Exam 28: Nervous Systems

Which statement about ion channels and voltage-gated ion channels is true?

Treatments for depression often include drugs that help correct imbalances in the levels of

The central communication conduit between the brain and the rest of the body is the

The network of neurons that extends through the core of the brainstem and selects information that reaches the cerebral cortex during sleep is the

You are practicing throwing baseballs long distances with the members of your baseball team. At the same time that your partner throws the ball to you, another player across from you throws his baseball off-target, and it heads straight toward you. You hold your baseball glove up to catch your partner's ball, and you instinctively throw up your other arm to protect your face from the other incoming ball. The protective action of throwing up your arm is an example of a(n)

Oligodendrocytes are cells in the brain that produce myelin in the central nervous system. Myelin regulatory factor (MyRF) is a transcription factor that is required by oligodendrocytes in order to produce myelin. Researchers investigated the importance of MyRF by having mice learn how to run on complex wheels (there were many gaps in the wheel thus making it difficult to run on-see graph below). -When mice are learning to run on these complex wheels, what part of the brain are they primarily using?

In all vertebrates, the brain consists of the

The gap between the transmitting and receiving neurons in a chemical synapse is known as the

Which statement regarding the nervous system is true?

You are sitting with a friend in the park next to some children who are playing Frisbee. You turn to talk to your friend and out of the corner of your eye you see a Frisbee quickly approaching your face. As an innate, protective behavior, you blink your eyes. The protective action of blinking is an example of a(n)

Neurotransmitters that open Na⁺ channels and trigger action potentials in receiving cells are called

Multiple sclerosis results from an autoimmune disease that primarily involves

Low levels of the neurotransmitter dopamine can lessen the ability to focus effectively on tasks. However, high levels of dopamine can result in feelings of motivation. How would you classify dopamine and why?

Action potentials relay different intensities of information due to the

When the human brain's normal electrical activity is suddenly altered, a seizure can result. Seizures cause several behavioral and physical complications such as sudden mood changes, muscle spasms, or uncontrollable body shaking. Seizure impulses often start in one hemisphere of the brain and travel to the other. Which of the following surgical treatments would reduce the severity of seizures?

Which division of the human nervous system carries signals to skeletal muscles?

Our emotions, learning, and memory depend upon the

The autonomic nervous system

You start to fall but then catch yourself, regaining your balance. Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

Parkinson's disease