The most important structures to receive external stimulus are (1)__ and the system of these organs is called (2)__ .Two major sense organs are (3)__ and (4)__. The sense organs of human body are of (5)__ types.
1. Receptor organs, 2. Sensory system, 3. Ear, 4. Eye, 5. 5
The most important structures to receive external stimulus are Receptor organs, and the system of these organs is called Sensory system.Two prominent sense organs are ear and eye. Based on the sensations they receive, receptor organs systems are categorised into 5 types: Gustatory, Olfactory, Visual, Auditory and Tactile systems.