Answer:
False.
True.
True.
Step-by-step explanation:
Voluntary reflexes close in the spinal cord. (False).
Chains of reflexes conditioned in a certain order are instincts like defense against fire. (True)
The gray matter forms the cerebellar cortex in the large brain. (True)
Voluntary actions are done with consciousness and controlled by the brain, while reflex actions are done with unconsciousness and controlled by spinal cord. Reflex actions are the sudden actions taken by the spinal cord instead of brain because this action is performed quickly in order to avoid the damage.