Exam 1: Nerve Cells and Nerve Impulses

 If you were to accidentally touch a hot stove with your hand, you would quickly pull your hand away. The information carried to the muscles in your arm to make them contract was carried by ____.

 The primary feature of a neuron that prevents the action potential from traveling back from where it just passed is the ____.

 Dr. Kimi studies the plasma membrane of neurons. He specifically researches the specialized _____ that allow in important things like water, oxygen, sodium, and so on.

 The concentration gradient for potassium tends to ____.

 Radial glia ____.

 Santiago Ramon y Cajal demonstrated that ____.

 At the peak of the action potential, the electrical gradient of potassium ____.

 The resting potential is mainly the result of ____.

 Gaps in the insulating material that surrounds axons are known as ____.

 Electrical gradients lead to the ____.

 What type of glia helps to synchronize the activity of axons?

 Professor Peach is lecturing in her class about glial cells. She will tell her class that glial cells ______.

 Professor Cook is lecturing on the importance of the myelin sheath. He told that class that _____.

 In what direction does a local neuron transmit information?

 Dr. O'Reilly is trying to produce hyperpolarization in the neurons in her laboratory. What should she do?

 What type of glial cells myelinate axons in the brain and spinal cord?

 The difference in voltage in a resting neuron is called the resting potential.

 A drug will prevent an action potential if it ____.

 The greater the surface area of a dendrite, the more information it can receive from other neurons.

 Dr. Ruggs is giving a lecture about the all-or-none-law. What would she tell the class?