Review Spinal Cord Quiz

Place the following events of a reflex arc in the correct order: 1) motor neuron activation, 2) sensory neuron activation, 3) sensory receptor activation, 4) Information processing, 5) effector response. A.) 3, 2, 4, 1, 5 B.) 4, 3, 1, 2, 5 C.) 1, 5, 3, 2, 4 D.) 2, 3, 4, 5, 1 E.) 3, 2, 1, 5, 4

A.) 3, 2, 4, 1, 5

Reflexes that activate muscles on the opposite side of the body as the stimulus are called A.) contralateral B.) involuntary C.) ipsilateral D.) monosynaptic

A.) contralateral

The specific strip of skin that is innervated by a specific spinal nerve is called a A.) dermatome B.) root C.) ramus D.) ganglion E.) trunk

A.) dermatome

Masses of gray matter within the central nervous system are A.) nuclei B.) horns C.) ganglia D.) commissures

A.) nuclei

The loss of feeling and movement of the legs is termed A.) paraplegia B.) spinal shock C.) quadriplegia D) hemiplegia

A.) paraplegia

A complex, interwoven network of nerves is called a A.) plexus B.) dermatome C.) ganglion D.) tract E.) ramus

A.) plexus

The largest peripheral nerve is the ________ nerve. A.) sciatic B.) femoral C.) phrenic D.) obturator

A.) sciatic

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the A.) subarachnoid space B.) cerebral ventricles C.) epidural space D.) dura mater

A.) subarachnoid space

The posterior root of a spinal nerve contains A.) cell bodies of sensory neurons. B.) axons of sensory neurons C.) interneurons D.) axons of motor neurons E.) cell bodies of motor neurons

B.) axons of sensory neurons

The tough, fibrous, outermost covering of the spinal cord is the A.) pia mater B.) dura mater C.) periosteum D.) arachnoid mater E.) coccygeal ligament

B.) dura mater

Figure 13-1 The Spinal CordUse Figure 13-1 to answer the following questions:Identify the structure labeled "4." A.) posterior white column B.) posterior gray horn C.) anterior gray horn D.) anterior gray ganglion

C.) anterior gray horn

The anterior root of a spinal nerve contains A.) interneurons B.) cell bodies of sensory neurons C.) axons of motor neurons D.) cell bodies of motor neuron

C.) axons of motor neurons

A viral disease that destroys the cells of the anterior gray horn will A.) interfere with position sense B.) affect visceral motor function C.) lead to skeletal muscle weakness or paralysis D.) block autonomic regulation E.) mainly interfere with crude touch and temperature sense

C.) lead to skeletal muscle weakness or paralysis

Spinal nerves are A.) purely sensory B.) involuntary C.) mixed nerves D.) purely motor

C.) mixed nerves

The white matter of the spinal cord is mainly A.) unmyelinated axons B.) nodes of Ranvier C.) myelinated axons D.) neuroglia

C.) myelinated axons

Regional loss of sensory or motor function from nerve trauma or compression is termed A.) hemisection B.) dermatome C.) peripheral neuropathy D.) shingles

C.) peripheral neuropathy

The brachial plexus gives rise to all of the following nerves except the A.) median B.) radial C.) phrenic D.) musculocutaneous E.) ulnar

C.) phrenic

Arrange the spinal meninges from innermost layer to outermost layer. A.) dura mater, arachnoid mater, pia mater B.) pia mater, dura mater, arachnoid mater C.) pia mater, arachnoid mater, dura mater D.) dura mater, pia mater, arachnoid mater

C.) pia mater, arachnoid mater, dura mater

A(n) ________ reflex has at least one interneuron placed between the sensory and motor neurons. A.) involuntary B.) ipsilateral C.) polysynaptic D.) monosynaptic

C.) polysynaptic

In the condition ________, a virus infects posterior root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory nerves as seen in their dermatomes A.) myasthenia gravis B.) Hodgkin's disease C.) shingles D.) neuronal damage

C.) shingles

Use Figure 13-2 to answer the following questions:Ken has a herniated disc which is pinching the structure labeled "10". He is most likely experiencing impairment in which sensory pathway? A.) visceral motor B.) somatic and visceral motor C.) somatic and visceral sensory D.) visceral sensory

C.) somatic and visceral sensory

The adult spinal cord typically ends between vertebrae A.) S5-Co1 B.) L5-S1 C.) S4-S5 D.) L1-L2 E.) T12-L1

D.) L1-L2

In which plexus does the ulnar nerve arise? A.) lumbar B.) sacral C.) cervical D.) brachial

D.) brachial

The spinal cord is part of the ________ nervous system. A.) peripheral B.) somatic C.) afferent D.) central E.) autonomic

D.) central

Enlarged area of the spinal cord from which nerves to the shoulder and upper limbs arise. A.) sacral region B.)lumbar enlargement C.) conus medullaris D.) cervical enlargement E.) thoracic region

D.) cervical enlargement

Reflexes that activate muscles on the same side of the body as the stimulus are called A.) polysynaptic B.) monosynaptic C.) contralateral D.) ipsilateral

D.) ipsilateral

Spinal nerves from the sacral region of the cord innervate the ________ muscles A.) abdominal B.) shoulder C.) facial D.) leg

D.) leg

Loss of feeling in the thumb and first two fingers is most likely due to a damaged ________ nerve. A.) radial B.) axillary C.) ulnar D.) median E.) musculocutaneous

D.) median

Cerebrospinal fluid flows within the A.) dura mater B.) arachnoid mater C.) pia mater D.) subarachnoid space

D.) subarachnoid space