The brain contains ________ of interconnected neurons and glia.

billions

________ is the electrical signal that typically moves from the cell body down the axon to the axon terminals.

action potential

Gyri and sulci are the ________ and ________, respectively, which characterize the surface of the human brain.

folds; grooves

In a resting state, sodium (Na+) is at a higher concentration outside the cell and potassium (K+) is more concentrated inside the cell. During an action potential, the sodium levels ________ inside the cell.

increase

Jennifer has been depressed for several months, and she decided to take an overdose of sleeping pills. After taking the pills, her breathing rate decreased dramatically, her heart slowed down, and her blood pressure decreased. Which brain structure is the drug acting on?

medulla

Randolf is walking down the street of his hometown, after being away for several years, when he smells the scent of freshly baked pie coming from a local baker. He suddenly has vivid memories of walking down this street as a child, holding both of his parents' hands, and swinging between them, feeling relaxed and happy. This is because the sense of smell projects directly to the ________, which is responsible for ________ memories.

limbic system; emotional

Clive Wearing could remember which of the following types of memory?

how to play the piano

The two major divisions of the nervous system are the ________ and ________.

central; peripheral nervous systems

Which of the following is not an endocrine gland?

hypothalamus

Wendy's mother has blue eyes and her father has brown eyes. The allele for brown eye color is dominant (B) to the allele for blue eye color (b), but Wendy has blue eyes. Therefore, Wendy's ________ must be ________ and her father's must be Bb.

genotype; bb