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Anatomy > L6 > Flashcards

L6 Flashcards

1
Q

external highly- convoluted.
gray matter of cerebral hemisphere

A

Cerebral cortex

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2
Q

extensive internal mass that partly encloses the basal ganglia.
of cerebral hemisphere

A

white matter

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3
Q

two hemispheres are linked by the
commissural fibers of ……

A

corpus
callosum.

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4
Q

two cerebral hemispheres are
separated by

A

a deep *median longitudinal fissure which contains a crescent-shaped fold of the dura mater
(the falx cerebri).

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5
Q

Su rfaces of cerebral hemisphere

A

superolateral surface

medial surface is flat

inferior surface is irregular

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6
Q

parts of inferior surface of cerebral hemisphere

A

a) The orbital part is above the orbital and nasal roof.

b) The tentorial part lies in the middle cranial fossa posteriorly it lies above the tentorium cerebelli which separates it from the superior surface of the cerebellum

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7
Q

Borders of the cerebral hemisphere

A

-Superomedial border is the longest
-frontal ————- occipital
-superior sagittal sinus.

-** Inferolateral** border
-pre-occipital notch

-Superciliary border at the level of the eye brows.

-Medial border يفصل السرفس المديال عن الانفيرور

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8
Q

part of Medial border:

A

A) Medial orbital border

B) Parahippocampal border

C) Medial occipital border
from the (corpus callosum) to the occipital pole.

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9
Q

Limbic lobe (functional lobe) on the
…….of the cerebral hemisphere.

A

medial surface

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10
Q

Sulci on the superolateral surface

A

central sulcus

lateral fissure (sulcus)

Parieto-occipital sulcus

Sulci of lateral surface of all lobes

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11
Q

The central sulcus start

A

superomedial border
But lies on Superiorlateral surface

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12
Q

Which Sulci contain middle cerebral vessels

A

Lateral sulcus

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13
Q

Sulci on Lateral Surface of frontal lobe:

A
  • Precentral sulcus
  • Superior Frontal sulcus.
  • Inferior Frontal sulcus.
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14
Q

Sulci on Lateral Surface of the parietal lobe:

A
  • Postcentral sulcus
  • Intraparietal sulcus
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15
Q

• Sulci on Lateral Surface of occipital lobe:

A

Lateral Occipital sulcus-
Lunate sulcus a short semilunar sulcus
Calcarine sulcus

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16
Q

• sulci on Lateral Surface of the temporal lobe:

A
  • Superior Temporal sulcus.
  • Inferior Temporal sulcus.
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17
Q

Gy ri on the superolateral surface

A
  • Precentral Gyrus
  • Superior, middle and inferior Frontal Gyri
  • Postcentral Gyrus
  • Superior Parietal Lobule
  • Inferior Parietal Lobule

-Lateral, superior and inferior occipital gyri
- Superior, middle and inferior temporal Gyri

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18
Q

Location of Insula

A

part of the cerebral cortex lies in the bottom of the lateral sulcus.

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19
Q

Insula It is outlined by ……

A

circular sulcus.

20
Q

close to the upper surface of
the corpus callosum separating it from the
cerebral cortex.

A

Callosal sulcus

21
Q

Su lci on the medial surface

A

Callosal sulcus

Cingulate sulcus

Central sulcus

Calcarine sulcus

Parieto-occipital sulcus

كلهم C

22
Q

Gy ri on the medial surface

A

Medial Surface of the frontal lobe:
- Medial Frontal Gyrus
- Paracentral Lobule

Medial Surface of parietal lobe:
- Paracentral Lobule
- Precuneus

Medial Surface of occipital lobe:
- Cuneus
- Lingual Gyrus

23
Q

Cuneus bounded by?

A

parieto- occipital

calcarine sulci.

24
Q

Lingual Gyrus bounded by

A

collateral sulcus and calcarine sulcus.

25
Q

Sulci on the inferior surface

A

Olfactory sulcus

Orbital sulcus

Rhinal sulcus

Collateral sulcus

Occipitotemporal sulcus

26
Q

Gyri on the inferior surface

A

Orbital surface :
-Gyrus Rectus
-Orbital gyri

Tentorial surface :
- Lingual Gyrus
- Medial and lateral Occipitotemporal Gyri
- Parahippocampal Gyrus
- Uncus

27
Q

Cortical Areas in Frontal Lobe

A
  1. The precentral area
  2. The supplementary motor area.
  3. The frontal eye field.
  4. The motor speech area of Broca.
  5. The prefrontal cortex.
28
Q

The precentral area is situated in

A

precentral gyrus

29
Q

precentral area may be divided into

A

• The posterior region which is referred to as the motor area, primary motor area,or Brodmann area 4

• The anterior region is known as the premotor area, secondary motor area or Brodmann area 6 and parts of areas 8

30
Q

Somatotopically organization of
the body in the motor areas

A

• The body hangs upside down with the larynx and tongue in the lowest part adjacent to the lateral
fissure, followed upward by the
head, upper limb, thorax,
abdomen, and lower extremity.

31
Q

Primary motor cortex (somatic motor area); area 4
• Site:

A

precentral gyrus
extending

over the
superiomedial border

into the
paracentral lobule

32
Q

Premotor area:
Site

A

premotor cortex, located anterior to area 4 consists of areas 6 and 8.

It occupies
anterior part of the precentral gyrus
and the posterior parts of the superior, middle, and
inferior frontal gyri.

33
Q

Area 8, known as

A

the frontal eye field

34
Q

The supplementary motor area:

A

medial frontal gyrus
on
the medial surface of the hemisphere
and anterior to the paracentral lobule.

35
Q

T he motor speech area of Broca (area 44 & 45) site

A

inferior frontal gyrus

36
Q

Th e sensory speech area of Wernicke
Site

A

superior temporal gyrus of the left dominant
hemisphere, with extensions into the parietal region.

37
Q

Wernicke area is connected to the Broca area by a bundle of nerve fibers called ……………

A

the arcuate fasciculus.

38
Q

Cortical areas of parietal lobe

A

•primary somesthetic area (p rimary somatic sensory cortex S1)

• secondary somesthetic area (secondary) somatic sensory cortex S2)

• The somesthetic association area

39
Q

primary somesthetic area:
• Site:

A

postcentral gyrus on
the lateral surface of the hemisphere
and
the posterior part of the paracentral lobulenon the medial surface (Brodmann areas 3, 1, and 2).

40
Q

The secondary somesthetic area is in………….

A

the superior lip of the posterior limb of the lateral fissure.

41
Q

somesthetic association area
Site

A

superior parietal
lobule extending onto the medial surface

42
Q

Cortical areas of Occipital Lobe

A

• The primary visual
area (Brodmann area 17).

• The secondary visual
area Brodmann areas 18 &19).

• The occipital eye field.

43
Q

primary visual area (Brodmann area 17)

A

walls of the posterior part
of the

calcarine sulcus.

44
Q

secondary visual area (Brodmann areas 18 and 19)

A

• It surrounds the primary visual area on the
medial and lateral surfaces of the hemisphere.

45
Q

Cortical areas of temporal Lobe

A

• The primary auditory area. 41,42
• The secondary auditory area.
• the sensory speech area of Wernicke 22

46
Q

T he primary auditory area (Brodmann areas 41 and 42)

A

inferior wall of the
lateral sulcus. + superior temporal gyrus

47
Q

secondary auditory area (auditory association cortex)

A

posterior to the primary
auditory area

in the lateral sulcus and in
the superior temporal gyrus

Anatomy (10 decks)

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