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Anatomy II > Lecture 16 (Exam 2) > Flashcards

Lecture 16 (Exam 2) Flashcards

1
Q

This is a component of the outer ear that is a layer of skin over cartilage framework. It also has a lobule which is a fibrous fatty tissue with no cartilage.

A

Auricle

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2
Q

What provides sensory innervation to the outer ear?

A

Great auricular nerve
Auriculotemporal nerve
Lesser occipital nerve

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3
Q

This component of the outer ear goes from the auricle to the tympanic membrane. It is S-shaped and 2.5 cm in length. It is lined by skin and ceruminous glands.

A

External acoustic (auditory) meatus

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4
Q

In the middle ear, there is a dense fibrous membrane called the tympanic membrane. Externally it’s covered by ________, and internally it’s covered by _________.

A

Skin

Mucosa

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5
Q

The _______ _______ is an air-filled cavity within the petrous portion of the temporal bone.

A

Tympanic cavity

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6
Q

Within the tympanic cavity, there is the _______ window and _______ window.

A

Round

Oval

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7
Q

This component of the tympanic cavity is enclosed by the secondary tympanic membrane. It undergoes compensatory excursions with movement of stapes.

A

Round window

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8
Q

This component of the tympanic cavity is closed by footplate of stapes.

A

Oval window

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9
Q

In the middle ear, there are the auditory ossicles. These are…

A

Malleus
Incus
Stapes

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10
Q

This auditory ossicle is attached to the tympanic membrane.

A

Malleus

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11
Q

This auditory ossicle is attached to the oval window (fenestra vestibuli).

A

Stapes

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12
Q

This component of the middle ear is a muscle that inserts onto the neck of the stapes.

A

Stapedius muscle

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13
Q

The stapedius muscle contracts reflexively in response to what?

A

Loud sounds

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14
Q

What innervates the stapedius muscle?

A

CN VII

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15
Q

This component of the middle ear is a muscle that inserts onto the malleus.

A

Tensor tympani muscle

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16
Q

The tensor tympani muscle contracts reflexively in response to what?

A

Loud sounds

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17
Q

What is the tensor tympani muscle innervated by?

A

CN V3 (Mandibular nerve)

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18
Q

This nerve innervates the middle ear, along with its branches.

A

CN IX (Glossopharyngeal nerve)

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19
Q

This branch of CN IX provides sensory innervation to mucosa of tympanic cavity, mastoid air cells, and auditory tube.

A

Tympanic nerve

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20
Q

This branch of CN IX leaves the tympanic cavity to the floor of middle cranial fossa. It descends through the foramen ovale to the infratemporal fossa and ends in the otic ganglion.

A

Lateral petrosal nerve

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21
Q

The inner ear lies within what?

A

Petrous part of temporal bone

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22
Q

This part of the inner ear is lined with periosteum.

A

Bony labyrinth

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23
Q

The bony labyrinth and membranous labyrinth of the inner ear are supplied by the _________ artery, which is from the _______ artery.

A

Labyrinthine

Basilar

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24
Q

The basilar artery is formed by the fusion of two _______ arteries.

A

Vertebral

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25
Q

This part of the inner resembles a snail shell, has three turns, and the round window (fenestra cochlea).

A

Cochlea

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26
Q

This part of the inner ear contains the utricle and saccule.

A

Vestibule

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27
Q

This innervates the inner ear.

A

Vestibulocochlear (auditory) nerve (CN VIII)

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28
Q

These are part of the inner ear and are arranged in three planes. They have an anterior, posterior, and lateral component.

A

Semicircular canals

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29
Q

The semicircular canals open into the ________ and are dilated at one end to form the ________.

A

Utricle

Ampulla

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30
Q

The ampulla contains the _______ _______, which senses ________ ________.

A

Crista ampullaris

Rotational acceleration

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31
Q

The utricle and saccule each have ________ which senses ________ ________ and pull of ________.

A

Macula
Linear acceleration
Gravity

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32
Q

The roof of the orbit consists of what?

A

Orbital plate of frontal bone

Lesser wings of sphenoid

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33
Q

What is a special feature of the roof of the orbit?

A

Fossa for lacrimal gland

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34
Q

What is the roof of the orbit related to?

A

Frontal cerebral lobes

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35
Q

The floor of the orbit consists of what?

A

Orbital plate of maxilla
Zygomatic
Orbital process of palatine

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36
Q

What is the floor of the orbit related to?

A

Maxillary sinus

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37
Q

What are the special features of the floor of the orbit?

A

Infraorbital groove and canal

38
Q

What passes through the infraorbital groove and canal?

A

Infraorbital nerve

Infraorbital artery

39
Q

The infraorbital nerve is a continuation of CN _____.

A

V2 (Maxillary nerve)

40
Q

The infraorbital artery is a branch of the…

A

External carotid artery

41
Q

The medial wall of the orbit consists of what?

A

Lacrimal
Frontal
Ethmoid

42
Q

What is the medial wall of the orbit related to?

A

Ethmoid air cells
Sphenoid sinus
Nasal cavity

43
Q

What are the special features of the medial wall of the orbit?

A

Fossa for lacrimal sac

Opening for nasolacrimal canal

44
Q

The lateral wall of the orbit consists of what?

A

Zygomatic
Greater wing of sphenoid
Frontal

45
Q

What is the lateral wall of the orbit related to?

A

Temporal fossa containing temporalis muscle

Middle cranial fossa

46
Q

The external features of the eye include what?

A

Conjunctiva

Eyelids

47
Q

What are the components of the eyelids?

A

Tarsal plates

Tarsal glands

48
Q

The lacrimal apparatus of the eye consists of what?

A

Lacrimal papilla and puncta
Lacrimal canaliculi and sac
Nasolacrimal duct

49
Q

The sympathetic supply to the lacrimal apparatus is from T1 to the ________ ________ _________ and then to the ________ ________.

A

Superior cervical ganglion

Lacrimal gland

50
Q

The parasympathetic supply to the lacrimal apparatus is from the lacrimal nucleus via CN VII to the _________ ________ then to the lacrimal gland courtesy of _______.

A

Sphenopalatine ganglion

CN V

51
Q

The superior orbital fissure has what pass through it?

A 
CN III
CN IV
CN V1 (Ophthalmic)
Branches of CN V1 -- Frontal; Lacrimal; Nasociliary 
CN VI 
Superior ophthalmic vein
52
Q

The optic canal has what pass through it?

A

CN II

Ophthalmic artery

53
Q

The anterior and posterior ethmoidal foramina are the exit for anterior and posterior ________ ________.

A

Ethmoidal nerves

54
Q

The inferior orbital fissure has what pass through it?

A

CN V2

Branches of CN V2 – Infraorbital; Zygomatic; Orbital

55
Q

The six extrinsic muscles of the eye originate from a common annular tendon and control what?

A

Movement of the eyeball

56
Q

Which extrinsic muscles of the eye are innervated by CN III?

A

Inferior oblique
Superior rectus
Medial rectus
Inferior rectus

57
Q

Which extrinsic muscle of the eye is innervated by CN IV?

A

Superior oblique

58
Q

Which extrinsic muscle of the eye is innervated by CN VI?

A

Lateral rectus

59
Q

This eye muscle raises the upper eyelid and is innervated by CN III.

A

Levator palpebrae superioris

60
Q

In the eye, parasympathetics go from the Edinger-Westphal nucleus to ciliary ganglion then the _______ _______ muscle.

A

Sphincter pupillae

61
Q

In the eye, sympathetics go from T1 to superior cervical ganglion then the ________ ________ muscle.

A

Dilator pupillae

62
Q

This extrinsic muscle of the eye abducts, elevates, and laterally rotates the eyeball.

A

Inferior oblique

63
Q

This extrinsic muscle of the eye elevates, adducts, and medially rotates the eyeball.

A

Superior rectus

64
Q

This extrinsic muscle of the eye adducts the eyeball.

A

Medial rectus

65
Q

This extrinsic muscle of the eye depresses, adducts, and rotates the eyeball laterally.

A

Inferior rectus

66
Q

This extrinsic muscle of the eye abducts, depresses, and medially rotates the eyeball.

A

Superior oblique

67
Q

This extrinsic muscle of the eye abducts the eyeball.

A

Lateral rectus

68
Q

What provides sensory innervation to the orbit?

A 
Optic nerve
Ophthalmic nerve (V1) and its branches
69
Q

What are the branches of the ophthalmic nerve (V1) that provide sensory innervation to the orbit?

A

Lacrimal nerve
Nasociliary nerve
Frontal nerve

70
Q

The nasociliary nerve (from V1) has branches that provide sensory innervation to the orbit. These branches are…

A

Infratrochlear nerve

Anterior and posterior ethmoidal nerves

71
Q

The frontal nerve (from V1) has branches that provide sensory innervation to the orbit. These branches are…

A

Supratrochlear nerve

Supraorbital nerve

72
Q

In the oral cavity, the anterior 2/3 of palate, palatine folds of maxillae, and palatines are part of the _______ _______.

A

Hard palate

73
Q

In the oral cavity, the posterior 1/3 of palate and fibromuscular fold are part of the _______ _______.

A

Soft palate

74
Q

The maxillary bone and mandibular bone hold _______ in the oral cavity.

A

Teeth

75
Q

In the oral cavity, the vestibule is between lips/cheeks and gums/teeth. It leads to the oral cavity proper and receives the ________ ________, opposite the upper second molar.

A

Parotid duct

76
Q

The oral cavity is bounded by teeth and gums, hard/soft palates, and leads to the ________ and ________.

A

Pharynx (oropharynx)

Uvula

77
Q

In the oral mucous membranes, sensory innervation is done by what nerves?

A 
CN V2 (Maxillary nerve) and branches 
CN V3 (Mandibular nerve) and branches
78
Q

In the oral mucous membranes, sensory innervation is done by what branches of CN V2?

A

Greater and lesser palatine nerves

Nasopalatine nerves

79
Q

In the oral mucous membranes, sensory innervation is done by what branches of CN V3?

A

Lingual nerve

Buccal nerve

80
Q

This sensory nerve innervates the floor of the mouth.

A

Lingual nerve

81
Q

This sensory nerve innervates the vestibule and cheek.

A

Buccal nerve

82
Q

In the oral mucous membranes, motor parasympathetics are from the superior salivary nucleus via CN VII, to the submandibular/sublingual ganglia then to the _________ and _________ glands.

A

Submandibular

Sublingual

83
Q

In the oral mucous membranes, motor parasympathetics are from the inferior salivary nucleus via CN IX, to the otic ganglion, then to the _______ gland.

A

Parotid

84
Q

The maxillary teeth are innervated by what?

A

Superior alveolar branches of CN V2

85
Q

The mandibular teeth are innervated by what?

A

Inferior alveolar branches of CN V3

86
Q

The general sensory innervation of the anterior 2/3 of the tongue is done by what nerve?

A

Lingual nerve (from CN V3)

87
Q

The general sensory innervation of the posterior 1/3 of the tongue is done by what nerve?

A

CN IX

88
Q

The innervation for taste by the tongue is done by what nerve for the anterior 2/3?

A

Chorda tympani nerve (CN VII)

89
Q

The innervation for taste by the tongue is done by what nerve for the posterior 1/3?

A

CN IX

90
Q

The _______ is a mass of skeletal muscles covered by mucosa. It contains the sulcus terminalis, foramen cecum, and frenulum.

A

Tongue

91
Q

The anterior 2/3 of the tongue is located in the _______ _______ _______ and the posterior 1/3 is in the _________.

A

Oral cavity proper

Oropharynx

92
Q

All intrinsic and extrinsic muscles of the tongue are innervated by what?

A

CN XII (Hypoglossal nerve)

Anatomy II (11 decks)

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