Brain (Lec 19) Flashcards

1
Q

Regions of the brain

A
  • Cerebrum
  • Cerebellum
  • Diencephalon (hypothalamus/thalamus)
  • Brain stem
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2
Q

Blood brain barrier’s significance

A

Body guard for substances into brain

  • only allows certain substances to pass into brain tissue
  • wraps around vessels that carry blood to brain
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3
Q

Ventricles of the brain

A
4 Chambers within the brain
- lateral ventricles (2)
(Within Cerebral hemispheres)
- third ventricle
(Within Diencephalon)
- fourth ventricle
(Between Brain stem & Cerebellum)
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4
Q

Functions of Cerebrospinal fluid (CSF)

A
  • physically supports the brain (floats in this fluid)
  • cushion for nervous tissue
  • maintains ionic environment
  • transport/exchange of nutrients/wastes
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5
Q

Describe the Meninges of the brain (and spinal cord)

A

3 layers of connective tissue surrounding brain& spinal cord

  • Dura mater
  • Arachnoid mater
  • Apia mater
  • provide physical stability & shock absorption
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6
Q

What is A

A

Diencephalon (thalamus/hypothalamus)

Fluid filled sac

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7
Q

What is B

A

Brain stem

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8
Q

What is C

A

Cerebellum (looks like bell pepper)

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9
Q

What is D

A

Cerebrum

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10
Q

What is E

A

Midbrain

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11
Q

What is F

A

Pons

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12
Q

What is G

A

Medulla Oblongata

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13
Q

What is A

A

Longitudinal fissure

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14
Q

What is B

A

Corpus Callosum

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15
Q

What divides the cerebrum into left and right hemispheres

A

Longitudinal fissure

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16
Q

What does the corpus callosum do

A
  • largest of the commissural tracts

- axons transmits signals between the left and right hemispheres

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17
Q

What is the function of the association tract

A

Axons transmit signals between different regions of the same hemisphere

18
Q

What is the function of the Projection tracts

A

Transmit signals between the cerebrum and other regions of the brain & spinal cord

19
Q

What is A

A

Frontal lobe

20
Q

What is B

A

Temporal lobe

21
Q

What is C

A

Occipital lobe

22
Q

What is D

A

Parietal lobe

23
Q

What is E

A

Central sulcus

24
Q

What is F

A

Lateral sulcus

25
Q

What is G

A

Parieto-occipital sulcus

26
Q

Functions of the frontal lobe

A

Motor functions and higher functions

27
Q

Functions of the parietal, temporal and occipital lobe

A

Sensory functions

28
Q

Functional areas of the frontal lobe

A

Voluntary movements
- loc: primary motor area

Memory bank
- loc: premotor area

Higher functions -intellect/learning
- loc: prefrontal cortex

29
Q

Functional areas of parietal lobe

A

Somatic sensations
- loc: primary somatosensory area

Integration of information from variety of sensory inputs
- location: common integrative area

30
Q

Functional areas of the temporal lobe

A

Auditory sensations
- location: primary auditory area

Olfactory sensations
- location: primary olfactory area

31
Q

Functional areas of occipital lobe

A

Visual sensations

- loc: primary visual area

32
Q

Major functions of cerebellum

A
  • voluntary movement
  • complex movement
  • regulates muscle tone/posture/balance
33
Q

Functions of the Thalamus

A
  • relay sensory impulses to cerebral cortex

- helps maintain consciousness

34
Q

Functions of the Hypothalamus

A
  • regulate release of hormones from pituitary gland
  • regulate activity in the ANS
  • regulate emotions
35
Q

Functions of the Midbrain

A
  • motor reflex to visual/auditory stimuli

- voluntary movement

36
Q

Functions of the Pons

A
  • relay motor signals from cerebrum to cerebellum

- help control breathing

37
Q

Functions of the medulla oblongata

A
  • relay somatosensory signals from spinal cord to thalamus
  • helps control breathing, heart rate and blood vessel diameter
  • controls reflexes of swallowing, sneezing, coughing
38
Q

What is Dura Mater

A

Tough fibrous outer layer of Meninges

39
Q

What is arachnoid mater

A

Mesh like middle layer of Meninges

40
Q

What is Pia Mater

A

Thin inner layer of meninges firmly bound to underlying nervous tissue