Question

Using the spinal cord cross section below, draw and label the five components of a reflex arc. Make sure the cell bodies are placed correctly. Name the structure that contains the cell body of the sensory neuron.

Answer 1

A reflex arc consists of five components: sensory receptor, sensory neuron, interneuron, motor neuron, and effector. In the spinal cord cross section, the cell body of the sensory neuron is found in the dorsal root ganglion.

Step-by-step explanation:

Spinal Cord Cross Section

A reflex arc is a neural pathway that controls an involuntary action in response to a stimulus. It consists of five components:

1. Sensory receptor: The structure that detects the stimulus, such as a receptor ending in the skin or muscle.
2. Sensory neuron: The neuron that carries the sensory information from the receptor to the spinal cord.
3. Interneuron: The neuron that relays the sensory information from the sensory neuron to the motor neuron within the spinal cord.
4. Motor neuron: The neuron that carries the motor command from the spinal cord to the muscle.
5. Effector: The muscle or gland that carries out the response to the stimulus.

In the case of the spinal cord cross section, the structure that contains the cell body of the sensory neuron is the dorsal root ganglion.