Exam 1: Nerve Cells and Nerve Impulses

 Neurons receive information and transmit it to other cells.

 A presynaptic terminal is also known as ____.

 Many dendrites contain short outgrowths called spines that _____.

 Small, charged molecules can cross the cell membrane through ____.

 The action potential of a neuron depends mostly on what movement of ions?

 At the resting potential, the potassium channels are completely closed and the sodium channels are almost closed.

 ____ in the brain and spinal cord and ____ in the periphery are specialized types of glia that build the myelin sheaths that surround neurons.

 Which of the following describes the transmission of information in a local neuron?

 Describe the key aspects of the resting potential.

 Dr. McLaughlin's lab studies how newly formed proteins are folded inside neurons. They would be most interested in studying the _____.

 During the relative refractory period, the ____.

 Korsakoff's syndrome ____.

 Dr. Blanchard is giving a lecture about the propagation of the action potential. What would she tell the class?

 There are two types of glial cells that produce myelin sheath. In the central nervous system, Schwann cells fulfill this role and, in the periphery, oligodendrocytes produce it.

 The insulating material that covers many vertebrate axons is called the ____.

 What is the role of the myelin sheath? Describe the two types of cells that make the myelin sheath.

 Nettie is in the laboratory working with cultured neurons. She wants to record the voltage following the opening of the sodium channels. What does she need to do to get the sodium channels to open?

 Professor Xi studies the _____ located on the _____ of neurons in order to better understand how messages are received by the neuron.

 The concentration gradient refers to the ____.

 Neurons are distinguished from other cells by their shape.