Other Flashcards

0
Q

What is volume (amplitude) measure in?

A

Decibel

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1
Q

What is pitch (frequency) measure in?

A

Hertz

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2
Q

What is neurotransmission dependant on?

A

Transmitter synthesis
Vesicle fusion
Occupation of post synaptic receptors

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3
Q

What is neurotransmission modulated by?

A

Transmitter re-uptake

Occupation of presynaptic receptors

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4
Q

What are the two main peripheral neurotransmitters?

A

Acetylcholine (somatic and parasympathetic)

Noradrenaline (sympathetic)

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5
Q

What are the two MAJOR neurotransmitters in the CNS and ar they inhibitory or excitatory?

A

Excitatory- glutamate

Inhibitory- GABA and glycine

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6
Q

What are the four main modulatory neurotransmitters in the CNS.

A

Dopamine
Serotonin
Noradrenaline
Acetylcholine

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7
Q

What is dopamine important in?

A

Cognition

Excess leads to schizophrenia

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8
Q

What is acetylcholine important in?

A

Cognition and memory

Deficiency may lead to Alzheimer’s

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9
Q

Serotonin and noradrenaline are important in……

A

Mood

Deficiency leads to depression

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10
Q

Where are pyramidal cells found?

A

Cerebrum

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11
Q

Where are purkinje cells found?

A

Cerebellum

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12
Q

What are the three main spinal tracts?

A

Dorsal column
Spinothalamic
Coticospinal (motor)

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13
Q

Describe the dorsal column tract?

What’s it for and what is it split into?

A
For proprioception
Gracile (medial-lower body)
Cunate (lateral-upper body)
First neurone enters dorsally
Synapse at medulla then deccusates
Synapse at hypothalamus
3rd neurone travels to sensory cortex
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14
Q

Describe the spinothalamic tract

What is it for?

A
Pain and temp
Neurone enters dorsally 
Synapse in spinal cord then decussates
2nd synapse at thalamus
Third neurone goes to sensory cortex
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15
Q

Describe the corticospinal tract

A

1st motor neurone from motor cortex
Decussates at lower medulla
Synapses at anterior horn
Exits spinal cord travels to target muscle

16
Q

What is the function of the occulomotor cranial nerve?

A

Eye movement

Iris and lense

17
Q

What is the function of the trochlear cranial nerve?

A

Eye movement upwards

18
Q

What is the function of the abducens nerve?

A

Abductors of eye

Lateral movement

19
Q

What is the function of the vestibulocochlear nerve?

A

Hearing and balance

20
Q

What is the function of the glossopharyngeal nerve?

A

Swallowing
Glands
Taste
Cardiovascular

21
Q

What are commissar all fibres?

A

They join the two hemispheres

Most are gathered in the corpus callosum

22
Q

What are association fibres?

A

They are confined to their own hemispheres

They connect diff parts of the cortex

23
Q

What are projection fibres?

A

They connect the brain stem with the spinal cord

24
Q

How do the lateral ventricles communicate with the 3rd ventricle?

A

Via the intraventricular foramina

25
Q

How does the 3rd and 4th ventricles connect?

A

Cerebral aqueduct

26
Q

What does the subarachnoid space contain?

A

Blood vessels and CSF

27
Q

What is the function of the thalamus?

A

It receives almost all sensory info and directs it to the right place

28
Q

What is the lambic system involved in?

A
Eating
Fighting
Sex drive
Enjoyment
Fear
Memory formation and recall
29
Q

What are the parts of the lambic system?

A
Cingulate gyrus
Fornix
Hippocampus 
Amygdala
Mammillary body
Olfactory bulb
Parts of thalamus and hypothalamus