Which covering of the spinal cord lies directly on the nervous tissue and follows its grooves?

Which covering forms the tough outer sac around the spinal cord inside the vertebral canal?

Which spinal covering lies between the tough outer layer and the delicate layer attached to the cord?

Which meninx sends weblike strands across the CSF-filled space just deep to it?

Which covering is deep to the CSF-filled space and clings to the outside of the cord?

From the vertebral canal moving inward, which meninx is encountered before the middle and inner coverings?

Which covering is the middle membrane, with CSF deep to it and the tough sac superficial to it?

Axons entering the cord through a dorsal root commonly synapse first in which gray matter region?

Motor axons leaving the cord for skeletal muscle travel through which structure?

Cell bodies of somatic motor neurons whose axons exit the front side of the cord are in which region?

Sensory neuron cell bodies sit just outside the cord before their fibers enter on the back side. Which structure contains them?

The white matter on the back side of the cord carries many ascending sensory pathways. What region is this?

In thoracic segments, the gray projection on the side of the H-shaped center sends visceral motor output. Which region is it?

Afferent fibers carrying input from a receptor approach the cord on its back side. Which structure do they use?

Just outside the spinal cord, the dorsal root and ventral root join together. Which structure do they form?

A heat receptor in the skin detects a dangerous temperature. In a withdrawal arc, what carries the signal toward the cord next?

A sensory neuron has delivered its signal into gray matter during a withdrawal reflex. What handles the signal next?

An interneuron in the cord has activated the outgoing pathway. Which component carries the command toward muscle next?

A motor neuron has delivered an impulse to a flexor muscle. What component produces the movement next?

Immediately before a sensory neuron carries an impulse toward the cord, which component detects the stimulus?

In the patellar reflex, the sensory neuron synapses directly on the motor neuron with no interneuron between them. What type of reflex is this?

In a withdrawal reflex, the interneuron that links the sensory neuron to the motor neuron lies in which part of the spinal cord?

Which reflex arc component lies entirely within the central nervous system?

In a polysynaptic withdrawal reflex, which component is immediately before the motor neuron?

A patellar tendon tap makes the lower leg extend before the patient is aware of the tap. What does that timing show?

A person pulls a hand from a hot pan before consciously feeling pain. Where was the quick response integrated?

After damage to the ventral root, touch is detected but the muscle does not contract during a reflex. Which pathway is blocked?

A cut dorsal root prevents a painful skin stimulus from triggering a reflex even though the muscle can contract. What is damaged?

Below a complete cord injury, a simple withdrawal reflex can still occur without voluntary control. What does this show?

A withdrawal reflex pulls the foot away from a sharp tack. Why is this classified as a somatic reflex?