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Phase 1 Med Neuro > Systems Level Neural Architechture > Flashcards

Systems Level Neural Architechture Flashcards

1
Q

Where is learn three at processes

A

Cortex and limbic system

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2
Q

Where is look processed

A

Sensorimotor midbrain

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3
Q

Where is pain processed

A

Spinal cord eg withdrawal reflex

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4
Q

What is the peripheral nervous system

A

Everything outside skull and spine

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5
Q

Peripheral nervous system

A

Interacts with external environment:

Skin, muscles, joints, eyes, ears

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6
Q

Autonomic nervous system

A

Unconscious, regulates bogus internal environment

Eg internal organs

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7
Q

Dorsal root

A

Afferent
Affected by the world
Sensory

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8
Q

Central root

A

Efferent
Having effect on world
Motor

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9
Q

First 3 subdivisions of brain

A

Forebrain
Midbrain
Hindbrain

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10
Q

Divisions of forebrain and parts they include

A

Telencephalon- cerebral cortex, Basal ganglia and limbic system

Diencephalon- thalamus, hypothalamus

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11
Q

Divisions of midbrain

A

Mesencephalon- tegmentum and tectum

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12
Q

Divisions of hindbrain

A

Metencephalon- pons, cerebellum

Myelencephalon- medulla

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13
Q

Medulla

A

Myelencephalon
Contains tracts carrying signals between rest of the brain and the body
Caudal part of reticular formation- balance
Functions- sleep/ wake, movement, muscle tone, cardiac/ respiratory, circulatory, excretory reflex

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14
Q

Pons

A

Means bridge
Relay from cortex and midbrain to cerebellum
Pontine reticular formation- pattern generators such as walking

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15
Q

Cerebellum

A

As many neutrons as CNS
Corrects synaptic weights to stop motor errors
Thought exclusive for motor coordination

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16
Q

Midbrain- Tectum- function and what it contains

A

Visual/ spatial and auditory frequency map

Superior colliculus- sensory change, orientation/ defensive movements

Inferior colliculus- auditory

17
Q

Modbrain- tegmentum- 3 structures it contains

A

Periaquaductal gray
Red nucleus
Substantia nigra

18
Q

Function of periaquaductal gray

A

Defence
Pain
Reproduction

19
Q

Function of red nucleus

A

Target of cortex, cerebellum projects to spinal cord

Pre cortical motor control- in arms and legs

20
Q

Function of substantia nigra

A

Pars compacta- dopamine cells- basal ganglia- PARKINSONS HAVE LESS OF THIS

Pars reticulata- basal ganglia output

21
Q

Hypothalamus function- diencephalon

A

Regulates pituitary gland
Hormonal control
Homeostasis

22
Q

Thalamus function- diencephalon

A

Specific nuceli- replan signals to cortical limbic system for all sensations but smell

Non specific nuclei- regulate sleep

Important relays from basal ganglia and cerebellum to cortex

23
Q

Forebrain cerebral cortex subcortical portions

A

Basal ganglia

Limbic system

24
Q

Subcortical structure- basal ganglia

A

Motor function

25
Q

Subcortical structure- limbic system

A 
Emotion, memory
Amygdala
Hippocampus
Forbid
Consulate gyrus
Septum
Mammillary body
26
Q

Amygdala

A

Almond

Associate sensory stimuli with emotional impact

27
Q

Mammillary body

A

Breast shaped

Formation of recollective memory- amnesia

28
Q

Hippocampus

A

Sea horse

Long term and spatial memory

29
Q

Septum

A

Something that encloses

Defence and aggression

30
Q

Cingulate gyrus

A

Limbic cortex
Behaviour outcome link to motivation and autonomic control
Atrophied in schizophrenia

31
Q

Fornix

A

C shaped bundle of fibres

Signal from hippocampus to mammillary bodies

32
Q

Frontal lobe

A

Precentral gyrus- fine motor control instructions
Primary motor cortex- initiation of voluntary movements, descending pathways
Pre-motor and supplementary motor areas- higher level motor plans and initiation of voluntary movements
Prefrontal cortex- mindful behavioural actions, aware of consequences
Working memory- short term

Involved in executive planning- judge and take emotion into account

33
Q

Parietal lobe

A

Post central gyrus- receives sense

Primary somatosensory cortex

34
Q

Temporal lobe

A

Primary auditory cortex

35
Q

Occipital lobe

A

Dorsal stream- vision for movement

Ventral stream- vision for identification

Phase 1 Med Neuro (6 decks)

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