What is knee jerk reflex?

Which of the following is not involved in knee jerk reflex?

What is advantage of reflex action?

What is reflex action? Write the path of reflex action when we sneeze.

Show that the relation R in the set R of real numbers, defined as R = {(a,b) : a le b ^(2)} is neither reflexive nor symmetric nor transitive.

What is a Reflex arc ?

What are reflexes ?

How is the knee jerk action takes place ?

What is the role of the brain in reflex action?

What is the difference between a reflex action and walking ?

Give an example of a relation. Which is (i) Symmetric but neither reflexive nor transitive. (ii) Transitive but neither reflexive nor symmetric. (iii) Reflexive and symmetric but not transitive. (iv) Reflexive and transitive but not symmetric. (v) Symmetric and transitive but not reflexive.