Bones of Human Skull

Question 1

How many bones are in the human body?

Answer 1

206

Question 2

How many bones are in the human skull?

Answer 2

28

Question 3

Convexities

Answer 3

AKA: crest, eminence, protuberance, tubercle (smaller), ridge, process (extensions really far out from main bone)

extend outward from main bone

Question 4

Concavities

Answer 4

AKA: alveolus, fossa, fissure (indicated separation), grove, fovea, sinus, cavity

Hollow spaces, depressions

Question 5

Openings

Answer 5

AKA: aperture, foramen, meatus

Passages

Question 6

What two sections are formed from a midsaggital cut?

Answer 6

R and L halves

Question 7

What two sections are formed from a frontal cut?

Answer 7

front (anterior) and back (posterior) of head

Question 8

Roles of bones of neurocranium

Answer 8

hold, protect, surround the brain

Question 9

Roles of bones of the face

Answer 9

for facial features, important for digestion and respiration

Question 10

Bones of the neurocranium

Answer 10

frontal
parietal (paired)
occipital
sphenoid
ethmoid
temporal (paired)

Question 11

Suture lines of the cranium

Answer 11

sagittal (between two parietal bones)
coronal (between frontal and pariteal)
squamosal (between frontal, parietal, temporal)
lambdoid (between parietal bones and occipital)

formed by fibrous CT

Question 12

Frontal bone

Answer 12

protects brain from front, forms forehead and eyebrown area, forms part of roof of orbit

Question 13

Foramina in frontal bone

Answer 13

supraorbital foramen
infraorbital foramen
mental foramen

all in straight line on both sides of face

Question 14

Parietal bones

Answer 14

protects brain laterally and posteriorly

Question 15

Occipital bone

Answer 15

protects brain inferiorly

Question 16

Jugular foramen

Answer 16

allows passage of CN IX (glossopharyngeal) and jugular v, is between temporal and occipital bones, lateral to occipital condyle

Question 17

Sphenoid bone

Answer 17

main portion is body of sphenoid, contains sella turcica (little chair) which holds pituitary gland, cannot be seen from superior view

Question 18

Ethmoid bone

Answer 18

forms anterior cranial fossa (sphenoid, frontal, ethmoid bones), forms most of nasal cavity, inferior choncae is NOT part of ethmoid

Question 19

Temporal bones from lateral view

Answer 19

external auditory meatus
mastoid process (lateral)
articular eminence and fossa
zygomatic process
styloid process (medial)

Question 20

Temporal bones from below

Answer 20

stylomastoid fossa (passge for CN VII)
articular fossa and eminence
petrotympanic fissure (CN VII)

Question 21

Temporal bones from above

Answer 21

petrous portion or process

internal acoustic meatus (CN VII)

Question 22

Bones of the face

Answer 22

mandible (single)
vomer (single)
maxilla
palatine
zygomatic
nasal
lacrimal
conchae

Question 23

Bony processes of maxilla

Answer 23

frontal processes (nasal/frontal)
zygomatic processes
alveolar processes
palatal processes

Question 24

What forms the hard palate?

Answer 24

palatal processes (R and L), and palatine bones

Question 25

What is the name of the division between the hard and soft palate?

Answer 25

transverse/palatalmaxillary sutures

Question 26

If pain is relived by tipping the head forward, is it sinus pain or tooth pain?

Answer 26

sinus pain

Question 27

Nasal bones

Answer 27

form bony bridge of nose

Question 28

Lacrimal bones

Answer 28

hold tear glands

Question 29

Inferior tubinate

Answer 29

provide greater mucosa area on lateral nasal passageways

Question 30

Hyoid bone

Answer 30

attachment of supra and infra hyoid muscles