Which of these is false regarding synaptic clefts?

The olfactory epithelium is the extension of which of the following?

Which of these structures are found in the midbrain?

Where are neurotransmitters present inside the neuron?

The iris is a continuation of which of these structures?

Where are bipolar neurons found?

Action potentials can be inhibitory. True or false?

What is the coiled portion of the labyrinth called?