FREE AND STUDY GAMES ABOUT CHAPTER 10 ASSGN

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FREE AND STUDY GAMES ABOUT CHAPTER 10 ASSGN

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -44 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Which are the two major divisions of the nervous system?

Answer:

Central nervous system and peripheral nervous system Question 2: The master regulatory system that sends and receives information is the _____ system.

Answer:

nervous

Question 3: A junction between two neurons is called a ______.

Answer:

synapse Question 4: Since neurons can respond to changes in their surroundings, they are described as

_____.

Answer:

excitable

Question 5: An ______ postsynaptic potential involves the opening of sodium channels, depolarizing the membrane, and bringing it closer to a threshold level.

Answer:

excitatory Question 6: A cell membrane is ______ if its membrane potential becomes less negative (more positive) than the resting potential.

Answer:

depolarized Question 7: For the flow of information in the nervous system, match each component with its part in the process.

Answer:

Sensory Input<-->Receptor Integration <--> Brain and Spinal Cord Motor Output <--> Effector such as muscle Question 8: As an action potential occurs in one area of the axon, an electrical current to neighboring areas of the membrane initiates ______.

Answer:

another action potential Question 9: Ion channels that respond to neurotransmitter molecules are described as _____ gated.

Answer:

chemically Question 10: A(n) _____ period is a brief time following a nerve impulse when the membrane is unresponsive to an ordinary stimulus.

Answer:

refractory Question 11: Match each letter with the appropriate term for the neuron structure indicated by the arrow.

Answer:

axon <--> A dendrite <--> B axon <--> C

Question 12: Identify three functions of neuroglial cells.

Answer:

Remove excess ions and neurotransmitters from areas surrounding neurons.

produce growth factors for neurons

guide neurons into position during embryogenesis Question 13: What is the function of divergent neuronal circuits in the nervous system?

Answer:

To amplify impulses.

Question 14: What will trigger the opening of chemically gated ion channels?

Answer:

binding of neurotransmitter molecules Question 15: Most cells are negatively charged on the inside but have a positively charged extracellular space outside. This difference in charges is called ______.

Answer:

polarity Question 16: The two main divisions of the nervous system are the _____ nervous system and the _____ nervous system.

Answer:

central; peripheral Question 17: The water molecule shows ______ because it has negatively-charged regions in the vicinity of the oxygen atom and positively-charged regions near the hydrogen atoms.

Answer:

polarity

Question 18: Which prefix means "two"?

Answer:

Bi-

Question 19: Thinking, learning, and regulating movement are functions of which organ system?

Answer:

Nervous Question 20: An excitatory postsynaptic potential (EPSP) occurs when neurotransmitters bind to their receptors and open chemically-gated ______ channels.

Answer:

sodium Question 21: A molecule acting as a(n) _____ will alter the release of neurotransmitters or alter the response of the postsynaptic neuron to the neurotransmitter.

Answer:

neuromodulator Question 22: The neurotransmitter released at neuromuscular junctions, stimulating skeletal muscle contraction, is _____.

Answer:

acetylcholine Question 23: Neurons are ______, meaning they respond to changes in their surroundings with changes in their membrane potential.

Answer:

excitable Question 24: A molecWhen one neuron synapses with several other neurons, this is a ______ circuit.

Answer:

diverging Question 25: The term indicating that charges are likely to move across the cell membrane is membrane _____.

Answer:

potential