Question 1

Proprioceptive information may be conveyed to the cerebellum via sensory neurons that travel in spinocerebellar tracts.

Accepted Answer

A) True 
 B)False  True

Question 2

A mosquito bites you on the wrist. Even before you look at the spot, your CNS has informed you of what has happened, and where. What neuronal events have occurred between the time the insect began to bite and the moment when you became aware?

Accepted Answer

1. Stimulation: activation of sensory neurons
2. Creation of a nerve impulse in a first-order sensory neuron
3. Conduction of nerve impulse to the CNS via the first-order neuron
4. Nerve impulse reaches the region in the CNS where it is transformed into a conscious perception.

Question 3

Visceral senses and somatic senses are grouped together in the class called general senses.

Accepted Answer

A) True 
 B)False  True

Question 4

Tendon organs contain intrafusal fibers.

Accepted Answer

A) True 
 B)False

Question 5

Select the best description for the function of the lateral spinothalamic tract:

Accepted Answer

A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet 
A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet

Question 6

Select the best description for the function of the anterior and posterior spinocerebellar tracts:

Accepted Answer

A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet 
A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet

Question 7

There are two types of thermoreceptors: warm receptors in the dermis of the skin, and cold receptors located in the stratum basale of the epidermis

Accepted Answer

A) True 
 B)False

Question 8

For perception to occur, sensory nerve impulses must reach which of the following levels of the CNS?

Accepted Answer

A)  spinal cord 
B)  brain stem 
C)  thalamus 
D)  cerebral cortex 
A)  spinal cord 
B)  brain stem 
C)  thalamus 
D)  cerebral cortex

Question 9

Which groups of neurons provide input to lower motor neurons? 
1) local circuit neurons
2) upper motor neurons
3) basal nuclei neurons
4) cerebellar neurons

Accepted Answer

A)  1, 2, 3, 4 
B)  1, 3, 4 
C)  1 and 3 only 
D)  1 and 2 only 
A)  1, 2, 3, 4 
B)  1, 3, 4 
C)  1 and 3 only 
D)  1 and 2 only

Question 10

Visceral pain occurs when nociceptors in internal organs, skeletal muscles, tendons, or joints are stimulated.

Accepted Answer

A) True 
 B)False

Question 11

Upper motor neurons of the indirect pathways begin in the:

Accepted Answer

A)  cerebral cortex. 
B)  brain stem. 
C)  thalamus. 
D)  spinal cord. 
A)  cerebral cortex. 
B)  brain stem. 
C)  thalamus. 
D)  spinal cord.

Question 12

Which of the following is a sensation that is NOT carried by the spinothalamic pathways?

Accepted Answer

A)  pain 
B)  itch 
C)  tickle 
D)  proprioception 
A)  pain 
B)  itch 
C)  tickle 
D)  proprioception

Question 13

Receptors for pressure and vibration that consist of an oval multi-layered capsule surrounding a dendrite, and that are located in the skin as well as subcutaneous and submucosal tissues, are called _____.

Accepted Answer

A)  lamellated corpuscles (pacinian corpuscles) 
B)  corpuscles of touch (Meissner corpuscles) 
C)  type I cutaneous mechanoreceptors (tactile discs) 
D)  Type II cutaneous mechanoreceptors (Ruffini corpuscles) 
A)  lamellated corpuscles (pacinian corpuscles) 
B)  corpuscles of touch (Meissner corpuscles) 
C)  type I cutaneous mechanoreceptors (tactile discs) 
D)  Type II cutaneous mechanoreceptors (Ruffini corpuscles)

Question 14

Select the best description for the function of the posterior column-medial lemniscus:

Accepted Answer

A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch, and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet 
A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch, and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet

Question 15

The _____ pathway conducts impulses for conscious proprioception and most tactile sensations.

Accepted Answer

A)  anterior corticospinal 
B)  posterior column-medial lemniscus 
C)  spinothalamic 
D)  tectospinal 
A)  anterior corticospinal 
B)  posterior column-medial lemniscus 
C)  spinothalamic 
D)  tectospinal

Question 16

Select the best description for the function of the anterior spinothalamic tract:

Accepted Answer

A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet 
A)  impulses for conscious proprioception and most tactile sensations 
B)  impulses for pain and temperature sensations 
C)  impulses for itch, tickle, crude touch and pressure sensations 
D)  impulses for subconscious proprioception 
E)  impulses for coordination of precise voluntary movements of the hands and feet

Question 17

Corticobulbar tracts carry information that coordinates the voluntary movement of all of the following except:

Accepted Answer

A)  facial muscles. 
B)  eyes. 
C)  skilled movements of the hands. 
D)  muscles of speech and chewing. 
A)  facial muscles. 
B)  eyes. 
C)  skilled movements of the hands. 
D)  muscles of speech and chewing.

Question 18

The gracile fasciculus and cuneate fasciculus are found in the anterior column of the spinal cord.

Accepted Answer

A) True 
 B)False

Question 19

Gamma motor neurons are responsible for the innervation of _____ fibers of the muscle spindle.

Accepted Answer

A)  extrafusal 
B)  intrafusal 
A)  extrafusal 
B)  intrafusal

Question 20

Which of the following has encapsulated nerve endings?

Accepted Answer

A)  hair root plexus 
B)  type I cutaneous mechanoreceptor (tactile disc) 
C)  corpuscle of touch (Meissner corpuscle) 
D)  photoreceptor 
A)  hair root plexus 
B)  type I cutaneous mechanoreceptor (tactile disc) 
C)  corpuscle of touch (Meissner corpuscle) 
D)  photoreceptor

Exam 20: Somatic Senses and Motor Control

Proprioceptive information may be conveyed to the cerebellum via sensory neurons that travel in spinocerebellar tracts.

A mosquito bites you on the wrist. Even before you look at the spot, your CNS has informed you of what has happened, and where. What neuronal events have occurred between the time the insect began to bite and the moment when you became aware?

Visceral senses and somatic senses are grouped together in the class called general senses.

Tendon organs contain intrafusal fibers.

Select the best description for the function of the lateral spinothalamic tract:

Select the best description for the function of the anterior and posterior spinocerebellar tracts:

There are two types of thermoreceptors: warm receptors in the dermis of the skin, and cold receptors located in the stratum basale of the epidermis

For perception to occur, sensory nerve impulses must reach which of the following levels of the CNS?

Which groups of neurons provide input to lower motor neurons? 1) local circuit neurons 2) upper motor neurons 3) basal nuclei neurons 4) cerebellar neurons

Visceral pain occurs when nociceptors in internal organs, skeletal muscles, tendons, or joints are stimulated.

Upper motor neurons of the indirect pathways begin in the:

Which of the following is a sensation that is NOT carried by the spinothalamic pathways?

Receptors for pressure and vibration that consist of an oval multi-layered capsule surrounding a dendrite, and that are located in the skin as well as subcutaneous and submucosal tissues, are called _____.

Select the best description for the function of the posterior column-medial lemniscus:

The _____ pathway conducts impulses for conscious proprioception and most tactile sensations.

Select the best description for the function of the anterior spinothalamic tract:

Corticobulbar tracts carry information that coordinates the voluntary movement of all of the following except:

The gracile fasciculus and cuneate fasciculus are found in the anterior column of the spinal cord.

Gamma motor neurons are responsible for the innervation of _____ fibers of the muscle spindle.

Which of the following has encapsulated nerve endings?

An Introduction to the Human Body

Cells

Tissues

Development

The Integumentary System

Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic Lymphoid System and Immunity

Nervous Tissue

The Spinal Cord and the Spinal Nerves

The Brain and the Cranial Nerves

The Autonomic Nervous System

Special Senses

The Endocrine System

The Respiratory System

The Digestive System

The Urinary System

The Reproductive Systems

Surface Anatomy

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