A&PII: Chapter 13 Lecture Homework

Which cranial nerve detects smell? A - optic nerve (II) B - oculomotor nerve (III) C - olfactory nerve (I) D - trochlear nerve (IV)

C - olfactory nerve (I)

Which of the following is mismatched when the nerve is damaged? A - Ulnar nerve-improper flexion of forearm muscles B - Sciatic nerve-ankle pain C - Femoral nerve-knee pain D - Median nerve-reduced hand flexion

C - Femoral nerve-knee pain

This nerve is important in controlling several facial muscles. When Darius smiled, frowned, and puffed out his cheeks with no problems it indicated that this nerve was functioning properly.

Facial

Some cranial nerves are only sensory in function. Their function is to relay sensory information to the brain for interpretation. Select the sensory cranial nerves from the list below. Trochlear Glossopharyngeal Oculomotor Vagus Trigeminal Accessory Olfactory Vestibulocochlear Optic Abduces Hypoglossal Facial

Olfactory Vestibulocochlear Optic

The _____ nervous system is under involuntary, or automatic, control.

autonomic

The prefix _____ means "body."

soma-

The prefix _____ means "arm."

brachi-

This muscle was tested when Darius followed the doctor's finger with his eyes. When Darius looked to the sides, this nerve was assessed because it innervates muscles that allow an individual to look to the side.

Abducens

This nerve was tested by monitoring Darius's speech and observing him when he shrugged his shoulders and turned his head. It innervates structures associated with speech, as well as the trapezius and sternocleidomastoid muscles.

Accessory

Which of the following receptors is responsible for detecting stimuli of a special sense? A - Proprioceptors B - Photoreceptor C - Tactile corpuscle D - Thermoreceptors

B - Photoreceptor

Photoreceptors are found only in the: A - mouth. B - eye. C - nose. D - ear.

B - eye.

Which of the following are groups of neuronal cell bodies that are located within the ANS? A - tracts B - ganglia C - nuclei D - nerves

B - ganglia

The inability to produce a gag reflex could indicate a problem with the: A - hypoglossal nerve (XII) or vestibulocochlear nerve (VIII). B - abducens nerve (VI) or trochlear nerve (IV). C - glossopharyngeal nerve (IX) or vagus nerve (X). D - facial nerve (VII) or trigeminal nerve (V).

C - glossopharyngeal nerve (IX) or vagus nerve (X).

Which of the following does NOT belong to the brachial plexus? A - musculocutaneous nerve B - ulnar nerve C - phrenic nerve D - median nerve

C - phrenic nerve

Sensory receptors that adapt to stimuli after a certain period of time are: A - thermoreceptors. B - nociceptors. C - rapidly adapting receptors. D - slowly adapting receptors.

C - rapidly adapting receptors.

The longest and largest nerve in the body belongs to the sacral plexus and is known as the: A - axillary nerve. B - femoral nerve. C - sciatic nerve. D - common fibular nerve.

C - sciatic nerve.

You wrap your hands around a warm cup of hot chocolate. This sensation is detected by a: A - chemoreceptor. B - hair follicle receptor. C - thermoreceptor. D - photoreceptor.

C - thermoreceptor.

The cranial nerves that have neural connection with the tongue include all of the following EXCEPT: A - facial nerve (VII). B - trigeminal nerve (V). C - trochlear nerve (IV). D - glossopharyngeal nerve (IX).

C - trochlear nerve (IV).

Striking the "funny" bone is actually stimulation (or injury) to the: A - median nerve. B - radial nerve. C - ulnar nerve. D - axillary nerve.

C - ulnar nerve.

Which cranial nerve is NOT involved in eye movement? A - trochlear nerve (IV) B - oculomotor nerve (III) C - vestibulocochlear nerve (VIII) D - abducens nerve (VI)

C - vestibulocochlear nerve (VIII)

Loss of balance and equilibrium can indicate damage to the: A - accessory nerve (XI). B - hypoglossal nerve (XII). C - vestibulocochlear nerve (VIII). D - trochlear nerve (IV).

C - vestibulocochlear nerve (VIII).

Which reflex causes muscle relaxation? A - crossed-extension reflex B - flexion (withdrawal) reflex C - Golgi tendon reflex D - stretch reflex

C - Golgi tendon reflex

Suppose a patient comes in with an upper motor neuron disorder. Which of the following might be a plausible clinical presentation? A - It will only affect the Golgi tendon reflex by decreasing its activity but not simple stretch reflex. B - The patient will always present with paralysis (inability to contract skeletal muscles) or paresis (weakness of skeletal muscle contractions). C - Increase in stretch reflexes may occur. D - Simple stretch reflexes might not occur when activating muscle spindles.

C - Increase in stretch reflexes may occur.

During a boxing match, Sammy was hit on the side of the neck. He stopped breathing temporarily due to damage to the: A - brachial plexus. B - lumbar plexus. C - cervical plexus. D - sacral plexus.

C - cervical plexus.

Determine the postsynaptic reflex from this list of examples. A - simple stretch reflex B - patellar (knee-jerk) reflex C - flexion (withdrawal) reflex D - jaw-jerk reflex

C - flexion (withdrawal) reflex

Another mixed cranial nerve also plays a role in the chemoreceptor and baroreceptor reflexes to regulate heart rate, blood pressure and respiratory rate. This nerve also helps with swallowing and the gag reflex. Which nerve is this? A - Oculomotor B - Hypoglossal C - Facial D - Glossopharyngeal

D - Glossopharyngeal

Inflammation of what nerve results in carpal tunnel syndrome (CTS)? A - Axillary nerve B - Obturator nerve C - Phrenic nerve D - Median nerve

D - Median nerve

Some cranial nerves transport sensory information to the brain, as well as motor commands from the brain. These nerves are known as mixed nerves. One very important mixed nerve is the longest cranial nerve. It is the only nerve to innervate organs in the thoracic and abdominal cavities. Which nerve is this? A - Accessory B - Trochlear C - Trigeminal D - Vagus

D - Vagus

The vagus nerve is represented by Roman numeral: A - XII. B - I. C - V. D - X.

D - X.

The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in: A - a small-diameter, unmyelinated axon. B - axons with a greater receptive field. C - axons that adapt to stimuli. D - a large-diameter, myelinated axon.

D - a large-diameter, myelinated axon.

A bundle of axons within a nerve is called a _____. A - fascicle B - ramus C - endoneurium D - ganglion

A - fascicle

The sympathetic nervous system and parasympathetic nervous system are divisions of the: A - visceral sensory division. B - visceral motor division (or autonomic nervous system, ANS). C - somatic motor division. D - somatic sensory division.

B - visceral motor division (or autonomic nervous system, ANS).

Which of the following complements the flexion (withdrawal) reflex? A - gag reflex B - Golgi tendon reflex C - crossed-extension reflex D - stretch reflex

C - crossed-extension reflex

The posterior cord of the brachial plexus divides into which two nerves? A - Ulnar and median nerves B - Ulnar and radial nerves C - Radial and musculocutaneous nerves D - Axillary and radial nerves

D - Axillary and radial nerves

What specific spinal nerve branch controls the movement of rectus abdominis, a skeletal muscle on the anterior surface of the body? A - posterior (dorsal) root ganglion B - posterior ramus C - posterior root D - anterior ramus

D - anterior ramus

This nerve was tested twice. It controls the pupil reflex in response to light (constriction) and is important in moving 4 of 6 eye muscles. When Darius followed the doctor's fingers with his eyes, rather than his head, the function of this nerve was tested.

Oculomotor

The prefix _____ means "self."

auto-

The _____ plexus is a network of nerves located near the arm pit.

brachial

Which plexus provides motor and sensory innervation to the upper limb? A - brachial plexus B - cranial plexus C - sacral plexus D - lumbar plexus

A - brachial plexus

The branch of the anterior ramus that contains autonomic neurons of the sympathetic nervous system is called _____. A - anterior root B - cervical root C - posterior ramus D - ramus communicans

D - ramus communicans

The anterior root and posterior root fuse to form a(n): A - posterior horn. B - anterior horn. C - posterior (dorsal) root ganglion. D - spinal nerve.

D - spinal nerve.

What is the name of cranial nerve VIII? A - glossopharyngeal nerve B - trigeminal nerve C - facial nerve D - vestibulocochlear nerve

D - vestibulocochlear nerve

This nerve was tested when Darius was asked to identify the number of fingers the doctor held up. Damage to this nerve will result in visual disturbances.

Optic

The prefix _____ means "below."

hypo-

Which mechanoreceptor detects deep pressure? A - lamellated corpuscle B - tactile corpuscle C - Ruffini ending D - Merkel cell fiber

A - lamellated corpuscle

Which of the following parts of a spinal nerve carries sensory information only? A - posterior (dorsal) root B - anterior root C - posterior ramus D - anterior ramus

A - posterior (dorsal) root

Pain in the right side of the neck and shoulder associated with liver and gallbladder pathology is an example of _____. A - referred pain B - shingles C - visceral sensation D - nerve paralysis

A - referred pain

Visceral pain may be perceived as cutaneous pain, a phenomenon known as: A - referred pain. B - slowly adapting reception. C - the receptive field. D - phantom limb pain.

A - referred pain.

What connects the upper motor neurons to lower motor neurons? A - primary afferent neuron B - interneurons C - muscle fibers D - sensory neurons

B - interneurons

In the crossed-extension reflex, if the right leg flexes, then the left leg: A - adducts. B - abducts. C - extends. D - flexes.

C - extends.

An inability to swallow indicates a problem with the: A - trigeminal nerve (V) or glossopharyngeal nerve (IX). B - olfactory nerve (I). C - accessory nerve (XI) or hypoglossal nerve (XII). D - trochlear nerve (IV) or abducens nerve (VI).

A - trigeminal nerve (V) or glossopharyngeal nerve (IX).

Damage of proprioceptors or sensory neurons that communicate with the cerebellum will cause which of the following? A - One may not know where their body part or limbs are relative to space. B - All the answer choices are correct. C - There may be a lack of coordination while walking. D - Can affect balance.

B - All the answer choices are correct.

Which muscle or muscle group is served by the femoral nerve? A - gastrocnemius B - quadriceps femoris group C - gluteus maximus D - hamstring group

B - quadriceps femoris group

A test known as two-point discrimination threshold measures: A - the amount of pressure we can sustain before feeling pain. B - the relative size of receptive fields. C - the type of mechanoreceptor being stimulated. D - the type of sensory neuron serving a region of skin.

B - the relative size of receptive fields.

What cranial nerves are involved in the sensory and the motor roles for the corneal blink reflex? A - trochlear nerve (IV) as sensory; abducens nerve (VI) as motor B - trigeminal nerve (V) as sensory; facial nerve (VII) as motor C - glossopharyngeal nerve (IX) as sensory; oculomotor nerve (III) as motor D - optic nerve (II) as sensory; oculomotor nerve (III) as motor

B - trigeminal nerve (V) as sensory; facial nerve (VII) as motor

Some cranial nerves do not transport sensory information and only carry motor commands from the brain to the muscles and other structures. These nerves are known as motor nerves. Select the motor cranial nerves from the list below. Hypoglossal Accessory Oculomotor Optic Vestibulocochlear Trochlear Abducens Facial Olfactory Vagus Trigeminal Glossopharyngeal

Hypoglossal Accessory Oculomotor Trochlear Abducens

This nerve is a mixed nerve. The sensory component was tested when Darius's face was touched and there was no difference in sensation on his forehead, cheek, and jawline on either side of his face. This nerve innervates the masseter muscles, and the motor function was tested when Darius clenched his teeth.

Trigeminal

The _____ nerve originates from the medulla and travels below the tongue.

hypoglossal

The _____ nervous system allows us to voluntarily control our body's 19 movements.

somatic

Which of the following houses motor neurons? A - posterior root ganglion B - posterior root of spinal nerve C - central canal of the spinal cord D - anterior root of spinal nerve

D - anterior root of spinal nerve

The receptors for smell and taste are _____. A - photoreceptors B - mechanoreceptors C - thermoreceptors D - chemoreceptors

D - chemoreceptors

Which cranial nerve is generally thought of as a mixed nerve? A - accessory nerve (XI) B - vestibulocochlear nerve (VIII) C - hypoglossal nerve (XII) D - glossopharyngeal nerve (IX)

D - glossopharyngeal nerve (IX)

The stretch of a full urinary bladder is detected by a(n): A - thermoreceptor. B - exteroceptor. C - photoreceptor. D - interoceptor.

D - interoceptor.