LAB PRACTICAL 3 Flashcards

1
Q

How many Cranial Nerves are in the brain?

A

12

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2
Q

What is contained in the Neural tube

A

the neural canal, and anterior (rostral) or Posterior (caudal) sides

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3
Q

What are the secondary brain vesicles

A

Telencephalon
Diencephalon
Mesencephalon
Metencephalon
Myelencephalon

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4
Q

What are the adult brain structures of the telencephalon

A

Cerebrum : White matter, basal ganglia, and cerebral cortex

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5
Q

What are the primary brain vesicles

A

Prosencephalon
Mesencephalon
Rhombencephalon

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6
Q

What does the Prosencephalon turn into?

A

The telencephalon and the diencephalon

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7
Q

What is the mesencephalon

A

brain stem: midbrain

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8
Q

What does the Rhombencephalon turn into?

A

The metencephalon and the myelencephalon

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9
Q

Cerebral hemispheres (cortex, white matter, basal nuclei

A

Cerebrum

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10
Q

What is the diencephalon?

A

Thalamus, hypothalamus, epithalamus retina)

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11
Q

What are the adult neural canal regions

A

Lateral ventricles
Third ventricle
cerebral aquedcut
fourth ventricle
central canal

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12
Q

How many cranial nerve originate from the brain stem

A

10

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13
Q

What two nerves originate from the forebrain

A

The olfactory (I) and optic (II)

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14
Q

Cranial nerves serve the ____ and ____ (except for the _______ which extends into the abdomen

A

Head; Neck and vagus

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15
Q

what is the first cranial nerve (I)

A

Olfactory

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16
Q

What is the second cranial nerve (II)

A

Optic

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17
Q

What is the third cranial nerve (III)

A

Oculomotor

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18
Q

What is the fourth cranial nerve (IV)

A

Trochlear

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19
Q

What is the fifth cranial nerve (V)

A

Trigeminal

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20
Q

What is the sixth cranial nerve (VI)

A

Abducens

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21
Q

What is the seventh cranial nerve (VII)

A

Facial

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22
Q

What is the eighth cranial nerve (VIII)

A

Vestibulocohlear

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23
Q

what is the ninth cranial nerve (IX)

A

Glossopharyngeal

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24
Q

What is the tenth cranial nerve (X)

A

Vagus

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25
what is the eleventh cranial nerve (XI)
Accessory
26
What is the twelfth cranial nerve (XII)
Hypoglossal
27
Some cranial nerves are purely _______ or _______and some are both meaning they can carry both
sensory; motor
28
True or False: A single nerve can carry both afferent and efferent axons
True
29
Does the olfactory nerve have sensory or motor function?
Sensory (smell)
30
Does the optic nerve have sensory or motor function
Sensory (vision)
31
Does the oculomotor nerve have a sensory or motor function?
Motor
32
Does the trochlear nerve have sensory or motor function?
Motor
33
Does the trigeminal nerve have sensory or motor function
Both (general sensation)
34
Does the abducens nerve have motor or sensory function?
Motor
35
Does the facial nerve have sensory or motor function?
Both Sensory - taste
36
Does the vestibulocochlear have sensory or motor function?
both, some motor function and hearing/balance for sensory function
37
Does the glossopharyngeal nerve have sensory or motor function
Both (taste)
38
Does the vagus nerve have sensory or motor function
Both (taste)
39
Does the accessory nerve have sensory or motor function
motor function
40
does the Hypoglossal nerve have sensory or motor function
motor function
41
Reflexes are either...
Autonomic (visceral): mediated through the autonomic nervous system or Somatic: medicated through the somatic nervous system
42
What do autonomic reflexes ACTIVATE
Smooth muscle - cardiac muscle - glands
43
What do autonomic reflexes REGULATE
Digestion, elimination, blood pressure, salivation, sweating
44
What do somatic reflexes ACTIVATE
Skeletal muscles
45
T or F: Most reflexes are polysynaptic but some are monosynaptic ( have one sensory and on motor neuron)
True
46
What are the components of all human reflex arcs
1. receptor 2. Sensory neuron 3. integration center 4. motor neuron 5. Effector (muscle fiber or gland)
47
What reflex activates the agonist muscles and inhibits the antagonist muscles
A stretch reflex
48
What is an example of a stretch reflex?
Knee Jerk
49
This reflex occurs when a noxious stimulus activates the afferent sensory nerve fibers to the spinal cord 2. multiple interneurons receive the electrical current 3. on th eipsilateral side the internuerons casue an ESPS in the efferent motor neurons to the flexor muscles and an ISPS in the efferent motor neurons to the extensor muscles
Flexor Reflex
50
On the contralateral side the interneurons cause an: 1. ISPS in the efferent motor neurons to the flex or muscles 2. ESPS in the efferent motor nuerons to the extensor muscles
The crossed-extensor reflex
51
The pat of the PNS that regulates body activites under consious control
The voluntary Nervous system
52
Where is the cell body of the motor neuron located
In the brain or spinal cord
53
What does the voluntary nervous system serve?
Skeletal muscles
54
The part of the PNS that regulates body activities not under conscious control
Involuntary Nervous system
55
What does the involuntary nervous system serve
Cardiac Muscle Smooth Muscle Internal Glands
56
With the ANS it takes ____ neurons to get a nerve impulse from the CNS to the organ
2
57
What is the first and second neruon that help get a nerve impulse from the CNS to an organ
the first is a preganaglionic neuron ( located in the brain or spinal cord) and the seconds is a ganglionic neuron ( located in a ganglion outside of the CNS)
58
Parasypethetic division - Preganglionic neurons are located in the cranial area and form.....
nerves III, VII, XI, X
59
Syspathetic division - Preganglionic neurons are located in the thoracolumbar area
60
What organs are not innervated by the parasympathetic system?
Skin and adrenal Glands
61
What gland produces and secrets tears?
Lacrimal Gland
62
What muscles moves the eye laterally and controls the VI (6) cranial nerve
lateral Rectus
63
What is the VI (6) cranial nerve
Abducens
64
What Muscle moves the eye medially and controls the III cranial Nerve?
Medial rectus
65
What muscle elevates the eye and turns it medially and controls the III cranial Nerve?
Superior Recuts
66
What muscle depresses the eye and turns it medially and controls the III cranial Nerve
Inferior rectus
67
What muscle elevates the eye and turns it laterally and controls the III cranial Nerve
Inferior oblique
68
What muscle depresses the eye and turns it laterally and controls the IV cranial nerve
Superior oblique
69
What are the adult brain structures of the diencephalon
Thalamus, epithalamus, hypothalamus (retina)
70
What are the adult brain structures of the mesencephalon?
Brainstem: midbrain
71
What are the adult brain structures of the metencephalon
Brainstem: pons and cerebellum
72
What are the adult brain structures of the myelencephalon
Brain stem: medulla Oblongata