Question 1

After acetylcholinesterase acts, the synaptic knob

Accepted Answer

A)  reabsorbs the choline. 
B)  reabsorbs the acetylcholine. 
C)  reabsorbs the acetate. 
D)  all of the above 
E)  both B and C 
A)  reabsorbs the choline. 
B)  reabsorbs the acetylcholine. 
C)  reabsorbs the acetate. 
D)  all of the above 
E)  both B and C

Question 2

Each of the following is an example of a neuroeffector junction, except the junction between a neuron and an)

Accepted Answer

A)  endocrine gland cell. 
B)  smooth muscle cell. 
C)  nerve cell. 
D)  skeletal muscle cell. 
E)  exocrine gland cell. 
A)  endocrine gland cell. 
B)  smooth muscle cell. 
C)  nerve cell. 
D)  skeletal muscle cell. 
E)  exocrine gland cell.

Question 3

Deteriorating changes in the distal segment of an axon as a result of a break between it and the soma is called _______ degeneration.

Accepted Answer

A)  Wallerian 
B)  peripheral 
C)  central 
D)  neural 
E)  conduction 
A)  Wallerian 
B)  peripheral 
C)  central 
D)  neural 
E)  conduction

Question 4

EPSPs excitatory postsynaptic potentials) occur when

Accepted Answer

A)  more calcium ions than usual leak out of a cell. 
B)  chloride ions enter a cell. 
C)  hyperpolarizations occur. 
D)  more potassium ions than usual leak out of a cell. 
E)  extra sodium ions enter a cell. 
A)  more calcium ions than usual leak out of a cell. 
B)  chloride ions enter a cell. 
C)  hyperpolarizations occur. 
D)  more potassium ions than usual leak out of a cell. 
E)  extra sodium ions enter a cell.

Question 5

An action potential traveling along an axon is also called an) ________ _

Accepted Answer

The answer of An action potential traveling along an axon...

Question 6

During fetal development and early childhood, the free surface of ependymal cells is covered with___________ .

Accepted Answer

The answer of During fetal development and early childhood, the...

Question 7

Which of the following is the most important excitatory neurotransmitter in the brain?

Accepted Answer

A)  glutamate 
B)  glycine 
C)  serotonin 
D)  noradrenaline 
E)  gamma aminobutyric acid 
A)  glutamate 
B)  glycine 
C)  serotonin 
D)  noradrenaline 
E)  gamma aminobutyric acid

Question 8

Regions of the CNS where neuron cell bodies dominate constitute the____________matter.

Accepted Answer

The answer of Regions of the CNS where neuron cell...

Question 9

In the process of saltatory action potential propagation,

Accepted Answer

A)  the action potential is triggered by graded depolarization of the initial segment. 
B)  at threshold, sodium channels begin to open rapidly. 
C)  local currents depolarize the region just adjacent to the active zone. 
D)  local currents depolarize a sensitive spot distant from the active zone. 
E)  A, B, and D 
A)  the action potential is triggered by graded depolarization of the initial segment. 
B)  at threshold, sodium channels begin to open rapidly. 
C)  local currents depolarize the region just adjacent to the active zone. 
D)  local currents depolarize a sensitive spot distant from the active zone. 
E)  A, B, and D

Question 10

Summation that results from the cumulative effect of multiple synapses at multiple places on the neuron is designated

Accepted Answer

A)  spatial summation. 
B)  inhibition of the impulse. 
C)  temporal summation. 
D)  hyperpolarization. 
E)  impulse transmission. 
A)  spatial summation. 
B)  inhibition of the impulse. 
C)  temporal summation. 
D)  hyperpolarization. 
E)  impulse transmission.

Question 11

Products from the soma of a neuron are transported to the synaptic terminals by___________axoplasmic transport.

Accepted Answer

The answer of Products from the soma of a neuron...

Question 12

Which of the following is not a possible drug effect on synaptic function?

Accepted Answer

A)  block neurotransmitter binding to receptors 
B)  change the type of receptor found in the postsynaptic membrane 
C)  interfere with neurotransmitter synthesis 
D)  interfere with neurotransmitter reuptake 
E)  prevent neurotransmitter inactivation 
A)  block neurotransmitter binding to receptors 
B)  change the type of receptor found in the postsynaptic membrane 
C)  interfere with neurotransmitter synthesis 
D)  interfere with neurotransmitter reuptake 
E)  prevent neurotransmitter inactivation

Question 13

The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus, is the_____________ .

Accepted Answer

relative r

Question 14

Opening of sodium channels in the axon membrane causes

Accepted Answer

A)  depolarization. 
B)  hyperpolarization. 
C)  repolarization. 
D)  increased positive charge inside the membrane. 
E)  both A and D 
A)  depolarization. 
B)  hyperpolarization. 
C)  repolarization. 
D)  increased positive charge inside the membrane. 
E)  both A and D

Question 15

Voltage- gated channels are present

Accepted Answer

A)  at the motor end plate. 
B)  on the surface of dendrites. 
C)  in the membrane that covers axons. 
D)  along the perikaryon of neurons. 
E)  on the soma of neurons. 
A)  at the motor end plate. 
B)  on the surface of dendrites. 
C)  in the membrane that covers axons. 
D)  along the perikaryon of neurons. 
E)  on the soma of neurons.

Question 16

Figure 11- 1 The Neuron
Use Figure 11- 1 to answer the following questions:
-Which part of the neuron can conduct an action potential?

Accepted Answer

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

Question 17

The effect that a neurotransmitter has on the postsynaptic membrane depends on

Accepted Answer

A)  the nature of the neurotransmitter. 
B)  the frequency of neurotransmitter release. 
C)  the characteristics of the receptors. 
D)  the quantity of neurotransmitters released. 
E)  all of the above 
A)  the nature of the neurotransmitter. 
B)  the frequency of neurotransmitter release. 
C)  the characteristics of the receptors. 
D)  the quantity of neurotransmitters released. 
E)  all of the above

Question 18

Figure 11- 1 The Neuron
Use Figure 11- 1 to answer the following questions:
-The structure labeled "2" is a

Accepted Answer

A)  Nissl body. 
B)  soma. 
C)  perikaryon. 
D)  dendrite. 
E)  initial segment. 
A)  Nissl body. 
B)  soma. 
C)  perikaryon. 
D)  dendrite. 
E)  initial segment.

Question 19

A movement of charges in response to a potential difference is called a__________.

Accepted Answer

The answer of A movement of charges in response to...

Question 20

Which of the following is true about threshold for an action potential?

Accepted Answer

A)  It is more positive than the resting potential. 
B)  Voltage- gated potassium channels begin to close. 
C)  Voltage- gated sodium channels begin to open. 
D)  A and C only 
E)  A, B, and C 
A)  It is more positive than the resting potential. 
B)  Voltage- gated potassium channels begin to close. 
C)  Voltage- gated sodium channels begin to open. 
D)  A and C only 
E)  A, B, and C

Exam 11: Neural Tissue

After acetylcholinesterase acts, the synaptic knob

Each of the following is an example of a neuroeffector junction, except the junction between a neuron and an)

Deteriorating changes in the distal segment of an axon as a result of a break between it and the soma is called _______ degeneration.

EPSPs excitatory postsynaptic potentials) occur when

An action potential traveling along an axon is also called an) ________ _

During fetal development and early childhood, the free surface of ependymal cells is covered with___________ .

Which of the following is the most important excitatory neurotransmitter in the brain?

Regions of the CNS where neuron cell bodies dominate constitute the____________matter.

In the process of saltatory action potential propagation,

Summation that results from the cumulative effect of multiple synapses at multiple places on the neuron is designated

Products from the soma of a neuron are transported to the synaptic terminals by___________axoplasmic transport.

Which of the following is not a possible drug effect on synaptic function?

The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus, is the_____________ .

Opening of sodium channels in the axon membrane causes

Voltage- gated channels are present

Figure 11- 1 The Neuron Use Figure 11- 1 to answer the following questions: -Which part of the neuron can conduct an action potential?

The effect that a neurotransmitter has on the postsynaptic membrane depends on

Figure 11- 1 The Neuron Use Figure 11- 1 to answer the following questions: -The structure labeled "2" is a

A movement of charges in response to a potential difference is called a__________.

Which of the following is true about threshold for an action potential?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Skeleton

Articulations

Muscle Tissue

The Muscular System

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

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