FREE AND STUDY GAMES ABOUT NERVE EXAM

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FREE AND STUDY GAMES ABOUT NERVE EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -51 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: The all-or-none principle states that

Answer:

all stimuli great enough to bring the membrane to threshold will produce identical action potentials

Question 2: _______ are the most numerous type of neuron in the CNS

Answer:

Interneurons

Question 3: The myelin sheath that covers many CNS axons is formed by

Answer:

oligodendrocytes Question 4: The part of the peripheral nervous system that carries sensory information to the CNS is designated

Answer:

Afferent

Question 5: Voltage-gated channels are present

Answer:

in the membrane that covers axons

Question 6: Opening of sodium channels in the axon membrane causes

Answer:

depolarization and increased positive charge inside the membrane. A and D Question 7: Which of the following activities or sensations is not monitored by interoceptors?

Answer:

Sight

Question 8: The axon is connected to the soma at the

Answer:

axon hillock

Question 9: The sodium-potassium ion exchange pump

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moves sodium and potassium opposite to the direction of their electrochemical gradients.Question 10: The following are the main steps in the generation of an action potential.

Answer:

4, 6, 7, 1, 2, 3, 5

Question 11: Which of the following is not a function of the neuroglia?

Answer:

Memory Question 12: The same ________ can have different effects depending on the properties of the

________

Answer:

neurotransmitter; receptor

Question 13: Axons terminate in a series of fine extensions known as

Answer:

telodendria Question 14: Which of the following is not a recognized structural classification for neurons?

Answer:

pseudopolar

Question 15: The most abundant class of neuron in the central nervous system is

Answer:

multipolar Question 16: Small, wandering cells that engulf cell debris and pathogens in the CNS are called

Answer:

microglia Question 17: Neurons that are rare, small, and lack features that distinguish dendrites from axons are called

Answer:

anaxonic Question 18: The largest and most numerous of the glial cells in the central nervous system are the

Answer:

astrocytes

Question 19: Neurons that have several dendrites and a single axon are called

Answer:

Multipolar

Question 20: account for roughly half of the volume of the nervous system

Answer:

Neuroglia

Question 21: The ________ nervous system is composed of the brain and spinal cord.

Answer:

central

Question 22: The largest and most numerous neuroglia in the CNS are the

Answer:

astrocytes Question 23: Neurons that have one axon and one dendrite, with the soma in between, are called

Answer:

Bipolar Question 24: Which of the following are a type of glial cell found in the peripheral nervous system?

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satellite cells Question 25: ) Raising the potassium ion concentration in the extracellular fluid surrounding a nerve cell will have which effect?

Answer:

depolarize it Question 26: The neurilemma of axons in the peripheral nervous system is formed by

Answer:

Schwann cells.Question 27: Which of the following is not involved in creating the resting potential of a neuron?

Answer:

membrane permeability for sodium ions greater than potassium ions

Question 28: Which of the following is not a function of the nervous system?

Answer:

direct long-term functions, such as growth