PSLE Science – General Practice Test

The function of the nervous system is to transmit signals between different parts of the body. This system is essential for communication and coordination within the body. It allows various organs and systems to work together efficiently by sending and receiving signals in the form of electrical impulses. These signals facilitate responses to stimuli, control voluntary movements, and manage involuntary actions such as breathing and heart rate.

This communication enables the brain to process information from the environment, leading to appropriate reactions and actions. For example, when you touch something hot, nerve signals carry the message to your brain, which then prompts you to withdraw your hand quickly to prevent injury.

The other choices highlight important functions of different systems in the body. Circulating blood is the role of the circulatory system, while digestion is primarily handled by the digestive system. Providing structural support is the function of the skeletal system. Each of these systems contributes to overall body function, but only the nervous system is responsible for the transmission of signals that coordinate bodily responses and maintain homeostasis.