Exam 2 Nervous System and Special Senses

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Question #1

The ear ossicles are the smallest bones in the human body.

A False

B True

Question #2

________________ collects sound waves and directs them into the ear.

A tympanic membrane (eardrum)

B external acoustic meatus

C lobule

E pharyngotympanic (auditory) tube

F auricle (pinna)

Question #3

Which of the following structures is not part of the inner ear?

A vestibule of the ear

B tympanic membrane (eardrum)

C cochlea

D semicircular canals

Question #4

The _________________ is one of three ossicles in the middle ear in contact with the tympanic membrane (eardrum) that transmit sound to the rest of ossicles and inner ear.

A incus

B stapes

C malleus

Question #5

Which of the structures below provide a sense of directional balance?

A pharyngotympanic (auditory) tube

B cochlea

C semicircular canals

D tympanic membrane

E cochlear nerve

Question #6

The ___________ helps to funnel sound into the ears better.

A lobule

B Pharyngotympanic (auditory) tube

C auricle (pinna)

D tympanic membrane

E external acoustic meatus

Question #7

The ________________ links the middle ear and pharynx.

A semicircular canals

B tympanic membrane

C cochlea

D cochlear nerve

E pharyngotympanic tube

Question #8

The malleus bone is also known as the __________________.

A stirrup

B hammer

C chisel

D anvil

Question #9

The _____________is the boundary between the external and middle ear.

A tympanic membrane

B auditory tube

C semicircular canals

D cochlea

Question #10

Receptors for hearing are located in the __________________.

A auditory tube

B tympanic membrane

C cochlea

D semicircular canals

Question #11

The stapes bone is also known as the ____________.

A hammer

B stirrup

C anvil

D chisel

Question #12

The auditory tube drains the middle ear and opens up into the nasopharynx. Since the two are connected an ear infection maybe turn into a sore throat or vice versa.

A False

B True

Question #13

________________ controls the pressure within the middle ear, making it equal with the air pressure outside the body.

A external acoustic meatus

B cochlea

C semicircular canals

D auditory tube

E auditory ossicles

Question #14

The ___________ functions as an entryway for sound waves, which get propelled toward the tympanic membrane.

A external acoustic meatus

B cochlea

C semicircular canals

D auditory ossicles

E auditory tube

Question #15

The incus bone is also known as ____________.

A anvil

B stirrup

C hammer

D chisel

Question #16

Transmits sound from the air to the ossicles in the middle ear.

A auditory tube

B semicircular canals

C cochlea

D tympanic membrane

E cochlear nerve

Question #17

The middle ear functions in _______________.

A balance

B transforming sound in neural message

C both hearing and balance

D hearing

Question #18

The nerves responsible for sending information about stimuli to your central nervous system are called ____________.

A afferent nerves

B both afferent and efferent nerves

C efferent nerves

Question #19

The inner ear functions in __________________.

A controling the pressure within the middle ear, making it equal with the air pressure outside the body.

B balance

C hearing

D both hearing and balance

Question #20

What is the structure that helps the eye maintain its shape?

A sclera

B retina

C iris

D cornea

E vitreous humor

Question #21

70% of the cerebral cortex is involved in processing visual information.

A True

B False

Question #22

Light enters the eye through the __________________.

B pupil

C lens

D iris

E optic nerve

F cornea

Question #23

_________________ responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.

A sclera

B choroid

C iris

D cornea

E lens

Question #24

The nerves that carry signals away from the central nervous system in order to initiate an action are called ________________.

A afferent nerves

B efferent nerves

C both afferent and efferent nerves

Question #25

________________ transfers visual information from the retina to the vision centers of the brain via electrical impulses.

A posterior segment

B optic nerve

C iris

D sclera

E vitreous humor

Question #26

The ____________ change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest.

A retina

B iris

C pupil

D vitreous humor

E lens

Question #27

Coat of the eye that acts as a tough protection from injury, and provides attachment for the extraocular muscles that move the eye.

A sclera

B cornea

C optic nerve

D vitreous humor

E iris

Question #28

_________________ receives light that the lens has focused, convert the light into neural signals, and send these signals on to the brain for visual recognition.

A cornea

B optic nerve

C pupil

D iris

E retina

Question #29

______________ is filled with blood vessels that bring oxygen and nutrients to the eye.

A cornea

B choroid

C lens

D iris

E sclera

Question #30

_______________ shade the eyes from sunlight.

A conjunctiva

B eyelids

C iris

D eyelashes

E eyebrows

Question #31

_________________ are sensitive to being touched, thus providing a warning that an object is near the eye.

A iris

B eyelashes

C eyebrows

D conjunctiva

E eyelids

Question #32

Cranial nerve that transmits sensory information to your brain regarding smells you encounter.

A VIII Vestibulochoclear

B XII Hypoglossal

C I Olfactory

D V Trigeminal

E III Oculomotor

Question #33

Cranial nerve that controls your superior oblique muscle. This is the muscle that’s responsible for downward, outward, and inward eye movements.

A IX Glosopharyngeal

B X Vagus

C II Optic nerve

D III Oculomotor

E IV Trochlear

Question #34

Cranial nerve involve hearing and balance and track linear and rotational movement of your head.

A XII Hypoglossal

B VII Facial

C VIII Vestibulochoclear

D VI Abducens

E IV Trochlear

Question #35

Cranial nerve which stimulates voluntary movement of a muscle in the back of your throat called the stylopharyngeus used in swallowing.

A X Vagus

B XI Accesory

C V Trigeminal

D XII Hypoglossal

E IX Glosopharyngeal

Question #36

Cranial nerve used to control head movement (stimulating the sternocleidomastoid and trapezius).

A X Vagus

B XI Accessory

C V Trigeminal

D IX Glosopharyngeal

E XII Hypoglossal

Question #37

Cranial nerve used to control muscles of tongue.

A XII Hypoglossal

B V Trigeminal

C XI Accesory

D X Vagus

E IX Glosopharyngeal

Question #38

Cranial nerve used to stimulate smooth muscle of gastrointestinal tract, and heart rate.

A V Trigeminal

B X Vagus

C IX Glosopharyngeal

D XI Accesory

E XII Hypoglossal

Question #39

Cranial nerve used to stimulate facial sensation and chewing.

A XI Accesory

B IX Glosopharyngeal

C XII Hypoglossal

D X Vagus

E V Trigeminal

Question #40

The entire nerve is surrounded by a tough fibrous sheath called the _________________.

A perineurium

B endoneurium

C epineurium

D ectoneurium

Question #41

The covering of a fascicle within a nerve is the __________________________.

A ectoneurium

B perineurium

C epineurium

D endoneurium

Question #42

An axon collateral from one neuron that circles back and synapses with a previous neuron describes _____________________________.

A a reverberating circuit.

B serial processing.

C a converging circuit.

D parallel processing.

Question #43

Which of the following most immediately encases the smallest component of a nerve?

A epineurium

B perineurium

C fascicle

D endoneurium

Question #44

Which cells provide the myelin sheath for neurons in the PNS?

A Schwann cells

B microglial cells

C astrocytes

D oligodendrocytes

Question #45

Myelin on axons functions to _______________________________.

A store nutrients (fat) for use by the neurons.

B speed the conduction and insulate neighboring axons from one another

C make the axons live longer.

D cover nodes of Ranvier.

Question #46

These glial cells surround the cell bodies of sensory neurons within ganglia of the PNS.

A Schwann cells

B microglia

C satellite cells

D astrocytes

Question #47

Which relatively rare type of neuron has two processes extending from opposite sides of the cell body?

A multipolar

B bipolar

C pseudounipolar

D unipolar

Question #48

Which of the following is the correct sequence of a reflex arc?

A receptor, motor neuron, integration center, effector, sensory neuron

B receptor, sensory neuron, integration center, motor neuron, effector

C integration center, receptor, sensory neuron, motor neuron, effector

D effector, sensory neuron, integration center, motor neuron, receptor

Question #49

Which cells provide the myelin sheath for neurons in the CNS?

A oligodendrocyctes

B astrocytes

C Schwann cells

D microglial cells

Question #50

Interneurons are found ___________________________.

A only in the CNS.

B only in the visceral nervous system.

C only in the PNS.

D only in the autonomic nervous system.

Question #51

Which cells are the macrophages of the CNS?

A satellite cells

B ependymal cells

C Schwann cells

D microglial cells

Question #52

The majority of neurons in the body are _____________________.

A multipolar

B bipolar

C unipolar

D pseudounipolar

Question #53

Which of the following is not a characteristic of neurons?

A high metabolic rate

B inability to divide

C ability to survive without oxygen

D longevity

Question #54

Which of the following is NOT considered a special somatic sense?

A vision

B pain

C hearing

D equilibrium

Question #55

A somatic motor neuron carries ________________________.

A information from the skin to the CNS.

B information, such as pain, from the viscera in the ventral cavity to the CNS.

C motor commands to the skeletal musculature.

D information that signals muscle contraction in the organs in the ventral cavity.

Question #56

This neuronal region transmits electrical impulses away from the cell body.

A cell body

B axon terminal

C axon

D synapse

E dendrite

Question #57

This region of a neuron contains chromatophilic substance or Nissl bodies.

A cell body

B dendrite

C synapse

D axon terminal

E axon

Question #58

This part of the neuron may have branching collaterals.

A cell body

B axon terminal

C axon

D synapse

E dendrite

Question #59

This part of a neuron is a biosynthetic center and receptive region.

A axon

B cell body

C dendrite

D synapse

Question #60

These regions of the neuron direct electrical currents toward the cell body.

A synapse

B axon terminal

C dendrite

D axon

E cell body

Question #61

These regions of a neuron are characterized by numerous, short cytoplasmic extensions and are often referred to as receiving regions.

A cell body

B dendrite

C axon

D synapse

E axon terminal

Question #62

This region of the neuron contains a single nucleus surrounded by cytoplasm.

A cell body

B dendrite

C axon terminal

D synapse

Question #63

An axosomatic synapse occurs between the axon terminals of one neuron and the ________ of a proximal neuron.

A axon

B synapse

C dendrite

D cell body

E axon terminal

Question #64

Chemical signals diffuse between neurons at this location.

A cell body

B axon terminal

C synapse

D dendrite

E axon

Question #65

These regions of a neuron are also referred to as terminal boutons.

A axon

B dendrite

C synapse

D cell body

E axon terminal

Question #66

This tends to be the longest cytoplasmic projection from a neuron.

A synapse

B dendrite

C cell body

D axon terminal

E axon

Question #67

The _____________ of a presynaptic neuron associates with the dendrite of a postsynaptic neuron.

A axon terminal

B synapse

C axon

D dendrite

E cell body

Question #68

This is the site of communication between neurons.

A axon terminal

B axon

C synapse

D cell body

E dendrite

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Exam 2 Nervous System and Special Senses

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