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
How do the lateral ventricles communicate with the 3rd ventricle?
Via the intraventricular foramina
25
How does the 3rd and 4th ventricles connect?
Cerebral aqueduct
26
What does the subarachnoid space contain?
Blood vessels and CSF
27
What is the function of the thalamus?
It receives almost all sensory info and directs it to the right place
28
What is the lambic system involved in?
``` Eating Fighting Sex drive Enjoyment Fear Memory formation and recall ```
29
What are the parts of the lambic system?
``` Cingulate gyrus Fornix Hippocampus Amygdala Mammillary body Olfactory bulb Parts of thalamus and hypothalamus ```