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Anatomy II > Lecture 16 (Exam 2) > Flashcards

Lecture 16 (Exam 2) Flashcards

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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
This part of the inner resembles a snail shell, has three turns, and the round window (fenestra cochlea).
Cochlea
26
This part of the inner ear contains the utricle and saccule.
Vestibule
27
This innervates the inner ear.
Vestibulocochlear (auditory) nerve (CN VIII)
28
These are part of the inner ear and are arranged in three planes. They have an anterior, posterior, and lateral component.
Semicircular canals
29
The semicircular canals open into the ________ and are dilated at one end to form the ________.
Utricle | Ampulla
30
The ampulla contains the _______ _______, which senses ________ ________.
Crista ampullaris | Rotational acceleration
31
The utricle and saccule each have ________ which senses ________ ________ and pull of ________.
Macula Linear acceleration Gravity
32
The roof of the orbit consists of what?
Orbital plate of frontal bone | Lesser wings of sphenoid
33
What is a special feature of the roof of the orbit?
Fossa for lacrimal gland
34
What is the roof of the orbit related to?
Frontal cerebral lobes
35
The floor of the orbit consists of what?
Orbital plate of maxilla Zygomatic Orbital process of palatine
36
What is the floor of the orbit related to?
Maxillary sinus
37
What are the special features of the floor of the orbit?
Infraorbital groove and canal
38
What passes through the infraorbital groove and canal?
Infraorbital nerve | Infraorbital artery
39
The infraorbital nerve is a continuation of CN _____.
V2 (Maxillary nerve)
40
The infraorbital artery is a branch of the...
External carotid artery
41
The medial wall of the orbit consists of what?
Lacrimal Frontal Ethmoid
42
What is the medial wall of the orbit related to?
Ethmoid air cells Sphenoid sinus Nasal cavity
43
What are the special features of the medial wall of the orbit?
Fossa for lacrimal sac | Opening for nasolacrimal canal
44
The lateral wall of the orbit consists of what?
Zygomatic Greater wing of sphenoid Frontal
45
What is the lateral wall of the orbit related to?
Temporal fossa containing temporalis muscle | Middle cranial fossa
46
The external features of the eye include what?
Conjunctiva | Eyelids
47
What are the components of the eyelids?
Tarsal plates | Tarsal glands
48
The lacrimal apparatus of the eye consists of what?
Lacrimal papilla and puncta Lacrimal canaliculi and sac Nasolacrimal duct
49
The sympathetic supply to the lacrimal apparatus is from T1 to the ________ ________ _________ and then to the ________ ________.
Superior cervical ganglion | Lacrimal gland
50
The parasympathetic supply to the lacrimal apparatus is from the lacrimal nucleus via CN VII to the _________ ________ then to the lacrimal gland courtesy of _______.
Sphenopalatine ganglion | CN V
51
The superior orbital fissure has what pass through it?
``` CN III CN IV CN V1 (Ophthalmic) Branches of CN V1 -- Frontal; Lacrimal; Nasociliary CN VI Superior ophthalmic vein ```
52
The optic canal has what pass through it?
CN II | Ophthalmic artery
53
The anterior and posterior ethmoidal foramina are the exit for anterior and posterior ________ ________.
Ethmoidal nerves
54
The inferior orbital fissure has what pass through it?
CN V2 | Branches of CN V2 -- Infraorbital; Zygomatic; Orbital
55
The six extrinsic muscles of the eye originate from a common annular tendon and control what?
Movement of the eyeball
56
Which extrinsic muscles of the eye are innervated by CN III?
Inferior oblique Superior rectus Medial rectus Inferior rectus
57
Which extrinsic muscle of the eye is innervated by CN IV?
Superior oblique
58
Which extrinsic muscle of the eye is innervated by CN VI?
Lateral rectus
59
This eye muscle raises the upper eyelid and is innervated by CN III.
Levator palpebrae superioris
60
In the eye, parasympathetics go from the Edinger-Westphal nucleus to ciliary ganglion then the _______ _______ muscle.
Sphincter pupillae
61
In the eye, sympathetics go from T1 to superior cervical ganglion then the ________ ________ muscle.
Dilator pupillae
62
This extrinsic muscle of the eye abducts, elevates, and laterally rotates the eyeball.
Inferior oblique
63
This extrinsic muscle of the eye elevates, adducts, and medially rotates the eyeball.
Superior rectus
64
This extrinsic muscle of the eye adducts the eyeball.
Medial rectus
65
This extrinsic muscle of the eye depresses, adducts, and rotates the eyeball laterally.
Inferior rectus
66
This extrinsic muscle of the eye abducts, depresses, and medially rotates the eyeball.
Superior oblique
67
This extrinsic muscle of the eye abducts the eyeball.
Lateral rectus
68
What provides sensory innervation to the orbit?
``` Optic nerve Ophthalmic nerve (V1) and its branches ```
69
What are the branches of the ophthalmic nerve (V1) that provide sensory innervation to the orbit?
Lacrimal nerve Nasociliary nerve Frontal nerve
70
The nasociliary nerve (from V1) has branches that provide sensory innervation to the orbit. These branches are...
Infratrochlear nerve | Anterior and posterior ethmoidal nerves
71
The frontal nerve (from V1) has branches that provide sensory innervation to the orbit. These branches are...
Supratrochlear nerve | Supraorbital nerve
72
In the oral cavity, the anterior 2/3 of palate, palatine folds of maxillae, and palatines are part of the _______ _______.
Hard palate
73
In the oral cavity, the posterior 1/3 of palate and fibromuscular fold are part of the _______ _______.
Soft palate
74
The maxillary bone and mandibular bone hold _______ in the oral cavity.
Teeth
75
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.
Parotid duct
76
The oral cavity is bounded by teeth and gums, hard/soft palates, and leads to the ________ and ________.
Pharynx (oropharynx) | Uvula
77
In the oral mucous membranes, sensory innervation is done by what nerves?
``` CN V2 (Maxillary nerve) and branches CN V3 (Mandibular nerve) and branches ```
78
In the oral mucous membranes, sensory innervation is done by what branches of CN V2?
Greater and lesser palatine nerves | Nasopalatine nerves
79
In the oral mucous membranes, sensory innervation is done by what branches of CN V3?
Lingual nerve | Buccal nerve
80
This sensory nerve innervates the floor of the mouth.
Lingual nerve
81
This sensory nerve innervates the vestibule and cheek.
Buccal nerve
82
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.
Submandibular | Sublingual
83
In the oral mucous membranes, motor parasympathetics are from the inferior salivary nucleus via CN IX, to the otic ganglion, then to the _______ gland.
Parotid
84
The maxillary teeth are innervated by what?
Superior alveolar branches of CN V2
85
The mandibular teeth are innervated by what?
Inferior alveolar branches of CN V3
86
The general sensory innervation of the anterior 2/3 of the tongue is done by what nerve?
Lingual nerve (from CN V3)
87
The general sensory innervation of the posterior 1/3 of the tongue is done by what nerve?
CN IX
88
The innervation for taste by the tongue is done by what nerve for the anterior 2/3?
Chorda tympani nerve (CN VII)
89
The innervation for taste by the tongue is done by what nerve for the posterior 1/3?
CN IX
90
The _______ is a mass of skeletal muscles covered by mucosa. It contains the sulcus terminalis, foramen cecum, and frenulum.
Tongue
91
The anterior 2/3 of the tongue is located in the _______ _______ _______ and the posterior 1/3 is in the _________.
Oral cavity proper | Oropharynx
92
All intrinsic and extrinsic muscles of the tongue are innervated by what?
CN XII (Hypoglossal nerve)

Anatomy II (11 decks)

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