Which is the most complex part of the brain?

Which is the correct sequence of the components of a reflex arc?

The sympathetic and parasympathetic nervous systems are parts of which system?

$(a)$ If the cerebellum is not functioning properly,what are the activities of our body affected?
$(b)$ How do muscle cells move?

Name two tissues that provide control and coordination in multicellular animals.

Name the system which facilitates communication between the central nervous system and the other parts of the body. Mention two types of nerves it consists of along with their organ of origin.