Brain, Meninges and Spinal Cord Flashcards Preview

Gross Anatomy Exam 4 > Brain, Meninges and Spinal Cord > Flashcards

Flashcards in Brain, Meninges and Spinal Cord Deck (42):
1

Which space contains CSF?

Subarachnoid space

2

Potential space (pathological)

Subdural

3

Dorsal sagittal sinus is contained in?

Falx cerebri

4

Falx cerebri extends into?

Longitudinal cerebral fissure

5

Tentorium cerebelli extends into?

Transverse cerebral fissure

6

What transverses the subarachnoid space?

Arachnoid trabeculae

7

2 subarachnoid enlargements

1. Cerebellomedullary cistern (cisterna magna)
2. Lumbar cistern

8

CSF exits cranial cavity via?

Lateral apertures or central canal

Arachnoid villi → dural venous sinus

9

Grey matter of brain

Basal nuclei

10

Frontal lobe is?

Motor

11

Parietal lobe is?

Sensory

12

Temporal lobe is?

Hearing

13

Occipital lobe is?

Vision

14

Basal nucleus aka?

Caudate nucleus

15

In the cerebrum, which matter is on the outside?

Grey matter

16

Association fibers

Within same hemisphere

17

Commissural fibers

Between hemispheres

18

Projection fibers

Ascending / descending fibers

19

Rhinencephalon

Olfactory brain

20

Epithalamus

Pineal gland (epiphysis) → part of diencephalon

21

Metathalamus

Part of diencephalon

Lateral geniculate body: visual relay

Medial geniculate body: auditory relay

22

What part of the mesencephalon is ventral to the aqueduct?

Cerebral peduncle

23

Nn. of mesencephalon

3 and 4

24

Cortex and medulla of cerebellum

Cortex: grey matter

Medulla: white

25

Cerebellar peduncles of metencephalon

Rostral: efferent axons from cerebllum to brainstem

Cd: connects medulla oblongata and cerebellum

Middle: continuous with transverse fibers of pons

26

Longitudinal fibers of the pons

Dorsal to transverse fibers, continue descending fibers of crus cerebri

27

Pyramids of myelencephalon

Cd. continuations of longitudinal fibers of pons

28

Nn. of myelencephalon

6-12

29

Dorsal horn

Afferent, interneurons and projection neurons

30

Horns are grey/white matter

Grey

31

Funiculus is grey/white matter

White

32

Dorsal funiculus

Ascending sensory (conscious proprioception)

33

Lateral funiculus

1. Ascending sensory
2. Descending motor (mainly flexors)

34

Ventral funiculus

Descending motor (mainly extensors)

35

Majority of brachial plexus originates from?

C6-T2

36

Majority of lumbosacral plexus originats from?

L4-S3

37

RAT signs of UMN disease

Reflex: normal or increased

Atrophy: mild and generalized

Tone: normal or increased

38

RAT signs of LMN disease

Reflex: absent or decreased

Atrophy: severe and specific

Tone: absent or decreased

39

Lesion in C1-5

No UMN function in thoracic or pelvic

LMN normal in all limbs → panniculus and perineal reflexes intact

40

Lesion in C6-T2

UMN function damaged to pelvic limbs

LMN only normal in pelvic limbs → loss of panniculus reflex

41

Lesion in T3-L3

UMN function damaged to pelvic limbs

LMN normal in all limbs → loss of panniculus reflex

42

Lesion in L3-S3

UMN function normal

LMN damage in pelvic limbs → may or may not lose perineal reflex (panniculus reflex normal)