Brainscape's Knowledge GenomeTM

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


See full index

Anatomy > G44: Interior of the braincase > Flashcards

G44: Interior of the braincase Flashcards

1
Q

Calvaria

A

skull cap

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

Inner and outer plates of bones of the skull

A

compact bone

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

Diploe

A

a layer of spongy bone between inner an outer plates, containing bone marrow

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

Veins of the diploe

A

Valveless and courses through the diploe to drain into the dural venous sinuses, possible route of infection because they communicate with veins of face and scalp

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

Paranasal sinuses

A

areas where mucous membranes from the nasal cavity invade the spongy bone, forming air filled spaces with respiratory epithelial lining, secretions drain into nasal cavity

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

Anterior fontanelle

A

bregma; closes at 2 mo

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

Posterior fontanelle

A

lambda; closes at 6 mo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Superior sagittal sinus

A

a midline groove in the inner aspect of the calvaria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Arachnoid granulations

A

small depressions along the superior sagittal sinus groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Anterior cranial fossa accomodates

A

frontal lobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Anterior cranial fossa is formed by the

A

orbital plates of frontal bones, body and lesser wings of sphenoid bone, and cribiform plates and crista galli of ethmoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Anterior attachment point for the flax cerebri

A

crista galli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cribiform plates

A

(anterior fossa) lie on either side of the crista galli and contain numerous foramina for the transmission of the OLFACTORY NERVE FILA from the nasal cavity

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

Foramen Cecum

A

(anterior fossa) a small opening anterior to the crista galli that allows passage of an EMISSARY VEIN from the nasal cavity to the superior sagittal sinus (possible route of infection)

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

Middle Cranial fossa accomodates

A

the temporal lobes and pituitary gland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Middle cranial fossa is formed by..

A

body and greater wings of sphenoid and squamous and petrous part of temporal bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Sella turcica

A

body of the sphenoid that contains the hypophysial fossa, between anterior and posterior clinoid processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Sphenoid paranasal sinuses

A

lie immediately inferior to the sella turcica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Chiasmatic groove

A

anterior to the sella turcica, depression created by the optic chiasm and leads into the optic canals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Optic canal

A

transmits OPTIC N and OPTHALMIC a. from middle cranial fossa to the orbit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Carotid groove

A

lateral to the sella turcica, shallow depression caused by the internal carotid a.leads to carotid canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Superior Orbital fissure

A

slit-like opening that lies between the greater and lesser wing of sphenoid. Transmits: CN3, CN4, CN5-1, CN6 to the orbit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Foramen Rotundum

A

in greater wing, transmits: CN5-2 maxillary div to the pterygopalatine fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Foramen Ovale

A

greater wing, transmits: CN5-3 mandibular div to the infratemporal fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Foramen Spinosum

A

opening near spine of sphenoid, transmits: middle meningeal artery and vein from infratemporal fossa to interior braincase, grooves radiating out from foramen spinosum caused by meningeal vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Carotid canal

A

internal carotid a. enters the cavernous sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Foramen lacerum

A

filled with cartilage in living

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Hiatus and groove for greater and lesser petrosal nerves

A

cross the middle cranial fossa floor posterolaterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Depression for the trigeminal ganglion

A

between endosteal and meningeal layers or the dura, two layers of the dura enclose the ganglion creating the trigeminal cave of Meckel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

trigeminal cave of Meckel

A

two layers of the dura enclosing the trigeminal ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Posterior cranial fossa accommodates…

A

cerebellum, pons, and medulla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Posterior cranial fossa is formed by

A

occipital bone, petrous and mastoid process of temporal bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Clivus

A

a marked incline from the foramen magnum to the dorsum sellae, formed by the basilar portion of the occipital bone and sphenoid bone

34
Q

Foramen magnum

A

Transmits: spinal cord, vertebral a. and v. and spinal roots of CN 11

35
Q

Internal acoustic meatus

A

in the petrous portion of the temporal bone, transmits CN 7 and 8

36
Q

Jugular foramina

A

Transmits: CN 9,10,11, point at which the sigmoid and inferior petrosal sinus becomes the internal jugular v

37
Q

Hypoglossal canal

A

lateral aspect of foramen magnum, transmits CN12

38
Q

Pia mater

A

delicate thin directly adhered to the brain

39
Q

Arachnoid mater

A

transparent, separated from the pia mater by the subarachnoid space

40
Q

Subarachnoid space

A

contains CSF, and is traversed by trabeculae

41
Q

Trabeculae

A

traverse the subarachnoid space and connect the pia mater to the arachnoid mater

42
Q

Arachnoid granulations

A

folded, tuft-like projections of the arachnoid mater that protrude through the dura and drain the CSF into the dural venous system

43
Q

Dura mater

A

thick, dense fibrous layer, that is split into inner and outer layers

44
Q

Inner meningeal layer of the dura mater

A

closely associated with the arachnoid mater, separated by the subdural layer

45
Q

Outer endosteal layer of the dura mater

A

Adherent to the skull, forms the periosteum of the inner surface, called endocranium

46
Q

The dura has 4 folds:

A

Falx cerebri, tentorium cerebelli, falx cerebelli, and diaphragma sellae

47
Q

Falx cerebri

A

separates cerebrum hemispheres in the midline, attaches at crista galli and internal occipital protuberance

48
Q

Tentorium cerebelli

A

horizontal fold that separates occipital lobes from cerebellum, attaches to the anterior and posterior clinoid processes along the transverse sinus groove to the falx cerebri

49
Q

Tentorial notch

A

between the free edge of the tentorium cerebri and the clivus

50
Q

Tentorial herniation

A

intracranial pressure superior to the tentorium may force part of the temporal lobe through the notch

51
Q

Falx cerebelli

A

separates the cerebellar hemispheres; from the internal occipital protuberance to the foramen magnum

52
Q

Diaphragma sellae

A

circular horizontal fold over the hypophyseal fossa in the sella turcica with a central aperture for the stalk of the pituitary gland

53
Q

Dural venous sinuses

A

endothelium-lined spaces between dura (endosteal and meningeal or folded meningeal layers), carry blood and CSF from arachnoid granulations and drain into the internal jugular vein

54
Q

Superior sagittal sinus

A

in convex superior edge of the falx cerebri, courses posteriorly to the internal occipital protuberance to confluence of sinuses

55
Q

inferior sagittal sinus

A

inferior margin of falx cerebri to the point where tentorium and falx cerebri meet to drain into the straight dinus

56
Q

Straight sinus

A

where falx cerebri and tentorium meet, receives drainage from inferior sagittal sinus, and drains into the internal occipital protuberance (confluence of sinuses)

57
Q

Occipital sinus

A

within the falx cerebelli and drains into the confluence of sinuses

58
Q

Confluence of sinuses

A

dilation of sinuses at the internal occipital protuberance where the straight, superior sagittal and occipital sinuses converge

59
Q

Transverse sinuses

A

exit the confluence of sinuses laterally in the tentorium cerebelli

60
Q

Sigmoid sinus

A

continuation of the transverse sinus as it courses inferiorly to reach the jugular foramen

61
Q

Cavernous sinus

A

lie on either side of the sellae turcica and receives drainage from opthalmic v. and various sources. The sinus has CN3, 4, 5-1, 5-2 embedded in the dural lining and the internal carotid a. and CN 6 within the sinus
(reticulated inside appearance due to trabeculae)

62
Q

Superior petrosal sinus

A

from the cavernous sinus to the sigmoid sinus running along the superior petrosal ridge

63
Q

Inferior petrosal sinus

A

from the cavernous sinus to the jugular v, along the inferior edge of the petrosal ridge

64
Q

Main blood supply to the meninges

A

Middle meningeal artery (Foramen spinosum)

65
Q

Sensory innervation of meninges

A

CN5 and CN10

66
Q

Epidural hemorrhage

A

between calvaria and endosteal layer of dura mater, tear of middle meningeal a., slow compression of brain

67
Q

Subdural hemorrhage

A

between dura and arachnoid, slow due to low pressure

68
Q

Subarachnoid hemorrhage

A

common after a stroke - rapid

69
Q

Intracranial hemorrhage

A

bleed into brain tissue itself

70
Q

Cribiform plate transmits

A

olfactory CN ! fila

71
Q

Optic Canal transmits

A

Optic n. CN II and opthalmic a. and v.

72
Q

Superior orbital fissure transmits

A

Oculomotor CN3, Trochlear n. CN 4, Opthalmic div of trigeminal CN5-1, Abducens CN6

73
Q

Foramen rotundum

A

Maxillary div of Trigeminal n. CN 5-2

74
Q

Foramen ovale

A

Mandibular div of Trigeminal n. CN5-3

75
Q

Internal acoustic meatus

A

Facial n. CN7 and Vestibulocochlear n. CN8

76
Q

Jugular foramen

A

glossopharyngeal CN9 and Vagus CN10 and Accessory n. CN11

77
Q

Hypoglossal canal

A

Hypoglossal n. CN12

78
Q

A blow to the head may fracture the inner plate

A

bone fragments can lacerate blood vessels near inner surface of cranium

79
Q

grooves in the inner aspect of calvaria

A

for meningeal vessels and emissary veins

80
Q

Foramina of anterior cranial fossa

A

Foramina for olfactory nerve fila and foramen cecum

Anatomy (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions