AP 2.8 - Topography of the brain and spinal cord

24

Midbrain

32

Pons

23

Medulla oblongata

4

Clivus

What does the brainstem lie on in the occipital bone

Clivus

5

Cerebellum

10

Foramen magnum

What pathway is the inferior colliculus a part of?

Auditory pathway

What cortex does the inferior colliculus connect the inner ear to

Auditory cortex

17

Inferior colliculus

17

Inferior colliculus

41

Superior colliculus

41

Superior colliculus

What is the superior colliculus play a key component in

Eye movements, visual processing and behaviour

5

Cerebral aqueduct

43

Tectum of midbrain

44

Tegmentum of midbrain

Is the tectum anterior or posterior to the cerebral aqueduct

Posterior

47

Trochlear nerve

Which part of the midbrain does the trochlear nerve exit from

Dorsal aspect of midbrain inferior to inferior colliculi

What is the site where the midbrain and pons are connected called

Pontomesencephalic junction

3

Dorsal median sulcus

What is X

Dorsal median sulcus

What is X

Fasciculus gracilis

What is X

Fasciculus cuneatus

What are the fasciculus gracilis and fasciculus cuneatus together called

Dorsal column

Are the dorsal columns ascending or descending tracts

Ascending tracts

Where do the ascending tracts begin in

Spinal cord

Where do the ascending tracts terminate in

Medulla in nucleus gracilis and nucleus cuneatus

5

Gracile tubercle

1

Cuneate tubercle

What is X

Fasciculus gracilis

What is X

Fasciculus cuneatus

What is X

Gracile tubercle

What is X

Cuneate tubercle

What is X

Posterior median sulcus

4

4th/fourth ventricle

4

Floor of fourth ventricle

What forms the floor of the 4th ventricle

Medulla caudally, pons rostrally

What forms the roof/dorsal wall of the 4th ventricle

Cerebellar peduncles

24

Middle cerebellar peduncle

What is the 4th ventricle connected to the subarachnoid space of the cerebellopontine angle by?

Lateral aperture of 4th ventricles/Foramen of Luschka

X

Lateral aperture of 4th ventricle/foramen of luschka

X

Median aperture of 4th ventricle/foramen of magendie

What does the median aperture of the fourth ventricle connect the 4th ventricle to which part of the subarachnoid space?

Cisterna magna

2

Cisterna magna

4

Cisterna magna

What are the lateral walls of the rostral part of the 4th ventricle made up of?

Superior and inferior cerebellar peduncles

X

Superior cerebellar peduncle

X

Inferior cerebellar peduncle

In the rostral pons, where do the walls of the 4th ventricle converge at

Pontomesencephalic junction

What is the line referring to

Pontomesencephalic junction

4

Cerebral aqueduct

5

Cribiform plate

6

Crista galli

17

Greater wing of sphenoid bone

32

Lesser wing of sphenoid bone

38

Pituitary fossa

34

Optic canal

42

Superior orbital fissure

12

Foramen ovale

13

Foramen rotundum

14

Foramen spinosum

27

Hypoglossal canal

11

Foramen magnum

19

Superior nasal concha

19

Middle nasal concha

1

Ethmoidal air sinuses

6

Frontal air sinus

11

Lateral pterygoid plate

13

Medial pterygoid plate

19

Supra-orbital notch

29

Occipital condyle

48

Superior nuchal line

Which part of the ethmoid bone does the olfactory nerve exit

Cribiform plate

Which part of the ethmoid bone does the falx cerebri attach

Crista galli

Which part of the frontal bone does the supra-orbital nerve travel through

Supra-orbital notch

What cranial nerves travel through the superior orbital fissure

CN III/3, IV/4, V1/ophthalmic, VI/6

What travels through the hypoglossal canal

Hypoglossal nerve

What travels through the formen magnum

Spinal cord, accessory nerve

What muscles attach to the superior nuchal line

Occipitalis and trapezius

37

Zygomatic process of temporal bone

What muscle attaches to the zygomatic process of the temporal bone

18

Mastoid process 

37

Petrous part of temporal bone

28

Internal auditory meatus

9

Mandibular fossa

3

Carotid canal

46

Styloid process

47

Stylomastoid foramen

What is circle in blue

Inner ear

16

Middle ear

What is X

Foramen for emissary vein

18

Nasal bone

8

Crus cerebri

What does the circled area refer to

Interpeduncular fossa

26

Oculomotor nerve

What are the nerve fibres descending through the crus cerebri 

Corticobulbar fibres, corticospinal fibres

What type of fibres are the corticobulbar fibres

Motor fibres

What cranial nerve supplies muscles of facial expression

CN 7