SOLVED

41. You are a cell in the human nervous system. Your primary function is to provid support for neurons, hold them together, and help remove waste products and other substances which could otherwise harm them. You are ______. a. an epidermalcellc. an adipose cell b. a glial celld. a lymph cell 42. Recent evidence suggests that glial cells may play an important role in ______ a. learning and memoryc. growth and metabolic regulation b. endocrine functioningd. maturation and aging The Neural Impulse 43. Electrically charged particles found both inside and outside the neuron are ______ a. folliclesc. free radicals b. nodesd. ions 44. Resting potential is the electrical charge across a neural membrane when _____ ions concentrate on the outside and ______ concentrate on the inside. a. not enough negative; excess positive b. not enough positive; excess negative c. excess negative; excess positive d. excess positive; excess negative 45. During its resting state, the electrical charge inside the neuron is ______ the electrical charge outside the neuron. a. positive compared toc. larger than b. negative compared tod. smaller than 46. The cell body is enclosed by the ______ a. axonc. cell membrane b. dendrited. myelin sheath 47. An electrical charge across a neural membrane when positive ions concentrat on the outside and negative ions concentrate on the inside is called ______. a. fluxc. depolarization b. an action potentiald. resting potential 48. Organisms or fluids attempting to enter the cell body of a neuron must first pass through the ______. a. myelin sheathc. axon b. cell membraned. dendrite 49. When the electrical charge inside a neuron is negative in relation to th outside, the neuron is said to be in a state of ______. a. equilibriumc. polarization b. shockd. depolarization 50. When a neuron is polarized, ______ a. both positive and negative ions are concentrated outside the neural membrane b. positive ions are concentrated outside the neural membrane while negative ions are concentrated inside the membrane c. negative ions are concentrated outside the neural membrane while positive ions are concentrated inside the membrane d.