Question 1

Third-order neurons:

Accepted Answer

A)  have axons that end in the thalamus. 
B)  carry nerve impulses from the spinal cord and brain stem to the thalamus. 
C)  have axons that decussate in the spinal cord or brain stem. 
D)  carry nerve impulses to the primary somatosensory area in the postcentral gyrus. 
A)  have axons that end in the thalamus. 
B)  carry nerve impulses from the spinal cord and brain stem to the thalamus. 
C)  have axons that decussate in the spinal cord or brain stem. 
D)  carry nerve impulses to the primary somatosensory area in the postcentral gyrus.

Question 2

Select the best description for the function of the tectospinal tract:

Accepted Answer

A)  impulses for coordination of movements of the trunk and proximal parts of the limbs 
B)  impulses that move the head and eyes in response to visual or auditory stimuli 
C)  conveys nerve impulses from motor cortex to skeletal muscles of head and neck to coordinate precise, voluntary movements 
D)  impulses for subconscious proprioception 
E)  impulses for precise voluntary movements of the hands and feet 
A)  impulses for coordination of movements of the trunk and proximal parts of the limbs 
B)  impulses that move the head and eyes in response to visual or auditory stimuli 
C)  conveys nerve impulses from motor cortex to skeletal muscles of head and neck to coordinate precise, voluntary movements 
D)  impulses for subconscious proprioception 
E)  impulses for precise voluntary movements of the hands and feet

Question 3

Which of the following is classified as a special sense?

Accepted Answer

A)  touch 
B)  pain 
C)  equilibrium 
D)  vibration 
A)  touch 
B)  pain 
C)  equilibrium 
D)  vibration

Question 4

Identifying a paper clip by feeling it or reading Braille are both examples of stereognosis.

Accepted Answer

A) True 
 B)False

Question 5

Make a diagram showing the locations of the neuronal components of the anterolateral (spinothalamic) pathways and describe the functions of the pathways.

Accepted Answer

See Fig. 2

Question 6

The group of tracts called the lateral corticospinal tracts, anterior corticospinal tracts, and corticobulbar tracts:

Accepted Answer

A)  are the direct motor pathways. 
B)  are the anterolateral pathways. 
C)  are the indirect motor pathways. 
D)  are the direct and indirect motor pathways. 
A)  are the direct motor pathways. 
B)  are the anterolateral pathways. 
C)  are the indirect motor pathways. 
D)  are the direct and indirect motor pathways.

Question 7

Modality of receptors refers to the fact that a receptor will only respond if a stimulus is of sufficient strength.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following cutaneous receptors are responsible for fine touch? 
1) type I cutaneous mechanoreceptors
2) end organs of Ruffini
3) type II cutaneous mechanoreceptors
4) corpuscles of touch (Meissner corpuscles)

Accepted Answer

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

Question 9

Deep somatic pain arises from stimulation of _____ in skeletal muscles and joints.

Accepted Answer

A)  proprioceptors 
B)  nociceptors 
C)  photoreceptors 
D)  thermoreceptors 
E)  osmoreceptors 
A)  proprioceptors 
B)  nociceptors 
C)  photoreceptors 
D)  thermoreceptors 
E)  osmoreceptors

Question 10

Sudoriferous (sweat) glands of the integument would receive motor innervation carried in which spinal cord tract?

Accepted Answer

A)  lateral corticospinal 
B)  anterior corticospinal 
C)  lateral spinothalamic 
D)  None of these choices 
A)  lateral corticospinal 
B)  anterior corticospinal 
C)  lateral spinothalamic 
D)  None of these choices

Question 11

Bradykinesia, hypokinesia, tremor, and increased muscle tone are all symptoms of Parkinson's disease.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following proprioceptors contain dendrites of slowly adapting sensory neurons? 
1) muscle spindles
2) tendon organs
3) joint kinesthetic receptors

Accepted Answer

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

Question 13

The anterior corticospinal tracts cross over to the opposite side at the level of the medulla oblongata.

Accepted Answer

A) True 
 B)False

Question 14

The receptors for pain, temperature, itch and tickle are all free nerve endings.

Accepted Answer

A) True 
 B)False

Question 15

Proprioception is the sense that provides an awareness of body positions and movements of parts of the body.

Accepted Answer

A) True 
 B)False

Question 16

Stimulation of nociceptors in the skin gives rise to superficial somatic pain.

Accepted Answer

A) True 
 B)False

Question 17

Discuss the structure, location, and functions of the three main types of proprioceptors.

Accepted Answer

Table 20.2 summarize

Question 18

Lower motor neurons that carry information from the CNS to skeletal muscle fibers form the _____.

Accepted Answer

A)  final common pathway 
B)  medial lemniscus pathway 
C)  corticobulbar pathway 
D)  anterolateral pathway 
A)  final common pathway 
B)  medial lemniscus pathway 
C)  corticobulbar pathway 
D)  anterolateral pathway

Question 19

There are two destinations in the brain for proprioceptive information: the hypothalamus and the brainstem

Accepted Answer

A) True 
 B)False

Question 20

Somatic afferent fibers relaying information regarding the position of the ankle joint _____.

Accepted Answer

A)  travel in the lateral corticospinal tract 
B)  travel in the anterior corticospinal tract 
C)  synapse in the gracile nucleus of the medulla 
D)  do NOT synapse in the thalamus 
A)  travel in the lateral corticospinal tract 
B)  travel in the anterior corticospinal tract 
C)  synapse in the gracile nucleus of the medulla 
D)  do NOT synapse in the thalamus

Exam 20: Somatic Senses and Motor Control

Third-order neurons:

Select the best description for the function of the tectospinal tract:

Which of the following is classified as a special sense?

Identifying a paper clip by feeling it or reading Braille are both examples of stereognosis.

Make a diagram showing the locations of the neuronal components of the anterolateral (spinothalamic) pathways and describe the functions of the pathways.

The group of tracts called the lateral corticospinal tracts, anterior corticospinal tracts, and corticobulbar tracts:

Modality of receptors refers to the fact that a receptor will only respond if a stimulus is of sufficient strength.

Which of the following cutaneous receptors are responsible for fine touch? 1) type I cutaneous mechanoreceptors 2) end organs of Ruffini 3) type II cutaneous mechanoreceptors 4) corpuscles of touch (Meissner corpuscles)

Deep somatic pain arises from stimulation of _____ in skeletal muscles and joints.

Sudoriferous (sweat) glands of the integument would receive motor innervation carried in which spinal cord tract?

Bradykinesia, hypokinesia, tremor, and increased muscle tone are all symptoms of Parkinson's disease.

Which of the following proprioceptors contain dendrites of slowly adapting sensory neurons? 1) muscle spindles 2) tendon organs 3) joint kinesthetic receptors

The anterior corticospinal tracts cross over to the opposite side at the level of the medulla oblongata.

The receptors for pain, temperature, itch and tickle are all free nerve endings.

Proprioception is the sense that provides an awareness of body positions and movements of parts of the body.

Stimulation of nociceptors in the skin gives rise to superficial somatic pain.

Discuss the structure, location, and functions of the three main types of proprioceptors.

Lower motor neurons that carry information from the CNS to skeletal muscle fibers form the _____.

There are two destinations in the brain for proprioceptive information: the hypothalamus and the brainstem

Somatic afferent fibers relaying information regarding the position of the ankle joint _____.

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

Filters