The roots of hairs may also be well supplied with sensory receptors that inform the animalĬontact with an object (see diagram 15.1). Within the dermis of the skin are numerous modified nerve endings that are sensitive to touch and pressure. The special sense organs may be quite complex in structure. The special senses which include the senses of smell, taste, sight, hearing and balance. Some are found in muscles and within joints. The general senses of touch, pressure, pain and temperature that are distributed fairly evenly through the skin. The senses are often divided into two groups:ġ. The impulses are then processed and interpreted in the brain as pain, sight, sound, taste etc. All sense organs respond to stimuli by producing nerve impulses that travel to the brain via a sensory nerve. Some animals can sense electric and magnetic fields. They enable animals to avoid hostile environments, sense the presence of predators and find food.Īnimals can sense a wide range of stimuli that includes, touch, pressure, pain, temperature, chemicals, light, sound, movement and position of the body. Sense organs allow animals to sense changes in the environment around them and in their bodies so that they can respond appropriately.
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