General
What is the space filled with fat tissue and blood vessels superficial to the dura mater of the spinal cord?
Epidural space
The anterior root of the spinal cord contains which type of neurons?
Motor/multipolar
The nerves that fan out after the spinal cord ends are known as:
The cauda equina
What is the second component of a typical reflex arc?
Sensory (unipolar) neuron
Where does sensory information enter the spinal cord?
Posterior side
What specifically is found in the posterior root ganglion?
Cell bodies of unipolar neurons
How many cervical pairs or spinal nerves are there?
8
What is the fifth and final component of a typical reflex arc?
The effector (muscle or gland)
Ascending tracts send (sensory/motor) information.
Sensory
Where do axons cross over in the spinal cord?
Gray commissure
Segments of the skin supplied by specific spinal nerves are called:
Dermatomes
If a withdrawal reflex is happening in the leg, what needs to happen to the other leg?
It needs to extend (cross-extensor reflex)
In which two spaces does CSF flow in the spinal cord?
Central canal and subarachnoid space
The rami communicantes carries motor output to which division of the autonomic nervous system?
Sympathetic division
Which plexus contains the phrenic nerve which serves the diaphragm?
Cervical plexus
In a reflex, sensory information is gained from the muscle via the:
Muscle spindle
What is the deepest spinal cord meninge called?
Pia mater
Where does the spinal cord end?
Between L1 and L2
Which plexus contains the sciatic nerve, the largest nerve in the body?
Sacral plexus
The corticospinal tract is an: (ascending or descending tract)
Descending tract