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Flashcards in FINALS: BRAIN LEC Deck (79):
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Part of cns that lies inside the cranial cavity

Brain

1

Brain is continuous with the Spinal cord through the

Foramen magnum

2

3 parts of the brain

Forebrain
Midbrain
Hindbrain

3

Forebrain

Cerebrum
Diencephalon

4

Cavities in the forebrain

3rd
Right and left lateral ventricle

5

Cavities in the Midbrain

Cerebral aqueduct

6

Hindbrain

Pons
Medulla oblongata
Cerebellum

7

Cavities in the hindbrain

4th ventricle
Central canal

8

Largest part of the brain BIG BRAIN

Cerebrum

9

2 cerebral hemispheres is connected by

Corpus callosum

10

Surface layer of each hemisphere composed of gray matter

Cortex

11

Large sulci or fissures divide the hemisphere into LOBES

Sulci

12

Cental sulcus

Frontal
Parietal

13

Lateral sulcus

Frontal
Parietal
Temporal

14

Parieto occ sulcus

Parietal
Occ

15

Ant to central sulcus

Precentral or motor gyrus

16

Control the voluntary movts on the opp side of the body

Precentral or motor gyrus

17

Post to central sulcus

Postcentral or sensory gyrus

18

Interpret sensations of pain, temp, touch, pressure

Postcentral gyrus

19

Lobe that is highly motor

Frontal

20

Lobe that is highly sensory

Parietal

21

Cortical regions in parietal lobe
- understanding, speech

Somatosensory assoc area

22

Loc in parietal and temporal lobe along w auditory assoc area and primary auditory cortex
- hear sounds plus meaning

Gen interpretative area or Wernickes area

23

Interpret hearing or sounds

Saa
Gia

24

Responsible for motor speech
Give signals to larynx to produce words

Brocas area

25

Posterior pole and medial aspect of the cerebral hemisphere

Visual area

26

In the region of the CALCARINE SULCUS receiving area for visual impressions(occ lobe)

Visual area

27

Cavity present within each cerebral hemisphere

Lateral ventricle

28

Lateral gentricle communicates with the 3rd through the

Interventricular foramina

29

Large mass of gray matter lies on either side of the 3rd ventricle
-relay station on the afferent sensory pathway to the cerebral cortex

Thalamus

30

Forms the lower part of the lateral wall and floor of the 3rd ventricle

Hypothalamus

31

Narrow part of the brain
Passes through the TENTORIAL NOTCH and CONNECTS forebrain to hindbrain

Midbrain

32

2 lateral halves (cerebral peduncles) divided into:

Anterior part (crus cerebri)
Post part (tegmentum)

33

Pigmented band of gray matter

Substantia nigra

34

Narrow cavity that connects 3rd and 4th ventricles

Cerebral aqueduct

35

Post to the cerebral aqueduct

Tectum

36

4 small surface swellings

2 sup and 2 inf colliculi

37

Small granular struc that lies bet sup colliculi, calcifies in middle age and can be visualized in radiographs

Pineal body

38

Situated on the ant surface of cerebellum below midbrain and above the medulla

Pons

39

Composed of nerve fibers wc connect the 2 halves of the cerebellum

Pons

40

pons contain - and - fibers connecting the forebrai, midbrain and spinal cord

Ascending and descending fibers

41

Cortical region in temporal lobe: rel to ears

Auditory cortex

42

Inf to corpus callosum
Biggest ventricle

Lateral ventricle

43

3 horns of lateral ventricle

Ant
Inf
Post

44

What comprises the diencephalon

Thalamus
Hypothalamus

45

Secretes CSF
(Color blue above thalamus)

Choroid plexus

46

3 neuro endocrine glands or organs

Hypothalamus
Pituitary gland
Pineal body

47

Give signals to pituitary gland to secrete either stimulatory or inhibitory hormones

Hypothalamus

48

Master gland

Pituitary gland

49

Other name for pituitary gland

Hypophysis

50

Function of thalamus

Relay station

51

Pathway of afferent

Sensory pathway

52

Pathway of efferent

Motor pathway

53

Anatomical significance of hypothalamus

Level where we locate optic chiasma and mamillary bodies

54

Point where optic nerve will cross

Optic chiasma

55

Hypothalamus is a landmark to locate presense of

Optic chiasma
Mamillary bodies

56

Connection bet forebrain and hindbrain

Midbrain

57

Substantia nigra is dark because of what neurotransmitter

Dopamine

58

Def in dopamine results to lightening of substantia nigra

Parkinsons dse

59

Pineal body secretes what

Melatonin

60

3 organs of hindbrain

Cerebellum
Pons
Medulla

61

Func of pons

Act as relay station

62

Pons highly projeted bec of

Presence of CN

63

Conical
Connects pons above to the spinal cord below

Medulla

64

Line separating the medulla in the middle
Present on the ant surface

Median fissure

65

Swelling Lateral to median fissure

Pyramid

66

Swelling posterior to the pyramids

Olive

67

2 major swellings of medulla

Olive
Pyramid

68

Medulla taper below, where majority of descending fibers CROSS OVER to opp side

Decussation of the pyramids

69

Behind olives, connects medulla to cerebellum

Inf cerebellar peduncles

70

Func of cerebellum

Body posture and coordinatio

71

Lies within the post cranial fossa beneath the tentorium cerebelli

Cerebellum

72

Post to pons and medulla

Cerebellum

73

Connects the 2 cerebellar hemispheres

Vermis

74

Cerebellum + midbrain

Sup cerebellar peduncle

75

Cerebellum + pons

Middle c. P.

76

Cerebellum + medulla

Inf c. P.

77

Surface layer of the hemispheres

Cortex

78

Foldings in cerebellum which increases surface area

Folia