CSF and Functional Areas Flashcards
What are the 4 lobes of the brain?
- Frontal
- Temporal
- Parietal
- Occipital
What 2 functional areas are found on the frontal lobe?
- Primary motor cortex
2. Broca’s area
What functional area is found on the parietal lobe?
Primary sensory cortex
What functional area is found on the temporal lobe?
Auditory area
What functional area is found on the occipital lobe?
Visual area
Where on the frontal lobe is the primary motor cortex found?
Pre-central gyrus
What area number is the primary motor cortex?
Area 4
Where on the frontal lobe is Broca’s area found?
Inferior frontal gyrus
What is the function of Broca’s area?
Motor speech area
What area number is Broca’s area?
Area 44, 45
In a left handed person, where is Broca’s area found?
Right hemisphere of cerebrum
Where on the parietal lobe is the primary sensory cortex located?
Post-central gyrus
What area number is the primary sensory cortex?
Area 3, 1, 2
Where on the temporal lobe is the auditory area found?
Below the lateral sulcus
What area number is the auditory area?
Area 41, 42
Where on the occipital lobe is the visual area found?
Occipital pole
What area number is the visual area?
Area 17, 18, 19
What is area number 6?
Premotor area
What is the function of the premotor area?
Co-ordination of movement
What is the function of the cingulate lobe found on the medial aspect of the brain?
Emotion
What are ventricles found in the brain?
Spaces in the brain filled with CSF
Where is the majority of CSF produced?
Lateral ventricles
Describe the flow of CSF from the two lateral ventricles to the fourth ventricle
- Passed through interventricular foramina of Monro
- Into third ventricle
- Through cerebral aqueduct of Sylvius to fourth ventricle
- Into fourth ventricle
How many foramina allow CSF to pass from fourth ventricle to subarachnoid space?
3
What are the names of the foramina which allow CSF to pass from fourth ventricle to subarachnoid space?
- Foramen of Magendie
2. Two foramen of Lushcka
How is CSF reabsorbed?
Arachnoid granulations
Where is the CSF reabsorbed to?
Venous sinuses
Where is the third ventricle found?
Cavity of diencephalon
Where is the fourth ventricle found?
Cavity of the hindbrain
What are 4 functions of CSF?
- Protection from trauma
- Supply nutrients
- Remove waste products
- Suspend brain for lighter weight
What produces CSF?
Ependymal cells of the choroid plexus
Define hydrocephalus
An abnormal increase in the volume of CSF within the skull
What are 3 things that can cause hydrocephalus?
- Abnormal increase in the formation of CSF
- Blockage of circulation of CSF
- Diminished absorption of CSF
What are 2 types of hydrocephalus?
- Internal hydrocephalus
2. External hydrocephalus
What causes internal hydrocephalus?
Excessive CSF in the ventricles
What causes external hydrocephalus?
Accumulation of CSF in subarachnoid space
How can hydrocephalus be treated?
Ventriculoatrial shunt to allow CSF to escape into right atrium of heart
What are 3 basal ganglia?
- Corpus striatum
- Amygdaloid nucleus
- Claustrum
What are the 2 areas of the corpus striatum?
- Caudate nucleus
2. Lentiform nucleus
