Question 1

The ________ nervous system carries impulses to skeletal muscles.

Accepted Answer

A)  somatic 
B)  sympathetic 
C)  parasympathetic 
D)  afferent 
E)  autonomic 
A)  somatic 
B)  sympathetic 
C)  parasympathetic 
D)  afferent 
E)  autonomic

Question 2

Pain is to ________ as cold is to ________.

Accepted Answer

A)  nociceptors; thermoreceptors 
B)  baroreceptors; chemoreceptors 
C)  baroreceptors; nociceptors 
D)  chemoreceptors; nociceptors 
E)  baroreceptors; thermoreceptors 
A)  nociceptors; thermoreceptors 
B)  baroreceptors; chemoreceptors 
C)  baroreceptors; nociceptors 
D)  chemoreceptors; nociceptors 
E)  baroreceptors; thermoreceptors

Question 3

All of the following pathways require third-order neurons synapsing in the thalamus except

Accepted Answer

A)  the lateral spinothalamic tract. 
B)  the anterior spinothalamic tract. 
C)  the anterior and posterior spinocerebellar tracts. 
D)  the gracile fasciculus. 
E)  the cuneate fasciculus. 
A)  the lateral spinothalamic tract. 
B)  the anterior spinothalamic tract. 
C)  the anterior and posterior spinocerebellar tracts. 
D)  the gracile fasciculus. 
E)  the cuneate fasciculus.

Question 4

The spinal tract that relays information concerning pain and temperature to the CNS is the

Accepted Answer

A)  gracile fasciculus. 
B)  cuneate fasciculus. 
C)  posterior spinocerebellar. 
D)  lateral spinothalamic. 
E)  anterior spinothalamic. 
A)  gracile fasciculus. 
B)  cuneate fasciculus. 
C)  posterior spinocerebellar. 
D)  lateral spinothalamic. 
E)  anterior spinothalamic.

Question 5

Free nerve endings detect which stimulus/stimuli?

Accepted Answer

A)  chemical 
B)  temperature, pain, stretch and touch 
C)  pain only 
D)  stretch 
E)  deep pressure 
A)  chemical 
B)  temperature, pain, stretch and touch 
C)  pain only 
D)  stretch 
E)  deep pressure

Question 6

Which ascending tract carries the sensations for fine touch and vibration?

Accepted Answer

A)  corticobulbar 
B)  corticospinal 
C)  posterior (dorsal) column 
D)  spinothalamic 
E)  spinocerebellar 
A)  corticobulbar 
B)  corticospinal 
C)  posterior (dorsal) column 
D)  spinothalamic 
E)  spinocerebellar

Question 7

Activity of neurons in the spinothalamic pathway may still send signals even if the first order sensoryreceptor does not receive a signal such as in amputation. This situation might cause

Accepted Answer

A)  referred pain. 
B)  phantom limb pain. 
C)  pain adaptation. 
D)  paresthesia. 
E)  anesthesia. 
A)  referred pain. 
B)  phantom limb pain. 
C)  pain adaptation. 
D)  paresthesia. 
E)  anesthesia.

Question 8

The medial pathway that controls involuntary movements of head, neck, and arm position in response to sudden visual and auditory stimuli is the ________ tract.

Accepted Answer

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

Question 9

Figure 15-1 Spinothalamic Tracts

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

Accepted Answer

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

Question 10

Tactile receptors located in the reticular dermis that are tonic and show little if any adaptation are called

Accepted Answer

A)  Bulbous corpuscles. 
B)  lamellar corpuscles. 
C)  tactile (Meissner) corpuscles. 
D)  tactile discs. 
E)  root hair plexuses. 
A)  Bulbous corpuscles. 
B)  lamellar corpuscles. 
C)  tactile (Meissner) corpuscles. 
D)  tactile discs. 
E)  root hair plexuses.

Question 11

In the spinothalamic pathway, the sensory neuron that synapses with a neuron in the cerebral cortex is called the ________ neuron.

Accepted Answer

A)  first-order 
B)  second-order 
C)  third-order 
D)  fourth-order 
E)  receptive 
A)  first-order 
B)  second-order 
C)  third-order 
D)  fourth-order 
E)  receptive

Question 12

The spinal tract that unconsciously maintains balance and muscle tone 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 13

Chemoreceptors are located in all of the following except

Accepted Answer

A)  carotid bodies. 
B)  aortic bodies. 
C)  the skin. 
D)  the organs of taste. 
E)  the organs of smell. 
A)  carotid bodies. 
B)  aortic bodies. 
C)  the skin. 
D)  the organs of taste. 
E)  the organs of smell.

Question 14

All of the following are true of fast pain sensations except that they

Accepted Answer

A)  are carried by type A fibers. 
B)  reach the CNS quickly. 
C)  are interpreted by the pre-frontal cortex. 
D)  receive conscious attention. 
E)  often trigger somatic reflexes. 
A)  are carried by type A fibers. 
B)  reach the CNS quickly. 
C)  are interpreted by the pre-frontal cortex. 
D)  receive conscious attention. 
E)  often trigger somatic reflexes.

Question 15

If a friend is talking about someone she knows who lost his special senses, you would correct her when youhear her mention ________ because it is not a special sense.

Accepted Answer

A)  smell 
B)  sight 
C)  balance 
D)  cold 
E)  hearing 
A)  smell 
B)  sight 
C)  balance 
D)  cold 
E)  hearing

Question 16

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.

Question 17

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 18

The basal nuclei

Accepted Answer

A)  initiate conscious motor activity. 
B)  activate spinal reflexes. 
C)  provide the background patterns of movement involved in voluntary motor activities. 
D)  exert direct control over lower motor neurons. 
E)  act as gatekeepers, filtering out unnecessary sensorimotor activity. 
A)  initiate conscious motor activity. 
B)  activate spinal reflexes. 
C)  provide the background patterns of movement involved in voluntary motor activities. 
D)  exert direct control over lower motor neurons. 
E)  act as gatekeepers, filtering out unnecessary sensorimotor activity.

Question 19

A receptor potential may cause all of the following responses except

Accepted Answer

A)  increase neurotransmitter release. 
B)  decrease neurotransmitter release. 
C)  cause hyperpolarization. 
D)  cause depolarization. 
E)  turning off the original stimulus. 
A)  increase neurotransmitter release. 
B)  decrease neurotransmitter release. 
C)  cause hyperpolarization. 
D)  cause depolarization. 
E)  turning off the original stimulus.

Question 20

The rubrospinal tracts originate in the

Accepted Answer

A)  primary motor cortex. 
B)  vestibular nuclei. 
C)  thalamus. 
D)  red nuclei. 
E)  reticular formation. 
A)  primary motor cortex. 
B)  vestibular nuclei. 
C)  thalamus. 
D)  red nuclei. 
E)  reticular formation.

Exam 15: Sensory Pathways and the Somatic Nervous System

The ________ nervous system carries impulses to skeletal muscles.

Pain is to ________ as cold is to ________.

All of the following pathways require third-order neurons synapsing in the thalamus except

The spinal tract that relays information concerning pain and temperature to the CNS is the

Free nerve endings detect which stimulus/stimuli?

Which ascending tract carries the sensations for fine touch and vibration?

Activity of neurons in the spinothalamic pathway may still send signals even if the first order sensoryreceptor does not receive a signal such as in amputation. This situation might cause

The medial pathway that controls involuntary movements of head, neck, and arm position in response to sudden visual and auditory stimuli is the ________ tract.

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

Tactile receptors located in the reticular dermis that are tonic and show little if any adaptation are called

In the spinothalamic pathway, the sensory neuron that synapses with a neuron in the cerebral cortex is called the ________ neuron.

The spinal tract that unconsciously maintains balance and muscle tone is the ________ tract.

Chemoreceptors are located in all of the following except

All of the following are true of fast pain sensations except that they

If a friend is talking about someone she knows who lost his special senses, you would correct her when youhear her mention ________ because it is not a special sense.

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

Descending tracts in the spinal cord relay ________ information.

The basal nuclei

A receptor potential may cause all of the following responses except

The rubrospinal tracts originate in the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous 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, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

Pain is to as cold is to .