PSY201 Final Exam 1

Which neurotransmitter exhibits dysfunction in most mood disorders?

Serotonin

Which of the following conditions is caused by misfolded proteins in the meninges?

Migraine

Which of the properties of “Animal Magnetism” described by Galvani is roughly equivalent to the Action Potential?

The Doctrine of Irritability

Which of the following phenomena makes a neuron less likely to produce an action potential?

Hyperpolarization

Which of the following is not a method of neurotransmitter clearance?

Transformation

Which of the following terms best describes a molecule binds to and activates a receptor?

Agonist

Norepinephrine

Arousal, alertness, and sex drive

Dopamine

Desire, reward, and motivation

Acetylcholine

Muscle movement

Serotonin

Emotion, learning and memory

Which ions are involved in maintaining membrane potential and propagating the action potential along the axon?

Sodium (Na+) & Potassium (K+)

At what stage of life does the brain have the highest number of neurons and synapses?

0-6 months of age

Which division of the peripheral nervous system allows the brain to communicate with the muscular system of the body, among other functions?

Somatic system

Which of the following subcortical divisions is involved in memory, emotion, and learning?

The limbic system

In which of the following neurons would the action potential travel the slowest?

A thin, unmyelinated neuron

Sequence of neurodevelopment

1. Neurogenesis

2. Cell Migration

3. Cell Differentiation

4. Synaptogenesis

5. Neuronal Pruning/Apoptosis

6. Synaptic Rearrangement

Resting Potential

The level of polarization within the cell membrane when it is at rest

Membrane Potential

The difference in charge across the cell membrane

Firing Potential

The level of polarization with the cell membrane need to produce an action potential

Action Potential

A chain reaction of depolarization that travels along the axon.