Form 3 Science DSKP Chapter 1 : Stimuli and Response

Front

What is the main function of the brain?

Back

The brain is the control center of the nervous system, responsible for processing sensory information, coordinating movement, and regulating bodily functions.

Front

What part of the nervous system connects the brain to the rest of the body?

Back

The spinal cord.

Front

What are peripheral nerves?

Back

Peripheral nerves are the nerves outside the brain and spinal cord that transmit signals between the central nervous system and the rest of the body.

Front

What is the difference between voluntary and involuntary actions?

Back

Voluntary actions are conscious and controlled by the brain, while involuntary actions occur automatically without conscious control.

Front

Give an example of a voluntary action.

Back

Examples include walking, talking, and writing.

Front

Give an example of an involuntary action.

Back

Examples include breathing, heart beating, and reflex actions.

Front

What is a reflex action?

Back

A reflex action is an automatic response to a stimulus that does not involve conscious thought.

Front

What is the role of sensory receptors in the nervous system?

Back

Sensory receptors detect stimuli from the environment and send signals to the brain for processing.

Front

What is the function of the optic nerve?

Back

The optic nerve transmits visual information from the retina to the brain.

Front

What is a common vision defect in humans?

Back

Common vision defects include myopia (nearsightedness) and hyperopia (farsightedness).