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Nervous System Lecture Test Flashcards

1
Q

Embryonic brain development begins at—

A

3-4 weeks

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2
Q

Embryonic brain development looks like—

A

a neural tube that differentiates at the anterior end

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3
Q

Ventricles grow as—

A

expansions of the lumen of the neural tube

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4
Q

Ventricles are filled with –

A

cerebralspinal fluid

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5
Q

Ventricles are continuous with —

A

each other and the spinal cord canal

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6
Q

Apertures in the walls of the fourth ventricle communicate with —

A

subarachnoid space
surrounding the brain

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7
Q

Cerebrum is what percent of brain mass?

A

83%

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8
Q

What features exist on the cerebrum?

A

gyri, sulci, fissures

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9
Q

True or False? Fissures and larger sulci are similar in all people and are important anatomical
landmarks.

A

True

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10
Q

The lobes of the brain are —

A

Frontal
Parietal
Temporal
Occipital
Insula

(POTIF)

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11
Q

Cortex is —

A

gray matter

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12
Q

Basal nuclei is —

A

gray matter

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13
Q

Conscious behavior involves —

A

the entire cerebral cortex

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14
Q

The general functional areas of the cerebrum are —

A

– Motor areas
– Sensory areas
– Association areas

(MAS)

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15
Q

Left side of the brain is associated with:

A

Logos

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16
Q

Right side of the brain is associated with:

A

Pathos, creativity, and tetris skills

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17
Q

Contra-lateral means:

A

Controls opposite side of body

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18
Q

Cerebral white matter is composed of—

A

myelinated fibers (axons) bundled into large tracts

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19
Q

Cerebral white matter is responsible for—

A

Communication between cerebrum and other CNS centers

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20
Q

Commissural fibers–

A

connect corresponding gray areas of the two hemispheres

(COmmissural is COrresdponding)

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21
Q

Association fibers—

A

connect different parts of the same hemisphere

(Association is Acquaintance)

22
Q

Projection fibers—

A

connect the cerebral cortex with lower CNS centers

23
Q

The diencephalon—

A

is the gray matter that surrounds the third ventricle and is home to THE:
* Thalamus
* Hypothalamus
* Epithalamus

24
Q

The thalamus forms—

A

the lateral walls of the third ventricle

25
The hypothalamus forms---
the inferior walls of the third ventricle
26
Mammillary bodies are relay stations---
in the olfactory pathway
27
The epithalamus forms the---
roof of third ventricle
28
Epithalamus contains the ---
pineal body and choroid plexus
29
The brain stem is composed of--
white matter tracts surrounding deeper gray matter
30
Brain stem has three parts that are about 1 inch long
– Midbrain – Pons – Medulla oblongata (PMM)
31
Midbrain contains several---
tracts
32
Pons is composed of---
tracts between the higher brain centers and the spinal cord
33
The medulla oblongata is the ---- part of the brain.
most inferior
34
Cerebellum is what percent of brain mass?
11%
35
The cerebellum is composed of---
gray matter surrounding white matter
36
Functional brain systems are
networks of neurons that are not necessarily in the same area but work together
37
The functional brain systems are--
the limbic and reticular
38
The limbic system includes portions of the ---
cerebrum and diencephalon
39
The limbic system controls--
Memory, emotions, and visceral responses from emotions
40
The reticular formation is located in---
the brain stem
41
The reticular formation does what?
Responds via reflexes and weeds out weak signals
42
Meninges are:
Things that cover and protect the brains
43
Dura mater is---
double layer of connective tissue that forms the outside of the brain's protective meninges. (tough mother)
44
The arachnoid mater is --
the middle layer of loose tissue that absorbs fluid and is a protective meninges.
45
The pia mater is---
deepest layer that clings tight to the brain and forms the innermost of the protective meninges.
46
Cerebrospinal fluid forms--
a liquid cushion.
47
Cerebrospinal fluid reduces brain weight by---
97%
48
Functions of the cerebrospinal fluid include--
Deliver nutrients, remove waste, protect, transmit chemical signals
49
How many milliliters of cerebrospinal fluid is produced daily by the choroid plexuses?
500 mL
50
The blood-brain barrier is--
A selectively permeable membrane protecting neurons
51
The blood-brain barrier is composed of ---
capillary walls, basal lamina, and secured by astrocytes

Nervous System (7 decks)

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