How many pairs of cranial nerves are present in mammals?

There are how many pairs of cranial nerves in human?

How many pairs of nerves arise from the spinal cord?

The number of spinal nerves in human body are

Reflex arcs are evolved in animals for quick and efficient responses. Which one of the following sequences correctly represents a reflex arc?

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?