Nervous System Flashcards
What are the characteristics of the Frontal association cortex?
- Intelligence
- Personality
- Behaviour
- Mood
- Cognitive Function
What are the characteristics of the Parietal association cortex?
- Spatial skills
- 3D recognition (shapes, faces, concepts, abstract perception)
What are the characteristics of the Temporal association cortex?
- Intelligence
- Memory
- Mood
- Agression
What does the non-dominant hemisphere (right) account for?
- Non-verbal language (e.g. body language)
- Emotional expression (tone of language)
- Spatial skills (3D)
- Conceptual understanding
- Artistic/ Musical skills
What are the effects of injury?
- Loss of non-verbal language
- Speech lacks emotion
- Spatial disorientation
- Inability to recognise familiar objects
- Loss of musical appreciation
Where is the primary motor cortex located?
Precentral gyrus
Where is the primary sensory cortex located?
Postcentral gyrus
Where is the primary auditory cortex located?
Temporal lobe, surrounded by Wernicke’s area
Where is the primary visual cortex located?
Occipital lobe
What lesion is caused by dysfunction in Broca’s area?
Non-fluent or Motor Aphasia = difficulty with language.
What lesion is caused by dysfunction in Wernicke’s area?
Fluent or Sensory Aphasia = can’t interpret spoken word.
What lesion is caused by dysfunction in the Arcuate Fasiculus?
Connectional Aphasia = can interpret correctly (good listening) & can speak (good vocalisation) but no connection between the two.
What is the dominant side of the brain and what areas are only present there?
- Left side
- Broca’s, Wernicke’s, Supramarginal & Angular Gyrus
What does the lateral fissure primarily separate?
The frontal lobe from the temporal lobe
What does the lateral fissure partially separate?
The parietal lobe from the temporal lobe
What is the function of the arcuate fasciculus?
To align speech recognition/comprehension with speech production (connects Broca’s and Wernicke’s areas).
What is the order of nerves from the skull downwards the spinal cord?
Cervical, Thoracic, Lumbar, Sacral, Coccygeal
How many Cervical Nerve levels are there?
8
How many Thoracic Nerve levels are there?
12
How many Lumbar Nerve levels are there?
5
How many Sacral Nerves are there?
5
Where does Cervical Enlargement occur?
Around cervical nerve six or seven
Where does Thoracolumbar Enlargement occur?
Around thoracic nerve 11/ 12 down to lumbar nerve 1
What are the string like individual neurons called?
Cauda Equima