A&P Mastering ch. 13

Part A Part complete Place the following steps in order for motor control. 1. Upper motor neurons stimulate lower motor neurons. 2. Sensory information is relayed back to the cerebellum so movement can be modified if needed. 3. Upper motor neurons in the premotor cortex select a motor program. 4. Lower motor neurons stimulate a skeletal muscle to contract. 5. The basal nuclei enable the thalamus to stimulate upper motor neurons of the primary cortex. 5, 3, 1, 4, 2 3, 5, 1, 2, 4 3, 5, 1, 4, 2 2, 5, 3, 1, 4

3, 5, 1, 4, 2

Which of the following is INCORRECT about the numbers of spinal nerves? 7 pairs of cervical spinal nerves 5 pairs of lumbar spinal nerves 12 pairs of thoracic spinal nerves 5 pairs of sacral spinal nerves

7 pairs of cervical spinal nerves

Which of the following is the last step of a reflex arc? CNS integrates stimulus. PNS detects and delivers stimulus to CNS. PNS delivers motor response from CNS to effectors. CNS delivers motor response from PNS to effectors.

PNS delivers motor response from CNS to effectors

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

Referred pain.

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

The inability to produce a gag reflex could indicate a problem with the: glossopharyngeal nerve (IX) or vagus nerve (X).

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

a large-diameter, myelinated axon.

Mixed nerves house: sensory neurons only. somatic neurons only. motor neurons only. both sensory and motor neurons.

both sensory and motor neurons.

The axillary, radial, median, and ulnar nerves are associated with the __________. cervical plexus brachial plexus lumbar plexus sacral plexus

brachial plexus

What part of the nervous system integrates and interprets information from PNS sensory neurons? sensory (afferent) division central nervous system (CNS) visceral motor division, or autonomic nervous system (ANS) somatic nervous system (SNS)

central nervous system (CNS)

The receptors for smell and taste are __________. mechanoreceptors thermoreceptors photoreceptors chemoreceptors

chemoreceptors

Regions of skin supplied by a spinal nerve for somatic sensation are known as: lines of cleavage. the ABCDE rule. the rule of nines. dermatomes.

dermatomes.

Which of the following must occur first in a reflex arc? integration in the central nervous system (CNS) detection by receptor and delivery of stimulus delivery of motor response to effector transmission from the primary motor cortex

detection by receptor and delivery of stimulus

What is the outermost connective tissue covering of a nerve? epineurium endoneurium perineurium epimysium

epineurium

Photoreceptors are found only in the: nose. ear. mouth. eye.

eye.

Bundles of axons within a nerve are known as: the perineurium. the endoneurium. fascicles. dendrites.

fascicles.

Determine the polysynaptic reflex from this list of examples. simple stretch reflex jaw-jerk reflex patellar (knee-jerk) reflex flexion (withdrawal) reflex

flexion (withdrawal) reflex

Which of the following is NOT a sensory cranial nerve? optic nerve vestibulocochlear nerve hypoglossal nerve olfactory nerve

hypoglossal nerve

The stretch of a full urinary bladder is detected by a(n): interoceptor. exteroceptor. thermoreceptor. photoreceptor.

interoceptor.

Which mechanoreceptor detects deep pressure? tactile corpuscle lamellated corpuscle Merkel cell fiber Ruffini ending

lamellated corpuscle

Multipolar neurons whose axons reach and innervate skeletal muscle fibers are called __________. lower motor neurons sensory neurons upper motor neurons interneurons

lower motor neurons

This is the _____ plexus. sacral lumbar cervical brachial

lumbar

his reflex arc shows a __________. polysynaptic reflex somatic reflex monosynaptic reflex visceral reflex

monosynaptic reflex

A reflex with a single synapse between the sensory and motor neurons within the spinal cord is known as a: somatic reflex. monosynaptic reflex. polysynaptic reflex. visceral reflex.

monosynaptic reflex.

A plexus is a __________. network of spinal nerves cluster of cell bodies of neurons in the PNS section of skin supplied by nerves from a single spinal root cluster of axons in the PNS

network of spinal nerves

Potentially damaging stimuli that result in pain are selectively detected by: proprioceptors. photoreceptors. nociceptors. chemoreceptors.

nociceptors.

Anosmia and other problems associated with smell can result from damage to the __________. facial nerve optic nerve olfactory nerve vestibulocochlear nerve

olfactory nerve

Which cranial nerve detects smell? optic nerve (II) trochlear nerve (IV) oculomotor nerve (III) olfactory nerve (I)

olfactory nerve (I)

Nociceptors detect __________. movement and joint position vibration and deep pressure pain light

pain

Which of the following is a special senses receptor? thermoreceptors photoreceptor tactile corpuscle proprioceptors

photoreceptor

Which of the following carries sensory information only? posterior (dorsal) root anterior ramus anterior root posterior ramus

posterior (dorsal) root

Receptors that detect the movement and position of a joint or body part are called __________. chemoreceptors nociceptors proprioceptors thermoreceptors

proprioceptors

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

rapidly adapting receptors.

Pain in the right side of the neck and shoulder associated with liver and gallbladder pathology is an example of __________. visceral sensation nerve paralysis referred pain shingles

referred pain

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

sciatic nerve.

Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS)? autonomic motor sensory sympathetic

sensory

Reflexes that control skeletal muscle are called __________. somatic spinal monosynaptic visceral

somatic

Neurons that carry signals from the CNS to skeletal muscles are part of the __________. somatic sensory division visceral motor division visceral sensory division somatic motor division

somatic motor division

Afferent signals from external stimuli are carried by the __________. visceral motor division somatic sensory division visceral sensory division somatic motor division

somatic sensory division

Which division detects stimuli of the general senses and special senses? somatic sensory division visceral sensory division somatic motor division visceral motor division (autonomic nervous system)

somatic sensory division

The patellar reflex is a type of __________. stretch reflex cranial reflex withdrawal reflex Golgi tendon reflex

stretch reflex

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

the relative size of receptive fields.

Your wrap your hands around a warm cup of hot chocolate. This sensation is detected by a: thermoreceptor. photoreceptor. chemoreceptor. hair follicle receptor.

thermoreceptor.

Cranial nerve V is the __________. trigeminal nerve facial nerve trochlear nerve accessory nerve

trigeminal nerve

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

trigeminal nerve (V) or glossopharyngeal nerve (IX)

The cranial nerves that have neural connections with the tongue include all of the following EXCEPT: trochlear nerve (IV). facial nerve (VII). glossopharyngeal nerve (IX). trigeminal nerve (V).

trochlear nerve (IV).

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

ulnar nerve

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

vestibulocochlear nerve (VIII)

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

vestibulocochlear nerve (VIII).

The sympathetic nervous system and parasympathetic nervous system are divisions of the: somatic sensory division. visceral motor division (autonomic nervous system). visceral sensory division. somatic motor division.

visceral motor division (autonomic nervous system).