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41. Which of the following a function of the cell

Question : 41. Which of the following a function of the cell : 1411865

 

41. Which of the following is a function of the cell body in a nerve cell?

A. It encases and insulates most axons.

B. It carries information away from the axon toward other cells.

C. It speeds up the transmission of nerve impulses.

D. It directs the manufacture of substances required for growth and maintenance of neurons.

42. In the context of specialized cell structure, the primary function of dendrites is to _____.

A. keep the cell alive

B. insulate axons

C. secrete hormones

D. receive information

43. Which of the following is a function of the axon in a nerve cell in the context of specialized cell structure?

A. It manufactures substances required for growth and maintenance.

B. It is responsible for converting acting potential to resting potential.

C. It carries information away from the cell body toward other cells.

D. It receives information and orients it toward the neuron’s cell body.

44. In the context of specialized cell structure, the _____ is the part of the neuron that carries information away from the cell body toward other cells.

A. axon

B. dendrites

C. glial cell

D. nucleus

45. Which of the following best describes the process of transmitting information within a neuron in the context of specialized cell structure?

A. Cell body → dendrite → axon

B. Dendrite → cell body → axon

C. Axon → dendrite → nucleus

D. Nucleus → dendrite → axon

46. In the context of specialized cell structure, which of the following scenarios acts as the closest analogy to the function of the myelin sheath in the brain?

A. Becky is riding her skateboard down the hill.

B. Juan is rolling down the windows in his car to create resistance.

C. Amber is waxing her surfboard so that it will move easily through water.

D. Gerald is adding another coat of paint to the outer walls of his house.

47. In the context of specialized cell structure, the myelin sheath is a layer of cells containing _____.

A. fat

B. scar tissue

C. glia

D. treelike fibers

48. Which of the following is true about the myelin sheath in a nerve cell?

A. It is responsible for making axons poor conductors of electricity.

B. It facilitates the transmission of nerve impulses.

C. It is usually found only around the dendrite of most neurons.

D. It directs the manufacture of substances that the neuron needs for growth and maintenance.

49. A neurobiologist explains to his students that the human nervous system is analogous to electrical circuits in homes. If the circuit wires are not insulated, they are likely to cause a short circuit. In this scenario, the insulation on the wires can be likened to the _____ in the neural system.

A. terminal button

B. dendrites

C. cell body

D. myelin sheath

50. Walter has a degenerative condition known as multiple sclerosis (MS). In the context of specialized cell structure, his disease is most likely caused by the:

A. replacement of scar tissue by the myelin sheath.

B. hardening of the myelin sheath.

C. duplication of mirror neurons.

D. conversion of glial cells to neurons.

 

 

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