Question 1

Presynaptic vesicles are located in the ________.

Accepted Answer

A) axon hillocks 
B) neurofibrils 
C) axon terminals 
D) telodendria 
A) axon hillocks 
B) neurofibrils 
C) axon terminals 
D) telodendria C

Question 2

-The cell body is marked by letter ________.

Accepted Answer

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

Question 3

Both astrocytes and microglial cells have cytoplasm extensions. Explain how you can distinguish the two types of cells microscopically.

Accepted Answer

A) Astrocytes are associated with capillaries. 
B) Microglial cells are found in the peripheral nervous system. 
C) Astrocytes cover the cell bodies of unipolar neurons. 
D) Microglial cells myelinate the axons of motor neurons. 
A) Astrocytes are associated with capillaries. 
B) Microglial cells are found in the peripheral nervous system. 
C) Astrocytes cover the cell bodies of unipolar neurons. 
D) Microglial cells myelinate the axons of motor neurons. A

Question 4

-Letter e is marking the ________.

Accepted Answer

A) perineurium 
B) endoneurium 
C) epineurium 
D) fascicle 
A) perineurium 
B) endoneurium 
C) epineurium 
D) fascicle

Question 5

If you are examining a Node of Ranvier, what part of the neuron are you immediately observing?

Accepted Answer

A) Axolemma of an axon 
B) Cell body 
C) Axon 
D) Schwann cells. 
A) Axolemma of an axon 
B) Cell body 
C) Axon 
D) Schwann cells.

Question 6

The ________ is a gateway for most sensory impulses traveling to the cerebral cortex.

Accepted Answer

A) sensory neuron 
B) visual association area 
C) effector 
D) thalamus 
A) sensory neuron 
B) visual association area 
C) effector 
D) thalamus

Question 7

-Letter b is marking the ________.

Accepted Answer

A) fascicle 
B) neurofibrils 
C) node of Ranvier 
D) telodendria 
A) fascicle 
B) neurofibrils 
C) node of Ranvier 
D) telodendria

Question 8

If a neurotransmitter fails to bind to receptors on the motor end plate, which of the following events would be the first one to fail to occur?

Accepted Answer

A) Ligand-gated sodium channels would not open. 
B) Calcium ions would not enter the axon terminal. 
C) Sodium ions would not enter the postsynaptic neuron. 
D) A postsynaptic action potential would not be triggered. 
A) Ligand-gated sodium channels would not open. 
B) Calcium ions would not enter the axon terminal. 
C) Sodium ions would not enter the postsynaptic neuron. 
D) A postsynaptic action potential would not be triggered.

Question 9

-Which labeled structure marks the axon terminals?

Accepted Answer

A) J 
B) A 
C) D 
D) G 
A) J 
B) A 
C) D 
D) G

Question 10

What neurotransmitter is released at the neuromuscular junction?

Accepted Answer

A) Serotonin 
B) Acetylcholine 
C) Epinephrine 
D) Calcium 
A) Serotonin 
B) Acetylcholine 
C) Epinephrine 
D) Calcium

Question 11

Which two factors or structures increase the speed of nerve impulse conduction?

Accepted Answer

A) Graded conduction and saltatory conduction 
B) Myelin sheath and location of axon hillock 
C) Myelin sheath and graded conduction 
D) Myelin sheath and saltatory conduction 
A) Graded conduction and saltatory conduction 
B) Myelin sheath and location of axon hillock 
C) Myelin sheath and graded conduction 
D) Myelin sheath and saltatory conduction

Question 12

Which of the following will you find in a dorsal root ganglion?

Accepted Answer

A) Satellite cells 
B) Schwann cells 
C) Multipolar neuron cell bodies 
D) Bipolar neuron cell bodies 
A) Satellite cells 
B) Schwann cells 
C) Multipolar neuron cell bodies 
D) Bipolar neuron cell bodies

Question 13

-Which labeled structure marks the neurofibrils?

Accepted Answer

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

Question 14

A neuroglial cell ________.

Accepted Answer

A) supports neurons 
B) conducts electrical impulses along axons 
C) receives electrical impulses from sensory organs 
D) conducts electrical impulses between neurons 
A) supports neurons 
B) conducts electrical impulses along axons 
C) receives electrical impulses from sensory organs 
D) conducts electrical impulses between neurons

Question 15

Following the components of a neural pathway, which event would occur first?

Accepted Answer

A) Transmission of the electrical impulse to the effector organ 
B) Transduction of the stimulus into an electrical impulse 
C) Transduction of the electrical impulse from the thalamus to precentral gyrus 
D) Transmission of the electrical impulse to the thalamus 
A) Transmission of the electrical impulse to the effector organ 
B) Transduction of the stimulus into an electrical impulse 
C) Transduction of the electrical impulse from the thalamus to precentral gyrus 
D) Transmission of the electrical impulse to the thalamus

Question 16

-Which labeled structure marks the nodes of Ranvier?

Accepted Answer

A) J 
B) K 
C) I 
D) H 
A) J 
B) K 
C) I 
D) H

Question 17

Predict what you would find after removing the epineurium of a peripheral nerve.

Accepted Answer

A) Multiple fascicles each covered by an perineurium 
B) Multiple fascicles covered by an endoneurium 
C) Multiple axons each covered by an endoneurium. 
D) Schwann cells 
A) Multiple fascicles each covered by an perineurium 
B) Multiple fascicles covered by an endoneurium 
C) Multiple axons each covered by an endoneurium. 
D) Schwann cells

Question 18

A chemical messenger is also called a ________.

Accepted Answer

A) calcium channel 
B) receptor 
C) neurotransmitter 
D) myelin sheath 
A) calcium channel 
B) receptor 
C) neurotransmitter 
D) myelin sheath

Question 19

Which statement is the most likely if drug X has a stimulatory effect at a synapse?

Accepted Answer

A) Drug X opens chloride channels on the postsynaptic membrane. 
B) Drug X opens potassium channels on the postsynaptic membrane 
C) Drug X opens sodium channels on the postsynaptic membrane. 
D) Drug X causes hyperpoloarization of the postsynaptic membrane. 
A) Drug X opens chloride channels on the postsynaptic membrane. 
B) Drug X opens potassium channels on the postsynaptic membrane 
C) Drug X opens sodium channels on the postsynaptic membrane. 
D) Drug X causes hyperpoloarization of the postsynaptic membrane.

Question 20

-Which labeled structure marks the axon hillock?

Accepted Answer

A) F 
B) H 
C) E 
D) G 
A) F 
B) H 
C) E 
D) G

Exam 14: Introduction to the Nervous System

Presynaptic vesicles are located in the ________.

-The cell body is marked by letter ________.

Both astrocytes and microglial cells have cytoplasm extensions. Explain how you can distinguish the two types of cells microscopically.

-Letter e is marking the ________.

If you are examining a Node of Ranvier, what part of the neuron are you immediately observing?

The ________ is a gateway for most sensory impulses traveling to the cerebral cortex.

-Letter b is marking the ________.

If a neurotransmitter fails to bind to receptors on the motor end plate, which of the following events would be the first one to fail to occur?

-Which labeled structure marks the axon terminals?

What neurotransmitter is released at the neuromuscular junction?

Which two factors or structures increase the speed of nerve impulse conduction?

Which of the following will you find in a dorsal root ganglion?

-Which labeled structure marks the neurofibrils?

A neuroglial cell ________.

Following the components of a neural pathway, which event would occur first?

-Which labeled structure marks the nodes of Ranvier?

Predict what you would find after removing the epineurium of a peripheral nerve.

A chemical messenger is also called a ________.

Which statement is the most likely if drug X has a stimulatory effect at a synapse?

-Which labeled structure marks the axon hillock?

Introduction to Anatomy and Physiology

Introduction to the Organ Systems

Chemistry

The Microscope

The Cell

Histology

The Integumentary System

Introduction to the Skeletal System

The Axial Skeleton

The Appendicular Skeleton

Joints

Introduction to the Muscular System: Muscle Tissue

Gross Anatomy of the Muscular System

The Central Nervous System: Brain and Spinal Cord

The Peripheral Nervous System: Nerves and Autonomic Nervous System

General and Special Senses

The Endocrine System

Blood

Anatomy of the Heart

Physiology of the Heart

Anatomy of Blood Vessels

Circulatory Pathways and the Physiology of Blood Vessels

The Lymphatic System

Anatomy of the Respiratory System

Physiology of the Respiratory System

Anatomy of the Digestive System

Physiology of the Digestive System

Anatomy of the Urinary System

Physiology of the Urinary System

Reproductive and Development

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