Receptors MCQ - Practice Questions with Answers

Receptors

• A sensory organ or a cell which receives stimuli from the environment and passes impulses to the nervous system is called the receptor. 
• It is always connected to the central nervous system through the sensory nerves.
• These can be classified according to the type of stimuli they receive:

Mechanoreceptors:

• These receptors respond to the mechanical changes due to physical deformation of their plasma membranes.
• These are of following types:

                          Tangoreceptors: respond to touch and pressure, 
                           Baroreceptors: respond to stretching
                           Algesireceptors: respond to pain
                          Statoreceptors: respond to acceleration and gravity
                           Phonoreceptors: respond to airborne sound waves

Thermoreceptors:

• These receptors respond to temperature.

                            Caloreceptors: respond to heat, for example, Ruffini’s corpuscles
                            Frigido Receptors: respond to cold, for example, Krause’s corpuscles

Chemoreceptors:
                             These receptors to chemicals.
                             Gustatoreceptors: respond to taste, for example, taste buds
                             Olfactory Receptors: respond to smell

Nociceptors:

• They respond to potentially damaging stimuli that result in pain.