HB+Senses

=**Senses**=

What is the function of a sensory receptor?

 * Sensory receptors are dendrites specialized to detect certain types of stimuli.

What is a exteroceptor?

 * Exteroceptors are sensory receptors that detect stimuli from outside the body, such as those that result in taste, smell, vision, hearing, and equilibrium.

What is an interoceptor?

 * Interoceptors recieve stimuli from inside the body. For example, among interoceptors, pressoreceptors respond to changes in blood pressure, osmoroceptors detect changes in the water-salt balence, and chemoreceptors monistor the pH of blood.

What is a chemoreceptor?

 * Cehmoreceptors respond to chemical substances in the immediate vicinity. Taste and smell, which detect external stimuli, utilize chemoreceptors; but so do various other organs that are sensitive to internal stimuli.

What is a pain receptor?

 * Pain receptors are a type of chemoreceptor. they are naked dendrites that respond to chemicals released by damaged tissues.

What is a photoreceptor?

 * Photoreceptors respond to light energy. Our eyes contain photoreceptors that are sensitive to light rays and thereby provide us with a sense of vision.

What is a mechanoreceptor?

 * Mechanoreceptors are stimulated by mechanical forces, which most often result in pressure of some sort. When we hear, airborne sound waves are converted to fluid-borne pressure waves that can be detected by mechanoreceptors in the inner ear.

What is a thermoreceptor?

 * Thermorecptors located in the hypothalus and skin are stimulated by changes in temperature. Those that respond when temperature rise are called warmth receptors, and those that respond when temperatures lower are called cold receptors.

Explain sensation.

 * Sensation occurs when nerve impulses reach the cerebral cortex.

What is sensory adaptation?

 * Sensory adaption is a decrease in response to a stimulus.