Deeper Parts of the CNS (Lecture #3) Flashcards Preview

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Flashcards in Deeper Parts of the CNS (Lecture #3) Deck (43):
1

structures of the basal ganglia

caudate
putamen
globus pallidus

2

basal ganglia is made up of (axons/cell bodies)

cell bodies

3

function of basal ganglia

refining movement
help determine extent of speed of movement
help suppress unwanted movement

4

are cerebral hemispheres longer in the anterior-posterior direction or the superior-inferior direction?

anterior-posterior

5

internal capsule

axons going from thalamus to cerebral cortex
of
axons going from cerebral cortex to basal ganglia, thalamus, brainstem, or spinal cord

6

parts of internal capsule

anterior limb
genu
posterior limb

7

3 major parts of the diencephalon

thalamus
hypothalamus
epithalamus (pineal gland)

8

what is the largest portion of the diencephalon

thalamus

9

how many thalami does the brain have?

1 for each hemisphere

10

what is the only collection of cell bodies that can send info directly to the cerebral cortex?

thalamus

11

hypothalamus function

homeostasis

12

how many hypothalami do we have?

1

13

mammillary bodies

part of the hypothalamus involved in memory

14

epithalamus

thought to be involved in sleep-wake cycle

15

parts of brainstem

midbrain
pons
medulla

16

cranial nerves attached to cerebral hemispheres

CN I

17

cranial nerves attached to diencephalon

CN II

18

cranial nerves attached to midbrain

CN II, IV

19

cranial nerves attached to pons

CN V

20

cranial nerves attached to junction between pons and medulla

CN VI-VIII

21

cranial nerves attached to medulla

CN IX, X, XII

22

cranial nerves attached to spinal cord

CN XI

23

cranial nerves

I Olfactory
II Optic
III Oculomotor
IV Trochlear
V Trigeminal
VI Abducens
VII Facial
VIII Vestibulocochlear
IX Glossopharyngeal
X Vagus
XI Accessory
XII Hypoglossal

24

CN II function

(optic)
vision

25

CN III function

(oculomotor)
eye movement, makes pupil smaller

26

CN IV function

(trochlear)
eye movement

27

CN V function

(trigeminal)
face sensation
muscles of mastication

28

CN VI function

(abducens)
eye movement

29

CN VII function

(facial)
movement of face
taste

30

CN VIII function

(vestibulocochlear)
hearing
sensation of movement

31

CN IX, X function

(glossopharyngeal, vagus)
swallowing
gagging
voice quality

32

CN XI function

(accessory)
turn head
shrug shoulders

33

CN XII function

(hypoglossal)
move tongue

34

what is inside the brainstem?

1. cranial nerve nuclei
2. reticular formation
3. 3 long pathways
4. other nuclei

35

cranial nerve nuclei

cell bodies for muscles in neck and head
cell bodies for receiving sensory info from head and neck
parasympathetic cell bodies

36

reticular formation

net-like collection of cell bodies and axons in the center area of the brainstem

37

function of rostral part of reticular formation

maintaining consciousness

38

function of caudal part of reticular formation

motor and autonomic functions (swallowing, vomiting)

39

3 long pathways thru brainstem

1. corticospinal tract (always ventrally located)
2. dorsal column medial lemniscal pathway (medial)
3. anterolateral pathway (lateral)

40

other nuclei in brainstem

midbrain: red nucleus, substantia nigra
pons: pontine nuclei

41

how many lateral ventricles do we have?

one in each hemisphere

42

where is the third ventricle located

between thalami

43

where is fourth ventricle located

dorsal aspect of pons