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WUCO H&N Anatomy > Temporal Bone > Flashcards

Temporal Bone Flashcards

1. Identify the external features of the temporal bone 2. Identify the internal features of the temporal bone 3. Identify the auditory ossicles associated with the temporal bone 4. Identify the bones that articulate with the temporal bone 5. Identify the sutures of the temporal bone

1
Q

Temporal bone is important for

A

Mastication, taste, hearing, and ability to maintain balance

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2
Q

The temporal bone is composed of these 2 parts

A 
Squamous portion (body)
Petrous portion
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3
Q

Petrous portion houses the ____ and helps form the _____

A

inner ear, basicrania

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4
Q

T/F: The petrous portion is one of the thickest and toughest parts of the cranium

A

True

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5
Q

The 5 bones the temporal bone articulates with

A 
occipital
parietal
Sphenoid
zygomatic
Mandible
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6
Q

Located immediately behind the mastoid process. Origin site for posterior belly of the digastric muscle

A

Digastric groove

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7
Q

Air-cell filled projection of bone. Projects downward behind the ear and serves as an attachment site for the posterior belly of the digastric and the sternocleidomastoid muscles. The air cells help equalize pressure in the middle ear

A

Mastoid Process

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8
Q

An indentation in the temporal bone, forms the jugular foramen when paired with the jugular notch of the occipital bone

A

Jugular notch

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9
Q

Medial and anterior to the jugular notch; it is the entrance point of the internal carotid artery

A

Carotid foramen

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10
Q

Downward-projecting fingerlike extensions of the temporal bone. It serves as a point of attachment for al head and neck muscles with the word stylo in them

A

Styloid process

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11
Q

Immediately posterior to the styloid process and anterior to the mastoid process. It allows for the motor branch of the facial nerve to exit out of the cranium to innervate the muscles of the facial expression

A

Stylomastoid foramen

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12
Q

What nerve runs through stylomastoid foramen

A

motor branch of the facial nerve

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13
Q

Around which the fleshly auricle of the ear is attached to channel sound into the inner ear

A

External auditory meatus

External acoustic meatus (EAM)

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14
Q

The half of the temporal bone that joins with the malar/zygomatic bone to form the zygomatic arch, commonly called the cheek bone

A

Zygomatic process of temporal bone

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15
Q

The depression into which the mandibular condyle will articulate

A

Temporomandibular Fossa

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16
Q

Opening within the petrous part of the temporal bone to allow CN VII (facial nerve) and CN VIII (vestibulocochlear nerve) to exit the cranial cavity

A

Internal acoustic/auditory meatus/foramen

17
Q

CN VII

A

Facial nerve

18
Q

CN VIII

A

Vestibulocochlear nerve

19
Q

One of the strongest and thickest parts of the skull. It houses the middle and inner ear structures that allow for hearing and balance

A

Petrous portion of temporal bone

20
Q

Formed by the jugular notch of the temporal bone and the jugular notch of the occipital bone

A

Jugular foramen

21
Q

Allows for the internal jugular vein to exit the cranial cavity

A

Jugular foramen

22
Q

Allows for Glossopharyngeal nerve (CN IX), the vagus nerve (CN X), and the spinal accessory nerve (CN X1) to exit the skull

A

Jugular foramen

23
Q 
These structures run through it
Glossopharyngeal Nerve (CN IX)
Vagus Nerve (CN X)
Spinal Accessory Nerve (CN X1)
Internal Jugular Vein
A

Jugular foramen

24
Q

Internal carotid artery enters the skull through this foramen

A

Carotid Foramen

25
Q

Trigeminal ganglion rests on the temporal bone

A

Trigeminal depression

26
Q

In the tympanic cavity is housed by the

A

Petrous part of the temporal bone

27
Q

“hammer”
First ossicle in the chain
Attached to the tympanic membrane
Rounded head articulate with the incus

A

Malleus

28
Q

“anvil”
Located in the middle of the chain
Articulated with both the malleus and staped

A

Incus

29
Q

“stirrup”
Located at the end of the chain
Base is attached to the oval window

A

Stapes

30
Q

5 bones the temporal bone articulates with

A 
Parietal
Occipital
Sphenoid
Mandible
Zygomatic
31
Q

Name the sutures of the temporal bone

A

Squamosal (parietal to temporal)
Occipitomastoid (temporal to occipital)
Sphenosquamosal (sphenoid to temporal)
Zygomaticotemporal (zygomatic to temporal)

32
Q

This part of the temporal bone is pneumatized

A

Mastoid

33
Q

What foramen is found in the temporal bone?

A

carotid canal

Internal acoustic foramen/meatus

WUCO H&N Anatomy (28 decks)

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