Sensory organs

Sensory organs

• They are peripheral departments of the corresponding sensory systems.
• The organs are specifically intended to perceive visual, auditory, statokinetic, olfactory, and gustatory stimuli.
• They contain receptors formed by:
  • neurons — sensorineural or primary sensory receptors (organs of vision and smell);
  • specialized epithelial cells associated with sensitive endings of neurons — sensoepithelial or secondary sensory receptors (organs of hearing, equilibrium, and taste).

Sensory system (analyzer)

• Such a system is a complex of structures that perceive signals from the external or internal environment to analyze and synthesize them.
• It should include:
  • a peripheral section — perceives the signal and converts its energy into a nerve impulse;
  • conductive section — pathways to allow the nerve impulse brain entering;
  • a central section — corresponding cortical nerve center