Year 9 Revision: Control Systems

Front

What was the stimulus when Ella touched the hot plate?

Back

Touching the hot oven tray.

Front

What type of receptor detected the stimulus?

Back

Pain receptors (nociceptors) detected the stimulus.

Front

What role did the spinal cord play in this situation, and why is it important that the brain was not involved?

Back

The spinal cord processed the reflex action, allowing Luca to quickly pull his hand away without waiting for the brain to process the information. This is important because it provides a faster response to prevent further injury.

Front

Which of the following correctly represents the simple flowchart of a reflex arc involved in the response above? Options: Receptor → Sensory neuron → Relay neuron → Motor neuron → Effector, Effector → Motor neuron → Relay neuron → Sensory neuron → Receptor, Relay neuron → Sensory neuron → Receptor → Motor neuron → Effector, Sensory neuron → Receptor → Motor neuron → Relay neuron → Effector

Back

Receptor → Sensory neuron → Relay neuron → Motor neuron → Effector

Front

What sense organ allowed Luca’s sister to hear him?

Back

Ear

Front

Lucas stepped on a sharp pebble and screamed in pain. What was the stimulus in this situation?

Back

The stimulus was the sharp pebble that triggered a response.

Front

Type of receptor that detected the stimulus: Photoreceptor, Chemoreceptor, Thermoreceptor, Mechanoreceptor

Back

Mechanoreceptor

Front

The spinal cord played a role in this situation by:

Back

Transmitting reflex actions without involving the brain

Front

Create a simple flowchart of the reflex arc involved in this response.

Back

Receptor → Sensory neuron → Spinal cord/interneuron → Motor neuron → Effector

Front

What sense organ allowed Jasmine’s mum to hear her? Briefly describe the general role of the five senses.

Back

The ear allowed Jasmine’s mum to hear her. The five senses (sight, hearing, taste, smell, touch) help us perceive and respond to our environment.