Question 1

We are constantly bombarded by a variety of stimuli inside and outside of our bodies.Why are we not overwhelmed by sensory information?

Accepted Answer

A) We do not have receptors for most stimuli. 
B) Stimuli are blocked from the receptors by our immune systems. 
C) Most stimuli are external to our bodies and we have very few exteroceptors on the outside of the body. 
D) A particular receptor type can have different sensitivities to different stimuli. 
E) A very tiny percentage of incoming sensory information is received by the cerebral cortex. 
A) We do not have receptors for most stimuli. 
B) Stimuli are blocked from the receptors by our immune systems. 
C) Most stimuli are external to our bodies and we have very few exteroceptors on the outside of the body. 
D) A particular receptor type can have different sensitivities to different stimuli. 
E) A very tiny percentage of incoming sensory information is received by the cerebral cortex.

Question 2

Figure 15-2 The Corticospinal Pathway
Use Figure 15-2 to answer the following questions:
-Identify the type of information that travels along the structure labeled "4."

Accepted Answer

A) motor commands to skeletal muscles 
B) proprioception to the cerebral cortex 
C) fine touch to the cerebral cortex 
D) pain and crude touch sensations 
E) visceral motor commands to smooth muscle 
A) motor commands to skeletal muscles 
B) proprioception to the cerebral cortex 
C) fine touch to the cerebral cortex 
D) pain and crude touch sensations 
E) visceral motor commands to smooth muscle

Question 3

The heart muscle is a ________ effector.

Accepted Answer

A) somatic 
B) sympathetic 
C) visceral 
D) afferent 
E) higher-order 
A) somatic 
B) sympathetic 
C) visceral 
D) afferent 
E) higher-order

Question 4

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 5

Mechanoreceptors might detect which of the following sensations?

Accepted Answer

A) pressure 
B) touch 
C) vibration 
D) muscle length 
E) All of the answers are correct. 
A) pressure 
B) touch 
C) vibration 
D) muscle length 
E) All of the answers are correct.

Question 6

Sensations of burning or aching pain

Accepted Answer

A) are carried by type A fibers. 
B) reach the CNS quickly. 
C) cause a generalized activation of the reticular formation and the thalamus. 
D) are well localized. 
E) are fast adapting. 
A) are carried by type A fibers. 
B) reach the CNS quickly. 
C) cause a generalized activation of the reticular formation and the thalamus. 
D) are well localized. 
E) are fast adapting.

Question 7

Figure 15-2 The Corticospinal Pathway
Use Figure 15-2 to answer the following questions:
-Identify the structure labeled " 1."

Accepted Answer

A) primary sensory cortex 
B) primary motor cortex 
C) thalamus 
D) autonomic motor center 
E) basal nuclei 
A) primary sensory cortex 
B) primary motor cortex 
C) thalamus 
D) autonomic motor center 
E) basal nuclei

Question 8

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 9

A receptor that contains many mechanically-gated ion channels would function best as a

Accepted Answer

A) tactile receptor. 
B) chemoreceptor. 
C) photoceptor 
D) thermoreceptor. 
E) light receptor. 
A) tactile receptor. 
B) chemoreceptor. 
C) photoceptor 
D) thermoreceptor. 
E) light receptor.

Question 10

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 11

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 12

The afferent neuron that carries the sensation to the CNS is a ________ neuron.

Accepted Answer

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

Question 13

What loss would result from cutting through the medial lemniscus on the right side?

Accepted Answer

A) loss of pain sensation on the left side of the body 
B) loss of pain sensation on the right side of the body 
C) loss of fine touch sensation on the left side of the body 
D) loss of fine touch sensation on the right side of the body 
E) complete hemiplegia (paralysis)on the left side of the body 
A) loss of pain sensation on the left side of the body 
B) loss of pain sensation on the right side of the body 
C) loss of fine touch sensation on the left side of the body 
D) loss of fine touch sensation on the right side of the body 
E) complete hemiplegia (paralysis)on the left side of the body

Question 14

What are the four types of sensory receptors for the general senses? What is the nature of the stimuli that excite each type?

Accepted Answer

(1)Nociceptors: a variety of stimuli ass

Question 15

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

Accepted Answer

A) fasciculus gracilis. 
B) fasciculus cuneatus. 
C) posterior spinocerebellar. 
D) lateral spinothalamic. 
E) anterior spinothalamic. 
A) fasciculus gracilis. 
B) fasciculus cuneatus. 
C) posterior spinocerebellar. 
D) lateral spinothalamic. 
E) anterior spinothalamic.

Question 16

Damage to the tectospinal tracts would interfere with the ability to

Accepted Answer

A) position the arms. 
B) monitor body position. 
C) make reflex responses of the head and neck in response to sudden movements or loud noises. 
D) control motor units located in the leg. 
E) coordinate eating and swallowing movements. 
A) position the arms. 
B) monitor body position. 
C) make reflex responses of the head and neck in response to sudden movements or loud noises. 
D) control motor units located in the leg. 
E) coordinate eating and swallowing movements.

Question 17

________ are receptors in the aorta that monitor the blood pressure.

Accepted Answer

A) Chemoreceptors 
B) Nociceptors 
C) Baroreceptors 
D) Proprioceptors 
E) Hair cells 
A) Chemoreceptors 
B) Nociceptors 
C) Baroreceptors 
D) Proprioceptors 
E) Hair cells

Question 18

The conversion of a sensory input to a change in membrane potential in the receptor is known as

Accepted Answer

A) transduction. 
B) reception. 
C) effection. 
D) potential. 
E) stimulation. 
A) transduction. 
B) reception. 
C) effection. 
D) potential. 
E) stimulation.

Question 19

Figure 15-2 The Corticospinal Pathway
Use Figure 15-2 to answer the following questions:
-Identify the origin of the axon labeled "2."

Accepted Answer

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

Question 20

Bladder fullness is to ________ as blood pH 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

Exam 15: Sensory Pathways and the Somatic Nervous System

We are constantly bombarded by a variety of stimuli inside and outside of our bodies.Why are we not overwhelmed by sensory information?

Figure 15-2 The Corticospinal Pathway Use Figure 15-2 to answer the following questions: -Identify the type of information that travels along the structure labeled "4."

The heart muscle is a ________ effector.

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

Mechanoreceptors might detect which of the following sensations?

Sensations of burning or aching pain

Figure 15-2 The Corticospinal Pathway Use Figure 15-2 to answer the following questions: -Identify the structure labeled " 1."

Pain is to ________ as cold is to ________.

A receptor that contains many mechanically-gated ion channels would function best as a

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

The basal nuclei

The afferent neuron that carries the sensation to the CNS is a ________ neuron.

What loss would result from cutting through the medial lemniscus on the right side?

What are the four types of sensory receptors for the general senses? What is the nature of the stimuli that excite each type?

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

Damage to the tectospinal tracts would interfere with the ability to

________ are receptors in the aorta that monitor the blood pressure.

The conversion of a sensory input to a change in membrane potential in the receptor is known as

Figure 15-2 The Corticospinal Pathway Use Figure 15-2 to answer the following questions: -Identify the origin of the axon labeled "2."

Bladder fullness is to ________ as blood pH is to ________.

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

Pain is to as cold is to .

Bladder fullness is to as blood pH is to .