Question 1

Which of the following structures is labeled E in the diagram?

Accepted Answer

A) axon terminal 
B) trigger zone 
C) cell body 
D) axon 
E) dendrites 
A) axon terminal 
B) trigger zone 
C) cell body 
D) axon 
E) dendrites

Question 2

Name the type of membrane channel that randomly opens and closes and is found in dendrites,cell bodies,and axons of all types of neurons.

Accepted Answer

A) leakage channel 
B) ligand-gated channel 
C) mechanically gated channel 
D) voltage-gated channel 
E) pressure-sensitive channel 
A) leakage channel 
B) ligand-gated channel 
C) mechanically gated channel 
D) voltage-gated channel 
E) pressure-sensitive channel

Question 3

Plasticity means

Accepted Answer

A) ability to regenerate after being damaged. 
B) sending a signal through a converging circuit. 
C) signal transmission at a synapse. 
D) ability to change based on experience. 
E) ability to stretch and recoil without damage. 
A) ability to regenerate after being damaged. 
B) sending a signal through a converging circuit. 
C) signal transmission at a synapse. 
D) ability to change based on experience. 
E) ability to stretch and recoil without damage.

Question 4

This type of nervous tissue contains neuronal cell bodies,dendrites,unmyelinated axons,axon terminals,and neuroglial cells.

Accepted Answer

A) Gray matter 
B) White matter 
C) Nissl bodies 
D) Ganglia 
E) Nuclei 
A) Gray matter 
B) White matter 
C) Nissl bodies 
D) Ganglia 
E) Nuclei

Question 5

The nervous system can distinguish between a light touch and a heavier touch by

Accepted Answer

A) saltatory conduction. 
B) continuous conduction of graded potentials. 
C) changing the frequency of impulses sent to sensory centers. 
D) propagation action potential in both directions. 
E) modifying the length of the refractory period. 
A) saltatory conduction. 
B) continuous conduction of graded potentials. 
C) changing the frequency of impulses sent to sensory centers. 
D) propagation action potential in both directions. 
E) modifying the length of the refractory period.

Question 6

Which of the following structures is labeled A in the diagram?

Accepted Answer

A) axon terminal 
B) trigger zone 
C) cell body 
D) peripheral process 
E) dendrites 
A) axon terminal 
B) trigger zone 
C) cell body 
D) peripheral process 
E) dendrites

Question 7

This part of the neuron contains the nucleus and Nissl bodies.

Accepted Answer

A) A 
B) B 
C) C 
D) E 
E) Both A and B 
A) A 
B) B 
C) C 
D) E 
E) Both A and B

Question 8

Briefly describe the events that occur during the depolarizing phase of an action potential.

Accepted Answer

Voltage-gated Na⁺ channels open rapidly a

Question 9

What is the structural classification of the neuron labeled A?

Accepted Answer

A) bipolar neuron 
B) multipolar neuron 
C) unipolar neuron 
D) nonpolar neuron 
E) pseudounipolar 
A) bipolar neuron 
B) multipolar neuron 
C) unipolar neuron 
D) nonpolar neuron 
E) pseudounipolar

Question 10

In the diagram,where is a node of Ranvier?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 11

Which of the following types of electrical signals allow rapid long-distance communication within the nervous system?

Accepted Answer

A) resting potential 
B) nerve action potential 
C) muscle action potential 
D) graded potential 
E) long-term potentiation 
A) resting potential 
B) nerve action potential 
C) muscle action potential 
D) graded potential 
E) long-term potentiation

Question 12

Schwann's cells begin to form myelin sheaths around axons in the peripheral nervous system

Accepted Answer

A) when neurons are injured. 
B) during fetal development. 
C) after birth. 
D) only in response to electrical stimulation by neuroglial cells. 
E) during the early onset of Alzheimer's disease. 
A) when neurons are injured. 
B) during fetal development. 
C) after birth. 
D) only in response to electrical stimulation by neuroglial cells. 
E) during the early onset of Alzheimer's disease.

Question 13

A depolarizing graded potential

Accepted Answer

A) makes the membrane more polarized. 
B) makes the membrane less polarized. 
C) is considered a type of action potential. 
D) is the last part of an action potential. 
E) is seen when the cell approaches threshold. 
A) makes the membrane more polarized. 
B) makes the membrane less polarized. 
C) is considered a type of action potential. 
D) is the last part of an action potential. 
E) is seen when the cell approaches threshold.

Question 14

The motor portion of the autonomic nervous system can be divided into

Accepted Answer

A) somatic and sympathetic divisions. 
B) somatic and parasympathetic divisions. 
C) enteric and somatic divisions. 
D) sympathetic and parasympathetic divisions. 
E) voluntary and involuntary divisions. 
A) somatic and sympathetic divisions. 
B) somatic and parasympathetic divisions. 
C) enteric and somatic divisions. 
D) sympathetic and parasympathetic divisions. 
E) voluntary and involuntary divisions.

Question 15

Diffusion,enzymatic degradation,and uptake by cells are all ways to

Accepted Answer

A) remove a neurotransmitter 
B) stop a spatial summation 
C) continue a temporal summation 
D) inhibit a presynaptic potential 
E) excite a presynaptic potential 
A) remove a neurotransmitter 
B) stop a spatial summation 
C) continue a temporal summation 
D) inhibit a presynaptic potential 
E) excite a presynaptic potential

Question 16

Name the type of membrane channel that opens in response to changes in membrane potential and is located in axons of all types of neurons.

Accepted Answer

A) leakage channel 
B) ligand-gated channels 
C) mechanically gated channels 
D) voltage-gated channels 
E) temperature-sensitive channel 
A) leakage channel 
B) ligand-gated channels 
C) mechanically gated channels 
D) voltage-gated channels 
E) temperature-sensitive channel

Question 17

Which type of circuit is used to lengthen the output signal in physiological processes like regulation of the breathing pattern?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 18

Which of the following is NOT a type of channel used in production of electrical signals in neurons?

Accepted Answer

A) Leakage channel 
B) Voltage-gated channel 
C) Ligand-gated channel 
D) Mechanically gated channel 
E) Ion-gated channel 
A) Leakage channel 
B) Voltage-gated channel 
C) Ligand-gated channel 
D) Mechanically gated channel 
E) Ion-gated channel

Question 19

During this period,a second action potential can only be initiated by a larger than normal stimulus

Accepted Answer

A) Latent period 
B) Absolute refractory period 
C) Relative refractory period 
D) All of these choices 
E) None of these choices 
A) Latent period 
B) Absolute refractory period 
C) Relative refractory period 
D) All of these choices 
E) None of these choices

Question 20

Which of the following structures is labeled C in the diagram?

Accepted Answer

A) axon terminal 
B) trigger zone 
C) cell body 
D) peripheral process 
E) dendrites 
A) axon terminal 
B) trigger zone 
C) cell body 
D) peripheral process 
E) dendrites

Exam 12: Nervous Tissue

Which of the following structures is labeled E in the diagram?

Name the type of membrane channel that randomly opens and closes and is found in dendrites,cell bodies,and axons of all types of neurons.

Plasticity means

This type of nervous tissue contains neuronal cell bodies,dendrites,unmyelinated axons,axon terminals,and neuroglial cells.

The nervous system can distinguish between a light touch and a heavier touch by

Which of the following structures is labeled A in the diagram?

This part of the neuron contains the nucleus and Nissl bodies.

Briefly describe the events that occur during the depolarizing phase of an action potential.

What is the structural classification of the neuron labeled A?

In the diagram,where is a node of Ranvier?

Which of the following types of electrical signals allow rapid long-distance communication within the nervous system?

Schwann's cells begin to form myelin sheaths around axons in the peripheral nervous system

A depolarizing graded potential

The motor portion of the autonomic nervous system can be divided into

Diffusion,enzymatic degradation,and uptake by cells are all ways to

Name the type of membrane channel that opens in response to changes in membrane potential and is located in axons of all types of neurons.

Which type of circuit is used to lengthen the output signal in physiological processes like regulation of the breathing pattern?

Which of the following is NOT a type of channel used in production of electrical signals in neurons?

During this period,a second action potential can only be initiated by a larger than normal stimulus

Which of the following structures is labeled C in the diagram?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System Unit Iii: Control Systems of the Human Body

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System Unit Iv: Maintenance of the Human Body

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Development and Inheritance

Filters