ANIMAL+RECEPTORS+CHART


 * **__ANIMAL RECEPTORS: THE SENSE ORGANS__** ||
 * **TYPE OF RECEPTOR ORGANS** || SENSE || SENSE ORGAN || WHAT STIMULI DO THEY DETECT? HOW DO THEY WORK? ||
 * **PHOTORECEPTOR**
 * ORGANS** || Sight || Eyes || They contain receptor cells which capture the light.

They can be **simple eyes** (e.g. invertebrates) or **compound eyes (arthropods )** are composed of thousands of units or **ommatidia. Together, these units provide the animal with a mosaic image.**
 * Camera-type eyes** (cephalopods and almost all vertebrates have these eyes). Light is focused on the retina. They provide clear images of the surroundings. ||
 * ** MECHANORECEPTOR ORGANS** || Hearing || Ears or hearing organs || They detect sound, vibrations in the air or water and transmit them to the brain.

There are also cells that perceive changes in the position of the head and **in balance.** The skin has receptor cells that respond to pressure. ||
 * Balance organs: Cells that are sensitive to gravity and indicate the position of the animal´s body.** ||
 * ^  || Touch || Skin (most animals) || They detect pressure, touch, pain and temperature changes.
 * ^  ||^   || Lateral line ( fish) || It is capable of detecting vibrations and movements in the water. ||
 * **CHEMORECEPTOR**
 * ORGANS** || Smell || Nose (vertebrates)

Antennae (arthropods) || It detects chemical substances dissolved in the air.

Antennae contain many receptors that respond to substances in the air, working as olfatory organs. || It is covered with tiny **taste buds (papilas gustativas)** ||
 * ^  || Taste || Tongue || It captures chemical substances dissolved in water.