Contain the cell bodies of sensory neurons.
-Looks like bulge on dorsal root
Describe: On a Mammalian Spinal Cord, where are the Spinal nerves?
-Formed by the merging of the dorsal and ventral roots.
-Contain both sensory and motor neurons.
Describe: On a Mammalian Spinal Cord, where is the White matter?
-Found on the outer regions of the spinal cord.
-Contains myelinated axons that form ascending and descending tracts.
-Surrounds the grey matter
Describe: On a Mammalian Spinal Cord, where is the Grey matter?
-Found in the inner regions of the spinal cord.
-Contains neuron cell bodies, dendrites, and unmyelinated axons.
-Shaped like a butterfly or the letter “H”.
