Imagery and cognitions would not be possible without the functioning of the nervous system.
Explanation:
The nervous system refers to a group of nerves and cells called neurons which transfer signals to and from the brain and spinal cord to different parts of the body. It has two components which are: the central nervous system and the peripheral nervous system. The central nervous system consist of the spinal cord, brain and nerves while the peripheral nervous system consist of ganglia, sensory neurons and nerves which connect to one another.
There are proteins in the membrane that have channels for large polar molecules to move into or out of the cell since the plasma membrane is made of a phospholipid bilayer where the inside is non polar. This means large polar molecules need help from proteins to cross the plasma membrane.