Question 1

Which of the following could happen to the neurotransmitter once it binds to the receiving membrane receptors?

Accepted Answer

A) reabsorbed by the sending membrane 
B) absorbed by the receiving membrane in order to start the action potential 
C) stays bound to the receiving membrane 
D) released back into the synaptic cleft where it builds up 
E) degrades due to lack of Ca+ 
A) reabsorbed by the sending membrane 
B) absorbed by the receiving membrane in order to start the action potential 
C) stays bound to the receiving membrane 
D) released back into the synaptic cleft where it builds up 
E) degrades due to lack of Ca+ A

Question 2

Depolarization of the neuron occurs when

Accepted Answer

A) the potassium gates open and potassium moves outside the cell. 
B) the sodium-potassium pump moves sodium inside the cell. 
C) sodium gates open and sodium moves inside the cell. 
D) the sodium-potassium pumps moves potassium inside the cell. 
E) water moves to the outside of the cell and chloride ions follow. 
A) the potassium gates open and potassium moves outside the cell. 
B) the sodium-potassium pump moves sodium inside the cell. 
C) sodium gates open and sodium moves inside the cell. 
D) the sodium-potassium pumps moves potassium inside the cell. 
E) water moves to the outside of the cell and chloride ions follow. C

Question 3

The action potential in a neuron is an all-or-nothing event.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following parts of a neuron is correctly matched?

Accepted Answer

A) cell body-short extensions that receive impulses 
B) axon-conducts nerve impulses 
C) dendrite-contains the nucleus and other organelles 
D) axon-contains the nucleus and other organelles 
E) dendrite-conducts nerve impulses 
A) cell body-short extensions that receive impulses 
B) axon-conducts nerve impulses 
C) dendrite-contains the nucleus and other organelles 
D) axon-contains the nucleus and other organelles 
E) dendrite-conducts nerve impulses

Question 5

What ensures the one-way direction of an action potential?

Accepted Answer

A) As soon as the action potential has passed by,that portion of the axon undergoes a short refractory period. 
B) Action potentials are self-propagating. 
C) Conduction of an action potential is an all-or-none event. 
D) An action potential at one node causes an action potential at the next node. 
E) An axon can conduct a volley of action potentials very quickly. 
A) As soon as the action potential has passed by,that portion of the axon undergoes a short refractory period. 
B) Action potentials are self-propagating. 
C) Conduction of an action potential is an all-or-none event. 
D) An action potential at one node causes an action potential at the next node. 
E) An axon can conduct a volley of action potentials very quickly.

Question 6

The repeated use of which drug leads to the body decreasing the natural production of endorphins?

Accepted Answer

A) heroin 
B) marijuana 
C) K2 
D) methamphetamine 
E) ecstasy 
A) heroin 
B) marijuana 
C) K2 
D) methamphetamine 
E) ecstasy

Question 7

Place the following steps in the correct order for a reflex arc.1.Sensory neurons pass signals to interneurons.2.Nerve signals travel along motor fibers to an effector.3.Sensory receptors generate nerve signals.4.Interneurons synapse with motor neurons.5.There is a response to the stimulus.

Accepted Answer

A) 3,4,1,2,5 
B) 2,1,3,4,5 
C) 1,2,3,4,5 
D) 3,1,4,2,5 
E) 2,4,1,3,5 
A) 3,4,1,2,5 
B) 2,1,3,4,5 
C) 1,2,3,4,5 
D) 3,1,4,2,5 
E) 2,4,1,3,5

Question 8

Wernicke's area is associated with

Accepted Answer

A) reflex centers for controlling heartbeat. 
B) sexual arousal. 
C) the ability to ride a bike. 
D) the sense of smell. 
E) the ability to speak. 
A) reflex centers for controlling heartbeat. 
B) sexual arousal. 
C) the ability to ride a bike. 
D) the sense of smell. 
E) the ability to speak.

Question 9

The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier.

Accepted Answer

A) True 
 B)False

Question 10

The left hemisphere of the brain is more involved in verbal functions than the right hemisphere.

Accepted Answer

A) True 
 B)False

Question 11

The central nervous system is protected by

Accepted Answer

A) bone. 
B) muscle. 
C) fibrous cartilage. 
D) hyaline cartilage. 
E) elastic cartilagE. 
A) bone. 
B) muscle. 
C) fibrous cartilage. 
D) hyaline cartilage. 
E) elastic cartilagE.

Question 12

Which of the following statements about cranial nerves is not true?

Accepted Answer

A) Humans have 31 pairs of cranial nerves. 
B) The cranial nerves are referred to by roman numerals. 
C) Some cranial nerves are only sensory nerves,while some are only motor fibers.Others are mixed. 
D) Cranial nerves are largely associated with the head,neck,and face. 
E) The vagus nerve is a cranial nervE. 
A) Humans have 31 pairs of cranial nerves. 
B) The cranial nerves are referred to by roman numerals. 
C) Some cranial nerves are only sensory nerves,while some are only motor fibers.Others are mixed. 
D) Cranial nerves are largely associated with the head,neck,and face. 
E) The vagus nerve is a cranial nervE.

Question 13

List the order of events that will occur during a reflex arc.

Accepted Answer

1.A sensation causes the sensory recepto

Question 14

Long term use of heroin results in which set of symptoms?

Accepted Answer

A) weight gain,poor cognitive performance,irritability 
B) cardiac and/or respiratory arrest,sudden death 
C) apathy,euphoria,hallucinations 
D) addiction,hepatitis,HIV/AIDS,various bacterial infections 
E) anxiety,jitters,insomnia,headaches 
A) weight gain,poor cognitive performance,irritability 
B) cardiac and/or respiratory arrest,sudden death 
C) apathy,euphoria,hallucinations 
D) addiction,hepatitis,HIV/AIDS,various bacterial infections 
E) anxiety,jitters,insomnia,headaches

Question 15

The spinal cord extends from the base of the brain through a large opening in the skull called the inferior ventricle.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements is not true concerning acetylcholine's function?

Accepted Answer

A) Acetylcholine has an excitatory effect on smooth muscle and glands. 
B) Acetylcholine is active in both the CNS and PNS. 
C) In the PNS,acetylcholine excites skeletal muscle. 
D) In the PNS,acetylcholine inhibits cardiac muscle. 
E) The enzyme acetylcholinesterase removes acetylcholine from the receiving cell's membranE. 
A) Acetylcholine has an excitatory effect on smooth muscle and glands. 
B) Acetylcholine is active in both the CNS and PNS. 
C) In the PNS,acetylcholine excites skeletal muscle. 
D) In the PNS,acetylcholine inhibits cardiac muscle. 
E) The enzyme acetylcholinesterase removes acetylcholine from the receiving cell's membranE.

Question 17

Which of the following statements is not true concerning spinal nerves?

Accepted Answer

A) The ventral root contains motor fibers exiting the gray matter. 
B) The dorsal root contains sensory fibers entering the gray matter. 
C) Spinal nerves are considered part of the CNS. 
D) The dorsal and ventral roots join before the spinal nerve leaves the vertebral canal. 
E) The spinal nerves project from the cord through intervertebral foramina. 
A) The ventral root contains motor fibers exiting the gray matter. 
B) The dorsal root contains sensory fibers entering the gray matter. 
C) Spinal nerves are considered part of the CNS. 
D) The dorsal and ventral roots join before the spinal nerve leaves the vertebral canal. 
E) The spinal nerves project from the cord through intervertebral foramina.

Question 18

Which drug is in the same category as nicotine?

Accepted Answer

A) cocaine 
B) alcohol 
C) heroin 
D) marijuana 
E) none of these 
A) cocaine 
B) alcohol 
C) heroin 
D) marijuana 
E) none of these

Question 19

Which part of the brain is not functioning correctly if an individual cannot learn new facts and retain them?

Accepted Answer

A) hippocampus 
B) amygdala 
C) reticular formation 
D) medulla oblongata 
E) none of these 
A) hippocampus 
B) amygdala 
C) reticular formation 
D) medulla oblongata 
E) none of these

Question 20

Which of the following types of nerves is not covered by a protective myelin sheath?

Accepted Answer

A) long axons 
B) gray matter of the CNS 
C) white matter of the CNS 
D) nerve fibers within the PNS 
E) axons of the CNS 
A) long axons 
B) gray matter of the CNS 
C) white matter of the CNS 
D) nerve fibers within the PNS 
E) axons of the CNS

Exam 14: Nervous System

Which of the following could happen to the neurotransmitter once it binds to the receiving membrane receptors?

Depolarization of the neuron occurs when

The action potential in a neuron is an all-or-nothing event.

Which of the following parts of a neuron is correctly matched?

What ensures the one-way direction of an action potential?

The repeated use of which drug leads to the body decreasing the natural production of endorphins?

Place the following steps in the correct order for a reflex arc.1.Sensory neurons pass signals to interneurons.2.Nerve signals travel along motor fibers to an effector.3.Sensory receptors generate nerve signals.4.Interneurons synapse with motor neurons.5.There is a response to the stimulus.

Wernicke's area is associated with

The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier.

The left hemisphere of the brain is more involved in verbal functions than the right hemisphere.

The central nervous system is protected by

Which of the following statements about cranial nerves is not true?

List the order of events that will occur during a reflex arc.

Long term use of heroin results in which set of symptoms?

The spinal cord extends from the base of the brain through a large opening in the skull called the inferior ventricle.

Which of the following statements is not true concerning acetylcholine's function?

Which of the following statements is not true concerning spinal nerves?

Which drug is in the same category as nicotine?

Which part of the brain is not functioning correctly if an individual cannot learn new facts and retain them?

Which of the following types of nerves is not covered by a protective myelin sheath?

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