Exam #3: Lab V Flashcards Preview

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Flashcards in Exam #3: Lab V Deck (50):
1

What artery supplies the lateral surface of the cortex?

MCA

2

What is the function of the association tracts?

Sending information from one part of the hemisphere to another part of the IPSILATERAL hemisphere

3

List the three association tracts.

1) Superior longitudinal fasiculus
2) Uncinate fasciculus
3) Occipitofrontal fasciculus

4

What structure lies deep to the association tracts?

Internal capsule

5

What direction are the fibers of the internal capsule directed?

Vertically

6

What is the corona radiata?

Extension of the internal capsule that spreads toward the cortex

7

What are the optic radiations?

Tracts that carry information from the thalamus to the visual cortex

8

What two basal nuclei is the anterior limb of the internal capsule associated with?

1) Caudate (Head of the Caudate)
2) Putamen

9

What nuclear group sits lateral to the third ventricle?

Thalamus

10

What is the wall between the lateral ventricles?

Septum pellucidum

11

What are commisural tracts?

White matter tracts that carry information from hemisphere to CONTRALATERAL hemisptere

12

What does the anterior white commissure connect?

Frontal and temporal lobes

13

Where is the external capsule?

OUTSIDE of the basal nuclei (vs. the internal capsule that is inside the basal nuclei)

14

What is the fornix?

Tract that runs from the mammillary bodies to the limbic lobe

15

Where can you find the column of the fornix?

Inferior to the septum pellucidum

16

What is the region of the cortex that surround the corpus callosum?

Cingulate gyrus

17

When the cingulate gyrus narrow anteriorly, what is this structure called?

Isthmus of the cingulate gyurs

18

What does the isthmus of the cingulate gyrus connect to?

Parahippocampal gyrus

19

What is the most medial aspect of the parahippocampal gyrus called?

Uncus

20

What structure is deep to the uncus?

Amygdala

21

What structure are the mammillary bodies part of?

Hypothalamus

22

What white matter attaches the hypothalamus to the limbic system?

Fornix

23

In an anterior coronal section, what basal nuclei will border the lateral ventricle?

Caudate (Head of the Caudate)

24

How does the anterior limb of the internal capsule appear on coronal section?

"Striated"

*Bordered by the Head of the Caudate & the Putamen

25

What is the nucleus accumbens?

Fusion of the head of the caudate with the putamen

*Important to motivation and reward (addiction)

26

What white matter tract is lateral to the thalamus?

Posterior limb of the Internal Capsule

27

What are disorders of the amygdala association with?

- Olfactory & gustatory hallucinations
- De ja vu

28

What structure is posterior to the amygdala?

Hippocampus

29

What is the hallmark of the midbrain?

Red Nucleus

30

What structure sits superior and lateral to the Substantia Nigra?

Subthalamic Nuclei

31

What structure sits between the superior colliculi?

Epithalamus

32

What part of the corpus callosum is anterior? What part of the corpus callosum is posterior?

Anterior= genu
Posterior= splenium

33

What is the extreme capsule?

White matter association tract that is lateral to the claustrum

34

What is the claustrum?

Grey matter strip lateral to the external capusle

35

Where is the tail of the caudate?

Posterior aspect of the lateral ventricle

36

What structure sits posterior to the optic chiasm?

Stalk of the pituitary/ infundibulum

37

What is the difference between a T1 & T2 weighted image on MRI?

T1= enhances fluid

38

What space does CSF flow through in the brain and spinal cord?

Subarachnoid space

39

What makes up the basis pontis?

Transverse white matter fibers

40

What artery sits in the midline of the pons?

Basilar artery

41

What is the hallmark for the dentate nucleus on cross-section?

It looks like a row of teeth

42

What fissure separates the cerebellum from the occipital lobe?

Transverse fissure

****Tentori cerebellum is located here

43

What does the primary fissure separate?

Anterior lobe & posterior lobe of the cerebellum

44

What does the posterolateral fissure separate?

Posterior lobe from the nodulus

45

What are the grooves in the cerebellum on mid-sagittal section called?

"Folia" b/c they look like leaves

46

What is the medulla of the cerebellum?

White matter of the cerebellum

47

What is the flocculus inferior and lateral to?

MCP

48

What is the flocculus connected to?

Nodulus (which is more midline)

49

What is the flocularnodular lobe responsible for functionally?

Balance & posture

50

What cranial nerve is associated with the flocularnodular lobe?

CN VIII