Exam 1: Nerve Cells and Nerve Impulses

 The endoplasmic reticulum is a ____.

 Which type of glia remove waste material in the nervous system?

 What type of neuron in the pons receives information only from other cells in the pons and sends information only to other cells in the pons?

 After the peak of an action potential, what prevents sodium ions from continuing to enter the cell?

 The tree-like branches of a neuron that receive information from other neurons are called _____.

 Explain the function and process of a neuron's refractory period.

 What causes potassium ions to leave the axon just after the peak of the action potential?

 Which action would depolarize a neuron?

 Provide a summary of the all-or-none law of action potentials.

 Jena is reviewing her notes on action potentials for a quiz. She makes an extra notation that before the action potential when the neuron is at rest, sodium channels _____.

 Professor Michaels is explaining to his students that, when the neuron is at rest, ______ is mostly responsible for the movement of potassium ions out of the cell.

 Voltage-activated channels are channels for which a change in the voltage across the membrane alters their ____.

 Dendrites ____.

 Increasing the electrical gradient for potassium will reduce the tendency for potassium ions to exit the neuron.

 In order to change the amount of polarization of a neuron, Professor Alley would need to change the difference in voltage between _____.

 The membrane of a neuron is composed of ____ with ____ embedded in them.

 Dr. Skinner is working in the lab measuring the voltage of neurons, and during one condition, she tried to depolarize the neurons from -70 mV to -80 mV.

 Dr. Delillo studies the resting potential of neurons. He has found that _______ is the main reason the neuron is able to maintain the resting potential.

 As a general rule, axons convey information ____.

 Dendrites contain the nuclei, ribosomes, mitochondria, and other structures found in most cells.