The cerebral cortex is known as grey matter. True or false?

Which of these is surrounded by the iris?

Where are the specific receptors of neurotransmitters present?

Which of these is not an ear ossicle?

To which of these colors are the cone cells of the eye unresponsive?

How is the resting potential restored after a nerve impulse?

Which of these does not take place when a stimulus is applied to a polarized axonal membrane?

Which of these structures are present on the post-synaptic membrane?