Reflex Arc and spinal cord

Identify structure B

• dendrite of the sensory neuron

• axon of sensory neuron

• dendrite of motor neuron

• axon of motor neuron

Identify structure E

• dendrite of sensory neuron

• axon of sensory neuron

• dendrite of motor neuron

• axon of motor neuron

The dorsal roots of each spinal segment

• bring sensory information to the spinal cord

• control peripheral effectors

• contain somatic and visceral motor neurons

• a, b and c are correct

The tough, fibrous outermost covering of the spinal cord is the:

• arachnoid

• pia mater

• dura mater

• subarachnoid

The gray matter of the spinal cord is dominated by:

• large numbers of myelinated axons

• large numbers of unmyelinated axons

• Schwann cells and satellite cells

• cell bodies of neurons

Identify structure #1

• dorsal root ganglion

• dorsal gray horn

• ventral gray horn

• ventral root

Contains axons of sensory neurons

• 12

• 5

• 1

• 11

Identify structure G

• motor neuron

• sensory neuron

• interneuron

• effector

The difference between a three and two neuron reflex is that a three neuron reflex

• passes through the dorsal root ganglion

• includes an efferent neuron

• includes an interneuron

• includes an afferent neuron

An axon of a motor neuron could synapse with

• a interneuron

• a sense organ

• a muscle cell

• either b or c