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MEDSCI 142 > Nervous System > Flashcards

Nervous System Flashcards

1
Q

Aspects of the Frontal Association Cortex

A 
Intelligence 
Personality
Behaviour 
Mood
Cognitive function
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2
Q

Aspects of the Parietal Association Cortex

A

Spatial skills

3D recognition- shapes, faces, concepts, abstract perception

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3
Q

Aspects of the Temporal Association Cortex

A

Memory
Mood
Aggression
Intelligence

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4
Q

Aspects of the Non-Dominant Hemisphere (right)

A 
Non-verbal language- Body language 
Emotional expression- Tone
Spatial skills- 3D
Conceptual understanding 
Artistic/Musical skills
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5
Q

Effects of injury to right hemisphere

A 
Loss of non-verbal language  
Speech lacks emotion 
Spatial disorientation 
Inability to recognise familiar objects
Loss of musical appreciation
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6
Q

What sensations are involved with discriminatory nerves

A

Touch and pressure

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7
Q

What sensations are involved with non-discriminatory nerves

A

Pain and temperature

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8
Q

What is the conduction speed of discriminatory nerves

A

50 m/s

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9
Q

What is the conduction speed from a non-discriminatory nerve

A

1 m/s

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10
Q

What’s the receptor class of a non-discriminatory nerve

A

Free nerve ending

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11
Q

What’s the receptor class of a discriminatory nerve

A

Myelinated/ encapsulated nerve

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12
Q

Where do discriminatory nerves enter the spinal cord through

A

Dorsal root

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13
Q

Where do non-discriminatory nerves enter the spinal cord through

A

Dorsal root

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14
Q

Where does the primary neuron synapse in from discriminatory nerves

A

Cuneate/gracile nucleus depending on where the impulse came from

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15
Q

Where does the primary nerve synapse in from non-discriminatory nerves

A

Dorsal grey horn

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16
Q

Where does the secondary neuron project through from discriminatory nerves

A

Medial Lemniscus

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17
Q

Where does the secondary neuron project through from the non-discriminatory nerves

A

Spinothalamic tract

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18
Q

Where does the secondary neuron synapse in from the discriminatory nerve

A

Vents posterior thalamus

19
Q

Where does the secondary neuron synapse in from the non-discriminatory nerve

A

Ventro posterior thalamus

20
Q

Where does the tertiary neuron from the discriminatory nerve project through

A

Internal capsule

21
Q

Where does the internal neuron from the non-discriminatory nerve project through

A

Internal capsule

22
Q

Where does the tertiary neuron synapse in from both discriminatory and non-discriminatory nerves

A

Primary samatosensory cortex

23
Q

What parts of the body are associated with gracile nucleus/ fasiculus

A

Lower limb information

24
Q

What parts of the body are associated with cuneate nucleus/ fasciculus

A

Upper limb information

25
Q

Are discriminatory nerves myelinated

A

Yes

26
Q

Are non-discriminatory nerves myelinated

A

No

27
Q

If there is a lesion on the right side on the brain/ brain stem, what type of sensory loss will this cause

A

Associative sensory loss

28
Q

If there in a lesion on the right side of the spinal cord, what type of sensory loss will this result in

A

Dissociative sensory loss

29
Q

With a lesion on the right side of the brain/ brain stem what side will you feel loss for touch & pressure and pain & temperature

A

Left for both

30
Q

With a lesion in the right side of the spinal cord, what side will sensory loss of touch & pressure and pain & temperature be felt on

A

Right for touch and pressure

Left for pain and temperature

31
Q

What pathway in the brain conveys discriminatory sensation ( touch & pressure)

A

Dorsal Column- Medial Lemniscal system/ pathway

32
Q

What pathway in the brain conveys non-discriminatory sensation (pain & temperature)

A

Spinothalamic tract

33
Q

What location do both pathways terminate

A

Ventral posterior nucleus in the thalamus

34
Q

Does the foot have a larger or smaller homoncular representation than the hand

A

Smaller

35
Q

What does a larger representation in the sensory homonculus represent

A

More sensitive areas of the body

36
Q

Why do some parts of the body have a larger representation in the primary motor cortex homonculus than others

A

Because they need finer control of the muscles innervated in that area

37
Q

What’s the function of the pyramidal tract

A

Initiating, controlling and stopping voluntary movement

38
Q

Symptoms of flaccid paralysis

A

No nervous control of muscle

Decreased muscle activation and decreased muscle tone

39
Q

Symptoms of spastic paralysis

A

Jerky movements

Increased muscle activation, increased muscle tone

40
Q

What is the basal ganglia associated with

A

Refined motor control

41
Q

What do diseases involving the cerebellum result in

A

Uncoordinated movements

42
Q

What do lesions in the basal ganglia result in

A

Unrefined movements

43
Q

What are the motor symptoms of Parkinson’s

A

Tremor at rest
Rigidity and stiffness
Difficulty initiating movement
Bradykinesia/hypokinesia

MEDSCI 142 (2 decks)

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