The simplest form of response in the nervous system is reflex action. This is a rapid, automatic response to a stimulus which is not under the voluntary control of the brain. It is described as an involuntary action. Thus, a reflex action is one which we perform automatically. It is a comparatively simple form of behaviour in which the same stimulus produces the same response every time.
1. Moving our hand away on touching a hot plate is an example of reflex action. State true or false.
(i) TRUE
(ii) FALSE
2. The action which we perform is a reflex action
(i) TRUE
(ii) FALSE
3. The pathway (or route) taken by nerve impulses in a reflex action is called _________.
(i) Reflex arc
(ii) Reflex action
4. State true or false. A reflex action is not an automatic response to a stimulus.
(i) TRUE
(ii) FALSE
5. State true or false. The reflexes of this type which involve only the spinal cord are called spinal reflexes.
(i) TRUE
(ii) FALSE
