Coordination Key points
1. Coordination is the way in which all the organs and systems of the body are made to work efficiently in a harmonized manner. In animals coordination is produced by two systems: nervous system and endocrine system.
2. Coordination is brought about through various elements of nervous system: receptors, sensory neurons, brain and spinal cord, motor neurons and effectors.
3. Reflex action is an automatic nervous reaction that cannot be consciously controlled and reflex arc is the nervous pathway which carries the impulses causing a reflex action.
4. Receptors are the sensory organs which receive stimuli. Eyes, ears, nose, tongue and skin are the sense organ of the man.
5. Pituitary, thyroid, parathyroid, pancreas (islets of Langerhans), adrenal, testis (in male) and ovary (in female) are endocrine glands present in human body.
6. The abuse of many drugs e.g., aspirin, morphine, heroine, cocaine, marijuana, hashish, nicotine, and alcohol can produce serious physiological, behavioral and mental problems in a person.
7. Paralysis and neurosis are the disorder of nervous system.
8. Auxins, gibberellins, cytokinins and are responsible for harmonious growth of plants.
