The brain is primarily comprised of two different kinds of cells. They are neurons and

The sac-like structures that are found at the end of a neuron's axon and that contain neurotransmitters are called

When a neuron is at rest, the ions inside the cell are mostly _____ and the ions outside the cell are mostly _____.

Neuroplasticity is

The _____ is the cell body, which contains the nucleus.

In the disease _____, the myelin sheath is destroyed.

According to Sigmund Freud, unresolved conflicts can cause _____ at a certain stage of psychosexual development.

Helga is shy, so she works hard to look nice all the time in the hope that people will like her. This can be interpreted as an example of __________ as a defense mechanism.

According to Sigmund Freud, the desired outcome of the phallic stage of psychosexual development is