Simple Reflex Arc Quiz

What is a reflex response?

• An involuntary response not involving the conscious brain

• A slow response to stimuli

• A response that always involves the brain

• A voluntary action involving the brain

Which of the following is an example of a reflex response?

• Pain-withdrawal when stepping on a pin

• Reading a book

• Writing an essay

• Solving a math problem

What is the role of a sensory neurone in a reflex arc?

• To relay impulses to motor neurones

• To carry impulses to the brain

• To detect stimuli and send impulses to the spinal cord

• To contract muscles

Where does the relay neurone pass the impulse in a reflex arc?

• To the motor neurone

• To the effector directly

• To the sensory neurone

• To the brain

What is the function of a motor neurone in a reflex arc?

• To detect stimuli

• To process information in the brain

• To send impulses to the spinal cord

• To carry impulses to an effector

What is the effector in the pain-withdrawal reflex?

• The brain

• The spinal cord

• A muscle in the leg

• A sensory receptor

What happens when the muscle in the leg is stimulated by the motor neurone?

• The muscle sends a signal to the brain

• The muscle does nothing

• The muscle contracts and pulls the foot away

• The muscle relaxes

Why are reflex actions important?

• They involve complex thinking

• They help in learning new skills

• They minimize damage to the body and aid survival

• They are slow and deliberate

Which part of the nervous system is involved in a reflex arc?

• The conscious part of the brain

• The spinal cord

• The cerebellum

• The medulla oblongata

What is the stimulus in the pain-withdrawal reflex example?

• The spinal cord

• The pin

• The muscle contraction

• The motor neurone