Skull

Question 1

How many bones are there in the skull?

Answer 1

8

Question 2

What are the 8 bones of the skull?

Answer 2

1) . frontal
2) . ethmoid
3) . sphenoid
4) . occipital
5) . temporal (2)
6) . parietal (2)

Question 3

what are the 3 regions of the skull?

Answer 3

1) . roof (calvaria)
2) . floor (base)
3) . occiput (back)

Question 4

how many bones make up the viscerocranium (facial bones)

Answer 4

15

Question 5

what are the 15 bones in the viscerocranium?

Answer 5

1. mandible, ethmoid, vomer, maxillae (2),
2. inferior nasal conchae (2),
3. zygomatic (2),
4. palatines (2),
5. nasals (2),
6. lacrimal (2)

Question 6

Which bones make up the orbit?

Answer 6

1) . frontal,
2) . ethmoid,
3) . Lacrimal
4) . Sphenoid
5) . Zygomatic
6) . Palatine
7) . Maxilla

Question 7

roof of orbit

Answer 7

orbital plate of frontal bone

Question 8

medial wall of orbit

Answer 8

ethmoid and lacrimal bones

Question 9

posterior wall of orbit

Answer 9

Sphenoid bone

Question 10

lateral wall of orbit

Answer 10

Zygomatic bone

Question 11

floor of orbit

Answer 11

palatine and maxilla bones

Question 12

what bone does the optic canal pass through?

Answer 12

sphenoid

Question 13

what bone is referred to as the keystone bone of the cranial cavity?

Answer 13

Sphenoid bone

Question 14

what is found in the sella turcica?

Answer 14

pituitary gland

Question 15

where is the pituitary gland?

Answer 15

sella turcica of the sphenoid bone

Question 16

what passes through the superior orbital fissure?

Answer 16

CN 3, 4, 6, and CN V1

Question 17

what is CN V1?

Answer 17

ophthalmic nerve of CN 5 (trigeminal nerve)

Question 18

name the nerves that pass through the superior orbital fissure

Answer 18

1. occulomotor,
2. trochlear,
3. trigeminal (ophthalmic branch),
4. abducens

Question 19

what passes through the foramen rotundum?

Answer 19

CN V2 (trigeminal - maxillary branch)

Question 20

what passes through the foramen ovale?

Answer 20

CN V3 (trigeminal - mandibular branch)

Question 21

what passes through the foramen magnum?

Answer 21

1) . spinal cord and brain-stem,
2) . vertebral arteries,
3) . CN 11 comes into the skull this way

Question 22

where is the jugular foramen?

Answer 22

posterior cranial fossa between occipital and temporal bone

Question 23

what goes through the jugular foramen?

Answer 23

1) . internal jugular vein,
2) . CN 9
3) . CN 10,
4) . CN 11 (exits here)

Question 24

name the nerves that pass through the jugular foramen

Answer 24

1) . Glossopharyngeal,
2) . Vagus,
3) . Spinal Accessory

Question 25

what attaches at the temporal styloid process?

Answer 25

pharynx and larynx

Question 26

temporomandibular joint articulation

Answer 26

mandibular fossa, head of the mandible,

Question 27

what passes through the stylomastoid foramen?

Answer 27

CN 7 (exiting)

Question 28

what passes through the internal acoustic foramen (meatus)

Answer 28

CN 7 (exiting) and 8

Question 29

name the nerves passing through the internal acoustic foramen

Answer 29

Facial and vestibulocochlear

Question 30

mental protuberance is commonly called the \_\_\_\_\_

Answer 30

Chin

Question 31

where is the inferior orbital fissure?

Answer 31

posteriolateral aspect of maxilla in the orbit

Question 32

what passes through the inferior orbital fissure?

Answer 32

CN V2 branch and zygomatic nerve off of V2

Question 33

what forms the piriform aperture?

Answer 33

nasal and maxilla bone

Question 34

what composite structure do the nasal and maxilla bone form?

Answer 34

piriform apeture

Question 35

what forms the roof of the nasal cavity?

Answer 35

ethmoid bone

Question 36

what forms the lateral wall of the nasal cavity?

Answer 36

1) . ethmoid S/I conchae, 2) . palatine perp plate, 3) . inferior nasal conchae, 4) . maxilla

Question 37

what forms the floor of the nasal cavity?

Answer 37

1) . maxilla palatine plate, 2) . palatine bones

Question 38

what forms the medial wall (nasal septum) of the nasal cavity?

Answer 38

1) . vomer, 2) . ethmoid perp plate, 3) . septal cartilage

Question 39

what forms the anterior cranial fossa?

Answer 39

frontal, ethmoid, and sphenoid bones

Question 40

what forms the middle cranial fossa?

Answer 40

sphenoid and temporal bones

Question 41

what forms the posterior cranial fossa?

Answer 41

1. occipital 2. sphenoid 3. temporal bones

Question 42

what forms the superior and inferior temporal lines?

Answer 42

1. temporal, 2. parietal, 3. frontal, 4. zygomatic bones

Question 43

what forms the zygomatic arch?

Answer 43

1. zygomatic process of temporal bone 2. temporal process of zygomatic bone

Question 44

coronal suture

Answer 44

separates frontal and parietal

Question 45

sagittal suture

Answer 45

separates right and left parietal

Question 46

lambdoid suture

Answer 46

separates occipital from parietal

Question 47

occipitomastoid suture

Answer 47

separates occipital from temporal

Question 48

squamous (parietomastoid) suture

Answer 48

separates temporal from parietal

Question 49

lambda

Answer 49

intersection of lambdoid and sagittal sutures

Question 50

bregma

Answer 50

intersection of sagittal and coronal sutures

Question 51

pterion

Answer 51

"H" shaped intersection of coronal, squamous, and sphenoid bone

Question 52

vertex

Answer 52

most superior point of calvaria on sagittal suture

Question 53

asterion

Answer 53

junction of lambdoid, occipitomastoid, and squamous

Question 54

TMJ joint type

Answer 54

synovial; modified hinge

Question 55

unique feature of TMJ hinge

Answer 55

divided into superior and inferior articular cavities each with its own set of movements

Question 56

TMJ ligaments

Answer 56

1. lateral ligament, 2. stylomandibular ligament, 3. sphenomandibular ligament

Question 57

what does the lateral TMJ ligament prevent?

Answer 57

posterior dislocation

Question 58

what does the stylomandibular ligament prevent?

Answer 58

downward dislocation

Question 59

what does the sphenomandibular ligament prevent?

Answer 59

downward dislocation

Question 60

what movements occurs at the TMJ joint?

Answer 60

1. protrusion/retrusion, 2. elevation/depression, 3. ab-/adduction

Question 61

what movements occur in the superior articular cavity of the TMJ joint?

Answer 61

protrusion/retrusion

Question 62

what movements occur in the inferior articular cavity of the TMJ joint?

Answer 62

elevation/depression, ab-/adduction

Question 63

what are the composite structures within the skull?

Answer 63

1. orbit, 2. nasal cavity, 3. hard and soft palate, 4. S/I temporal lines, 5. A/M/P cranial fossa, 6. zygomatic arch, 7. piriform aperture, 8. cranial cavity

Question 64

Name the landmarks on the frontal bone

Answer 64

1. glabella: medially located projecting part of forehead 2. nasion (bridge of nose) 3. supraorbital margin

Question 65

How does dura mater attach to the ethmoid?

Answer 65

via the crista galli

Question 66

A fracture of the temporal bone will lead to bleeding from what artery?

Answer 66

medial meningeal artery, passes through the foramen spinosum

Question 67

What bones in the cranium have sinuses?

Answer 67

1. Frontal 2. Ethmoid 3. Sphenoid 4. Maxilla

Question 68

the carotid canal passes through what bone?

Answer 68

temporal

Question 69

what passes through the carotid canal?

Answer 69

1. internal carotid artery 2. sympathetic plexus

Question 70

what attaches to the soft palate?

Answer 70

uvula, it will flip up to cover the nasal cavity when you swallow

Question 71

what is the function of the S/M/I conchae?

Answer 71

direct, clean, filter, humidfy air

Question 72

what features of the sphenoid does CN 2 pass through?

Answer 72

optic canals and prechiasmatic sulcus

Question 73

what is another name for the external occipital protuberance?

Answer 73

inion

Question 74

what does the external acoustic meatus pass through?

Answer 74

petris part of the temporal bone

Question 75

what forms the infraorbital margin?

Answer 75

Maxillae and zygomatic bones

Question 76

how does the internal carotid artery enter the skull?

Answer 76

foramen lacerum