Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ANAT 316 > Skull 1 > Flashcards

Skull 1 Flashcards

1
Q

How many bones does the human skull consist of?

A

22 bones (8 cranial, 14 facial) or 29 bones if you include the inner ear bones and hyoid bones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The cranial and facial skull bones are mostly connected together by ______ joints.

A

Ossified joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does the mandible articulate with?

A

The temporomandibular joint (synovial)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the skull divided into?

A

The skull is divided into the braincase (neurocranium) and the facial skeleton (viscerocranium)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What makes up the neurocranium? (8)

A

Frontal (1)
Parietal (2)
Temporal (2)
Occipital (1)
Sphenoid (1)
Ethmoid (1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What makes up the viscerocranium? (14)

A

Nasal bones (2)
Nasal conchae (2)
Maxillae (2)
Zygomatic (2)
Mandible (1)
Vomer (1)
Palatine (2)
Lacrimal (2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the 2 parts that consist within the neurocranium?

A
  1. Skullcap (calvarium)
  2. Skull base
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the 3 parts that make up the skullcap?

A
  1. Frontal bone
  2. Parietal bone
  3. Occipital bone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The 3 main sutures of the calvarium are…

A
  1. The coronal suture (between frontal and parietal)
  2. The sagittal suture (connecting the 2 parietal)
  3. The lambdoidal suture (running horizontally between the occipital and both parietal)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What 3 bones make up the neurocranium?

A
  1. Parietal
  2. Occipital (squamous portion, squama)
  3. Mastoid processes of the temporal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What 3 sutures make up the neurocranium?

A
  1. Sagittal
  2. Lambdoid
  3. Occipitomastoid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 4 fontanelle?

A
  1. Anterior fontanelle (1)
  2. Posterior fontanelle (1)
  3. Mastoid fontanelle (2)
  4. Sphenoid fontanelle (2)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the significance of the fontanelle?

A

Indirect assessment of intracranial pressure

Assessment of the newborn growth, hydration and bone ossification status

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the temporal fossa?

A

A shallow depression on the side of the skull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 4 boundaries of the temporal fossa?

A
  1. Medially (floor of the temporal fossa): Frontal, Parietal, Temporal, Sphenoid, Occipital bones
  2. Anteriorly: The frontal process of the zygomatic bone, the zygomatic process of the frontal bone
  3. Superiorly: Superior and inferior temporal lines
  4. Inferiorly: Zygomatic arch laterally, the infra temporal crest of the greater wing of the sphenoid cavity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the pterion?

A

An H-shaped region on the floor of the temporal fossa

17
Q

What are the 4 participating bones of the pterion?

A
  1. Frontal
  2. Parietal
  3. Greater wing of the sphenoid bone
  4. Squamous part of the temporal bone
18
Q

What 5 sutures converge at the pterion?

A
  1. Coronal
  2. Spheno-frontal
  3. Spheno-parietal
  4. Sphenoid-squamous
  5. Squamous (temporoparietal)
19
Q

Where is the pterion weak?

A

Where the temporal, parietal, frontal, and sphenoid bones intersect

20
Q

What could a blunt trauma to the head to the pterion?

A

Could fracture the skull at the pterion, which could rupture the middle meningeal artery resulting in epidural hematoma

21
Q

What are the 6 boundaries of the infratemporal fossa?

A
  1. Anteriorly: The infratemporal surface of the maxilla
  2. Posteriorly: The tympanic portion of the temporal bone and its styloid process
  3. Superiorly (roof): The infratemporal crest of the greater wing of the sphenoid, the infratemporal surface of the temporal squama
  4. Inferiorly (floor): The medial pterygoid muscle
  5. Medially: The lateral pterygoid plate
  6. Laterally: The ramps of the mandible
22
Q

What are the 7 bones in the inferior skull?

A
  1. Maxillae
  2. Palatine bones
  3. Vomer
  4. Sphenoid (pterygoid plates and processes, greater wings (infratemporal surface))
  5. Temporal bones
  6. Zygomatic bones
  7. Occipital bone (basilar, condylar, squamous)
23
Q

What are the 3 sutures of the inferior skull?

A
  1. Median palatine
  2. Transverse palatine
  3. Occipitomastoid
24
Q

What are the 8 openings of the inferior skull?

A
  1. Nasal choanae (posterior nasal aperture)
  2. Foramen lacerum
  3. Formane ovale
  4. Foramen spinosum
  5. Cartoid canal
  6. Jugular foramen
  7. Foramen magnum
  8. Condylar canals
25
Q

What are cranial fossas?

A

Levels in the cranial floor that contains depressions
for brain convolutions, grooves for blood vessels (intra- and extra-meningeal arteries & meningeal
sinuses) and numerous foramina

26
Q

What 3 bones make up the ANTERIOR cranial fossa?

A
  1. Frontal
  2. Ethmoid
  3. Sphenoid
27
Q

What are the 2 openings for the ANTERIOR cranial fossa?

A
  1. Optic canal
  2. Cribriform plate of ethmoid
28
Q

What are the 5 contents of the ANTERIOR cranial fossa?

A
  1. Frontal lobe of the cerebral cortex
  2. Olfactory bulb and olfactory tract
  3. Optic nerves
  4. Orbital gyri
  5. Falx cerebri (meninges)
29
Q

What are the 3 bones that make up the MIDDLE cranial fossa?

A
  1. Sphenoid
  2. Temporal
  3. Parietal
30
Q

What are the 6 openings to the MIDDLE cranial fossa?

A
  1. Superior orbital fissure
  2. Foramen rotundum
  3. Foramen ovale
  4. Foramen spinosum
  5. Foramen lacerum
  6. Carotid canal
31
Q

What are the 4 contents of the MIDDLE cranial fossa?

A
  1. Cranial nerves
    - Oculomotor
    - Trochlear
    - Trigeminal
    - Ophthalmic, Maxillary, Mandibular
    - Abducens
  2. Pituitary gland
  3. Internal carotid artery
  4. Temporal lobes of the brain
32
Q

What are the 3 bones that make up the POSTERIOR cranial fossa?

A
  1. Occipital
  2. Temporal
  3. Parietal
33
Q

What are the 4 openings to the POSTERIOR cranial fossa?

A
  1. Foramen magnum
  2. Internal acoustic meatus
  3. Jugular foramen
  4. Anterior condylar (hypoglossal) canal
34
Q

What are the 4 contents to the POSTERIOR cranial fossa?

A
  1. Brainstem and Cerebellum
    - Midbrain
    - Pons and Medulla Oblongata
  2. Cranial nerves
    - Facial
    - Vestibulocochlear
    - Glossopharyngeal
    - Vagus
    - Spinal Accessory
    - Hypoglossal
  3. Internal jugular vein
  4. Tentorium and Falx cerebelli

ANAT 316 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions