Brainscape's Knowledge GenomeTM

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


See full index

CHI282 - Human Anatomy 2 > Lecture 3- The Cerebellum > Flashcards

Lecture 3- The Cerebellum Flashcards

0
Q

Two other ways it differs from the cerebral cortex

A
  1. None of its activity directly contributes to consciousness
  2. Its hemispheres possess ipsilateral ( same side) representation of body parts.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Where is the cerebellum located?

A

Posterior cranial fossa, under tentorium cerebelli, Posterior/ superior border of the 4th ventricle

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

The cerebellum has lots more …….., compared to the cerebral cortex and therefore has lots of …..?

A

Grey matter

Cell bodies

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

The cerebellum is very small at birth but develops rapidly in the
first …………

A

Six years

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

At ages 1-6 the Cerebellum codes movement sequences of what?

A

running, climbing, jumping

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

The cerebellum develops from the?

A

Mesencephalon

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

The cerebellum forms the roof of which ventricle?

A

Fourth ventricle

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

The cerebellum is Separated from occipital and temporal lobes by
the?

A

tentorium cerebelli

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

The cerebellum consists of folia and fissures on its?

A

surface

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

The cerebellum is made up of two lateral lobes which are called?

A

cerebellar hemispheres

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

The cerebellum is 10% of total brain mass, but contains ……. of total neurons?

A

50%

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

The cerebellum is part of which system. E.g sensory or motor?

A

Motor

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

Cerebellum indirectly affects movements on which side of the body?

A

Ipsilateral (same side)

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

The anterior lobe of the cerebellum is located where?

A

Anterior to primary fissure

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

The cerebellum has inputs from the …………, so it can monitor the
position of body in space

A

Vestibular system

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

Functions of the cerebellum

• Three primary functions:

A
  1. maintenance of posture and balance
  2. maintenance of muscle tone
  3. Coordinates smooth movements by influencing timing and force of contractions of voluntary muscles.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the function of the anterior lobe of the cerebellum?

A

Maintains coordination of limb movements while movements are being executed

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

The anterior lobe receives input from what three things?

A 
limb (chiefly lower limb) 
muscle spindles (stretch receptors) 
Golgi tendon organs via the spinocerebellar tracts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The anterior lobe has a role in regulating what?

A

Muscle tone

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

The Flocculonodular lobe consists of what two structures?

A
  1. nodulus (of the vermis)

2. flocculus (most ancient part of cerebellum)

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

The Flocculonodular lobe receive input from the?

A

vestibular system so it can monitor the position of the body in space

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

The Flocculonodular lobe play a role in maintenance of what three things?

A

1.Balance
2.Posture
3 Eye movement

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

The posterior lobe lies between the primary fissure and the?

A

posterolateral fissure

23
Q

The posterior lobe receives massive input from the?

A

Cerebral cortex

24
Q

The posterior lobe plays a role in co-ordination of?

A

Voluntary motor activity

25
Q

The posterior lobe stores all sequential components of?

A

skilled movements

26
Q

Functions of cerebellar peduncles

A

Tracts of afferent & efferent axons enter or leave

the cerebellum through the cerebellar peduncles

27
Q

Superior cerebellar peduncle: connects cerebellum to?

A

pons and midbrain

28
Q

Middle cerebellar peduncle: connects the cerebellum to the?

A

Pons

29
Q

Inferior cerebellar peduncle: connects the cerebellum to the?

A

Medulla

30
Q

Superior cerebellar peduncle: contains mostly ……. (“going out”) tracts from ……..?

A

Efferent

Cerebellar nuclei

31
Q

Middle cerebellar peduncle: contains only ……….. (“coming in”) tracts

A

Afferent

32
Q

Inferior cerebellar peduncle: contains ……… ……….tracts

A

Afferent and efferent tracts from spinocerebellar tracts

33
Q

Superior cerebellar peduncle, Efferent: travel from?

A

Cerebellum to midbrain

34
Q

Middle cerebellar peduncle Afferent: travel from

A

Pons to cerebellum

35
Q

Inferior cerebellar peduncle Afferent & efferent: between the?

A

cerebellum and medulla oblongata

36
Q

The efferent system travels from the cerebellum to the thalamus (thalamic nuclei) and then to the?

A

Prefrontal cortex

37
Q

The affording system travels from the prefrontal cortex, to the pons (pontine nuclei) and then to the?

A

Cerebellum

38
Q

The afferent tracts :
Dorsal spinocerebellar tract: carries proprioceptive information from ….…..and tendon organs of individual lower limb
muscles to the ……….via the………

A

Muscle spindles
Cerebellum
Inferior cerebellar peduncle

39
Q

Afferent tracts:

Cuneocerebellar tract: carries equivalent information from ………..which also enters via ………?

A

Upper limb

Inferior cerebellar peduncle

40
Q

Afferent tract

Trigeminocerebellar tract: carries info from ……, masticatory and external ocular muscles

A

TMJ

41
Q

Afferent tract

Ponto-cerebellar tract: carries info from ……….. to cerebellum through ………………..?

A

Motor cortex

contralateral middle cerebellar peduncle

42
Q

Affording tract
Vestibulocerebellar tract: vestibulocerebellar impulses from …………… carry info about position and movement of …… and enter cerebellum through ………..?

A

Vestibular nuclei
Head
Inferior cerebellar peduncle

43
Q

The cerebellar nuclei Contain most of the cell bodies of ………… neurons of the cerebellum

A

Efferent

44
Q

Cerebellar nuclei receive projections from……….. cells in
cerebellar cortex.

A

Purkinje

45
Q

Four nuclei containing most of efferent neurons:

A
  • Dentate nucleus
  • Emboliform nucleus
  • Globose nuclei
  • Fastigial nucleus
46
Q

The Emboliform nucleus and the Globose nuclei form the?

A

Interposed nuclei

47
Q

Dentate nucleus is the most lateral and largest – input

from …………?

A

lateral parts of hemispheres

48
Q

Fastigial nucleus is most medial – input from ?

A

vermis & flocculonodular lobes

49
Q

Cerebellar nuclei project to motor centres of the ………, brainstem and ………?

A

Thalamus

Spinal cord

50
Q

The cerebellar cortex has three layers, what are these?

A
  • Molecular layer (outer layer)
  • Purkinje cell layer
  • Granular layer
51
Q

The cerebellum is supplied by which three arteries?

A
  • Posterior inferior cerebellar artery (PICA)
  • Anterior inferior cerebellar artery (AICA)
  • Superior cerebellar artery (SCA)
52
Q

Does the cerebellum initate movements?

A

No

53
Q

What type of fibres (afferent/efferent) does the superior cerebellar peduncle carry?

A

Efferent

54
Q

What type of information does the spinocerebellar tract carry

A

Afferent

55
Q

Which is the most superficial layer of the cerebellar cortex?

A

Molecular

56
Q

Which is the largest cerebellar nucleus?

A

Denate

CHI282 - Human Anatomy 2 (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions