Question 1

What are the main sense organs and their functions in the human body?

Accepted Answer

The main sense organs in the human body are the eyes, ears, nose, tongue, and skin. Each organ has a specific function: the eyes detect light and enable vision, the ears perceive sound and help with balance, the nose senses smell, the tongue detects taste, and the skin senses touch, temperature, and pain. These organs play a crucial role in the Coordination and Response system by providing sensory information to the brain.

Question 2

How do sense organs contribute to the coordination and response in the human body?

Accepted Answer

Sense organs contribute to coordination and response by detecting stimuli from the environment and sending this information to the brain via the nervous system. The brain processes the information and coordinates an appropriate response, such as moving away from danger or adjusting to changes in the environment. This process is essential for survival and interaction with the surroundings, a key concept in the Cambridge IGCSE Coordinated Science curriculum.

Question 3

What is the role of receptors in sense organs?

Accepted Answer

Receptors are specialized cells located in sense organs that detect specific types of stimuli, such as light, sound, or chemicals. Each type of receptor is sensitive to a particular kind of stimulus. For example, photoreceptors in the eyes detect light, while mechanoreceptors in the skin respond to touch. These receptors convert stimuli into electrical signals that are transmitted to the brain, where they are interpreted, allowing the body to respond appropriately.

Question 4

How do the eyes function as a sense organ in the human body?

Accepted Answer

The eyes function as a sense organ by detecting light and converting it into electrical signals that the brain can interpret. Light enters the eye through the cornea and lens, which focus it onto the retina at the back of the eye. The retina contains photoreceptor cells called rods and cones that detect light intensity and color. These cells send signals through the optic nerve to the brain, where the information is processed to create visual images. Understanding this process is part of the Cambridge IGCSE Coordinated Science syllabus.

Question 5

Why is the skin considered a sense organ, and what are its functions?

Accepted Answer

The skin is considered a sense organ because it contains a variety of receptors that detect different types of stimuli, such as touch, pressure, temperature, and pain. These receptors send signals to the brain, allowing the body to respond to environmental changes. The skin also plays a protective role, acting as a barrier against pathogens and helping regulate body temperature. Its multifaceted functions make it an important topic in the study of Coordination and Response in the Cambridge IGCSE Coordinated Science curriculum.

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