reflex arc

Question 1

What is a sensory neuron?

Answer 1

Detects stimuli like touch, pain, temperature change, and muscle stretch, converting them into electrical signals

Allows rapid, automatic responses to stimuli without the need for conscious brain processing.

Question 2

What role does the spinal cord play in reflex actions?

Answer 2

Controls a reflex action without involving the brain, allowing for faster responses to stimuli

Acts as a neutral pathway.

Question 3

What is the function of a motor neuron?

Answer 3

Carries the impulse from the spinal cord to the effector

Essential for executing the response.

Question 4

What is an effector?

Answer 4

Produces the response, such as leg muscle contraction

Examples include muscles and glands.

Question 5

Fill in the blank: The hand pulls away from a sharp object is an example of a _______.

Answer 5

Reflex Arc

Question 6

What is the first step in the reflex arc when touching a hot stove?

Answer 6

You touch a hot stove (stimulus)

Initiates the reflex arc process.

Question 7

What happens after receptors in your skin detect heat?

Answer 7

They send signals to the sensory neuron

This is the second step in the reflex arc.

Question 8

What does the sensory neuron do in the reflex arc?

Answer 8

Carries the impulse to the spinal cord

Transmits the signal for further processing.

Question 9

What is the role of the interneuron in the spinal cord?

Answer 9

Processes the signal and relays it to a motor neuron

Acts as a connector between sensory and motor neurons.

Question 10

What does the motor neuron do in the reflex arc?

Answer 10

Sends the impulse to the muscles in your hand (effector)

This causes you to withdraw your hand quickly.

Question 11

True or False: The reflex response involves conscious brain processing.

Answer 11

False

The response happens almost instantly without involving the brain at that moment.