Question 1

We can localize sensations that originate in different areas of the body because

Accepted Answer

A) sensory neurons carry only one modality. 
B) sensory neurons from specific body regions project to specific cortical regions. 
C) incoming sensory information is first processed by the thalamus. 
D) different types of sensory receptors produce action potentials of different sizes and shapes. 
E) of the many types of tactile receptors. 
A) sensory neurons carry only one modality. 
B) sensory neurons from specific body regions project to specific cortical regions. 
C) incoming sensory information is first processed by the thalamus. 
D) different types of sensory receptors produce action potentials of different sizes and shapes. 
E) of the many types of tactile receptors. B

Question 2

In the corticospinal pathway,the neuron that exits the spinal cord and enters the spinal nerve is called the ________ neuron.

Accepted Answer

A) upper sensory 
B) lower sensory 
C) upper motor 
D) lower motor 
E) pyramidal 
A) upper sensory 
B) lower sensory 
C) upper motor 
D) lower motor 
E) pyramidal D

Question 3

Which of the following is not one of the special senses?

Accepted Answer

A) hearing 
B) smell 
C) taste 
D) pressure 
E) vision 
A) hearing 
B) smell 
C) taste 
D) pressure 
E) vision D

Question 4

Tactile discs are to ________ as tactile corpuscles are to ________.

Accepted Answer

A) Wilms; Meissner 
B) Merkel; Meissner 
C) Meissner; Merkel 
D) Pacinian; Merkel 
E) pain; pressure 
A) Wilms; Meissner 
B) Merkel; Meissner 
C) Meissner; Merkel 
D) Pacinian; Merkel 
E) pain; pressure

Question 5

The spinal tract that normally plays a role in the subconscious regulation of the muscles of the arms is the ________ tract.

Accepted Answer

A) lateral corticospinal 
B) anterior corticospinal 
C) rubrospinal 
D) reticulospinal 
E) vestibulospinal 
A) lateral corticospinal 
B) anterior corticospinal 
C) rubrospinal 
D) reticulospinal 
E) vestibulospinal

Question 6

Which of the following statements is true about general senses?

Accepted Answer

A) They are distributed all over the body. 
B) They are all mechanoreceptors. 
C) Receptors involved in general sensation consist of naked nerve endings. 
D) They are located in sense organs. 
E) The reception of the stimulus occurs slowly with these receptors. 
A) They are distributed all over the body. 
B) They are all mechanoreceptors. 
C) Receptors involved in general sensation consist of naked nerve endings. 
D) They are located in sense organs. 
E) The reception of the stimulus occurs slowly with these receptors.

Question 7

The upper motor neurons of the medial pathway are located within any of the following except the

Accepted Answer

A) vestibular nuclei. 
B) reticular formation. 
C) superior colliculi. 
D) inferior colliculi. 
E) mamillary bodies. 
A) vestibular nuclei. 
B) reticular formation. 
C) superior colliculi. 
D) inferior colliculi. 
E) mamillary bodies.

Question 8

A very large,fast-adapting tactile receptor that is composed of a single dendrite enclosed by concentric layers of collagen is a

Accepted Answer

A) Ruffini corpuscle. 
B) lamellated (Pacinian)corpuscle. 
C) tactile (Meissner)corpuscle. 
D) tactile (Merkel)disc. 
E) root hair plexus. 
A) Ruffini corpuscle. 
B) lamellated (Pacinian)corpuscle. 
C) tactile (Meissner)corpuscle. 
D) tactile (Merkel)disc. 
E) root hair plexus.

Question 9

Which of the following can contribute to receptor specificity?

Accepted Answer

A) the structure of the receptor cell 
B) characteristics of the receptor cell membrane 
C) accessory cells that function with the receptor 
D) accessory structures and tissues that shield the receptors from other stimuli 
E) All of the answers are correct. 
A) the structure of the receptor cell 
B) characteristics of the receptor cell membrane 
C) accessory cells that function with the receptor 
D) accessory structures and tissues that shield the receptors from other stimuli 
E) All of the answers are correct.

Question 10

Descending (motor)pathways always involve at least ________ motor neuron(s).

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) spinal 
A) one 
B) two 
C) three 
D) four 
E) spinal

Question 11

Descending tracts in the spinal cord relay ________ information.

Accepted Answer

A) sensory 
B) motor 
C) sensory and motor 
D) only somatic 
E) autonomic 
A) sensory 
B) motor 
C) sensory and motor 
D) only somatic 
E) autonomic

Question 12

The cerebellum adjusts motor activity in response to all of the following except

Accepted Answer

A) touch sensations. 
B) visual information. 
C) equilibrium-related sensations. 
D) input from the motor cortex. 
E) input from proprioceptors. 
A) touch sensations. 
B) visual information. 
C) equilibrium-related sensations. 
D) input from the motor cortex. 
E) input from proprioceptors.

Question 13

Which of the following is/are sometimes called "prickling pain"?

Accepted Answer

A) mechanical damage 
B) proprioception 
C) extremes of temperature 
D) fast pain 
E) fast and slow pain 
A) mechanical damage 
B) proprioception 
C) extremes of temperature 
D) fast pain 
E) fast and slow pain

Question 14

Gustatory receptors are sensitive to dissolved chemicals but insensitive to light.This is due to

Accepted Answer

A) receptor specificity. 
B) accessory cells. 
C) the fact that they are interoceptors. 
D) receptor potentials. 
E) receptor speciation. 
A) receptor specificity. 
B) accessory cells. 
C) the fact that they are interoceptors. 
D) receptor potentials. 
E) receptor speciation.

Question 15

The ________ is the area monitored by a single receptor cell.

Accepted Answer

A) corpuscle 
B) cortex 
C) receptor potential 
D) receptive field 
E) nerve center 
A) corpuscle 
B) cortex 
C) receptor potential 
D) receptive field 
E) nerve center

Question 16

Action potentials from receptors involved in general sensations are interpreted in the

Accepted Answer

A) premotor cortex. 
B) primary sensory cortex. 
C) general interpretive area. 
D) mesencephalon. 
E) reticular activating system. 
A) premotor cortex. 
B) primary sensory cortex. 
C) general interpretive area. 
D) mesencephalon. 
E) reticular activating system.

Question 17

A highly sensitive tactile receptor composed of dendritic processes of a single myelinated fiber that makes contact with specialized cells of the stratum germinativum (basale)is a

Accepted Answer

A) lamellated corpuscle. 
B) tactile (Meissner)corpuscle. 
C) Ruffini corpuscle. 
D) tactile (Merkel)disc. 
E) root hair plexus. 
A) lamellated corpuscle. 
B) tactile (Meissner)corpuscle. 
C) Ruffini corpuscle. 
D) tactile (Merkel)disc. 
E) root hair plexus.

Question 18

Ascending tracts in the spinal cord relay ________ information.

Accepted Answer

A) sensory 
B) motor 
C) sensory and motor 
D) only somatic 
E) autonomic 
A) sensory 
B) motor 
C) sensory and motor 
D) only somatic 
E) autonomic

Question 19

Which of the following is a property of thermoreceptors?

Accepted Answer

A) involves specialized receptors 
B) monitor heat stimuli,not cold 
C) found in skin only 
D) project to reticular formation 
E) cold receptors found around the body in small numbers 
A) involves specialized receptors 
B) monitor heat stimuli,not cold 
C) found in skin only 
D) project to reticular formation 
E) cold receptors found around the body in small numbers

Question 20

Figure 15-1 Spinothalamic Tracts
Use Figure 15-1 to answer the following questions:
-Identify the neuron labeled "3."

Accepted Answer

A) lower motor neuron 
B) upper motor neuron 
C) first-order neuron 
D) second-order neuron 
E) ganglionic neuron 
A) lower motor neuron 
B) upper motor neuron 
C) first-order neuron 
D) second-order neuron 
E) ganglionic neuron

Exam 15: Sensory Pathways and the Somatic Nervous System

We can localize sensations that originate in different areas of the body because

In the corticospinal pathway,the neuron that exits the spinal cord and enters the spinal nerve is called the ________ neuron.

Which of the following is not one of the special senses?

Tactile discs are to ________ as tactile corpuscles are to ________.

The spinal tract that normally plays a role in the subconscious regulation of the muscles of the arms is the ________ tract.

Which of the following statements is true about general senses?

The upper motor neurons of the medial pathway are located within any of the following except the

A very large,fast-adapting tactile receptor that is composed of a single dendrite enclosed by concentric layers of collagen is a

Which of the following can contribute to receptor specificity?

Descending (motor)pathways always involve at least ________ motor neuron(s).

Descending tracts in the spinal cord relay ________ information.

The cerebellum adjusts motor activity in response to all of the following except

Which of the following is/are sometimes called "prickling pain"?

Gustatory receptors are sensitive to dissolved chemicals but insensitive to light.This is due to

The ________ is the area monitored by a single receptor cell.

Action potentials from receptors involved in general sensations are interpreted in the

A highly sensitive tactile receptor composed of dendritic processes of a single myelinated fiber that makes contact with specialized cells of the stratum germinativum (basale)is a

Ascending tracts in the spinal cord relay ________ information.

Which of the following is a property of thermoreceptors?

Figure 15-1 Spinothalamic Tracts Use Figure 15-1 to answer the following questions: -Identify the neuron labeled "3."

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 Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

Tactile discs are to as tactile corpuscles are to .