Question

Which one does not involve brain ?

• A. Spinal reflex
• B. Cerebral reflex
• C. Cranial reflex
• D. Voluntary action

Answer 1

The correct option is A Spinal reflex

Reflex is an involuntary and instantaneous action in response to a stimulus.

1. A spinal reflex is a reflex action is controlled by spinal cord and related sensory afferent and an efferent muscle without the influence of brain like we remove our hand when we touch hot object.
2. Cerebral reflex is an involuntary controlled action that involves brain like a closing of eyes in an exposure of light.
3. Cranial nerve is mediated by the pathway that includes cranial nerves and brain includes the peripheral and central nervous system.
4. Voluntary actions are those which depends on our will like eating, bathing etc. and controlled by the cerebellum.

The correct option is "Spinal reflex".