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BIO 2300 Unit 2 > Atructure Of The Brain > Flashcards

Atructure Of The Brain Flashcards

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Biology 101 flashcards
1
Q

What are the 2 classifications of collections of cell bodies in CNS?

A

Nucleus/nuclei

Ganglion/ganglia

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2
Q

Ganglia is within …

A

PNS

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3
Q

Nuclei is within …

A

CNS

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4
Q

Nerve vs. tract

A

Nerve/nerve fiber: collection of axons

Tract: collection of nerve fibres sharing a common function

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5
Q

Gray matter

A

Location of (nuclei) the cell bodies inside CNS

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6
Q

White matter

A

Location of myelinated axons inside CNS

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7
Q

What are the 3 white matter tracts?

A

Association
Commissural
Projection

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8
Q

Name of very deep grooves

A

Fissures

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9
Q

Ridge closer to frontal lobe

A

Precentral gyrus

Primary motor cortex

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10
Q

Ridge closer to temporal lobe

A

Postcentral gyrus

Primary sensory cortex

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11
Q

What is the irregular paired masses of Gray matter located deep in white matter or cerebral hemisphere?

A

Basal nuclei

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12
Q

What is the function of basal nuclei?

A

Action selection.

Tells primary motor cortex what actions it is allowed to initiate

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13
Q

Thalamus function?

A

Receives , groups and relays info to cerebral cortex.

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14
Q

Hypothalamus function?

A 
Homeostasis
Commands endocrine system 
Controls food and water intake 
Sleep and circadian rhythms 
Emotional response 
Memory
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15
Q

Epithalamus function?

A

Houses pineal gland

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16
Q

Function of cerebellum?

A

Maintains movement.
Balance
Body posture
Fine coordination

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17
Q

What initiates movement?

A

The primary motor cortex within the precentral gyrus.

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18
Q

What allows the initiation of movement?

A

Basil nuclei

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19
Q

What coordinates movement?

A

Cerebellum

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20
Q

Midbrain function?

A

Relay station for visual and auditory information

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21
Q

How does the midbrain relay auditory and visual information?

A

Via superior and inferior colliculi

22
Q

Pons function?

A

Serves as communication and coordination center for spinal cord and various parts of brain.

23
Q

Medulla functions?

A 
Controls auditory (involuntary) functions 
(Heart rate etc.)
24
Q

What are the two different “collections” of cell bodies inside and outside the CNS called?

A

Nucleus (CNS) and ganglion (PNS)

25
Q

Definition of nucleus…

A

Collection of cell bodies inside CNS

26
Q

Definition of ganglion

A

Collection of cell bodies inside PNS

27
Q

Definition of nerve/nerve fiber?

A

Collection of axons

28
Q

Definition of tract

A

Collection of nerve fibers sharing a common function

29
Q

Define Gray matter

A

Location of cell bodies in side CNS (Nucleus)

30
Q

Define white matter

A

Location of myelinated axons inside CNS

31
Q

Which is superficial in the brain, white matter or gray matter?

A

Gray matter

32
Q

Which is superficial in the spinal cord, white matter or gray matter?

A

White matter

33
Q

Which white matter tracts connect same hemispheres?

A

Association tracts

34
Q

Which white matter tracts connect opposite hemispheres?

A

Commissural tracts

35
Q

Which white matter tracts project to lower regions of brain and spinal cord?

A

Projection tracts

36
Q

Subdivisions of brainstem from superior to inferior…

A

Midbrain
Pons
Medulla oblongata

37
Q

What connects the two hemispheres?

A

Corpus callosum

38
Q

Functions of frontal lobe are…

A

Personality, primary motor cortex

39
Q

Functions of parietal lobe are …

A

Primary sensory cortex

40
Q

Functions of temporal lobe…

A

Primary auditory cortex

41
Q

Function of occipital lobe is…

A

Primary visual cortex

42
Q

Which lobe is Wernicke’s area in?

A

Temporal lobe

43
Q

What is the function of Wernicke’s area?

A

Where spoken language is understood

44
Q

Name of deep groove that seperates left and right hemispheres

A

Longitudinal fissure

45
Q

Name of deep groove that seperates cerebellum from cerebrum

A

Transverse fissure

46
Q

Name of shallow grooves

A

Sulcus

Sulci

47
Q

Name of ridges.

A

Gyrus

Gyri

48
Q

_______ consists of thamalus, hypothalamus, and epithalamus.

A

Diencephalon

49
Q

Function of basal nuclei

A

Paired, irregular masses of gray matter buried deep within white matter of cerebral hemisphere

50
Q

Gray matter of cerebellum is

A

Superficial cortex gray matter

51
Q

White matter of cerebellum is

A

Arbor vitae

52
Q

Cerebellum has left and right wing. True or false?

A

True

BIO 2300 Unit 2 (9 decks)

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