Lecture 21 Flashcards
What are the names of the sulci in the cerebral cortex?
- central sulcus
- parieto-occipital sulcus
- lateral sulcus
What are the names of the lines of the cerebral cortex?
Same as cranial bones
- frontal lobe (x2)
- parietal lobe
- occipital lobe (x2)
- temporal lobe
What is the name of the major fissure in the cerebral cortex?
The transverse fissure
What are the names of the major gyri in the cerebral cortex?
- post-central gyrus
- pre-central gyrus
What are the functions of lobes?
- conscious awareness
- association
What is the function of the frontal lobe? (Motor cortex)
Motor
Efferent signals
Voluntary movement
What is the function of the pre-frontal lobe?
Emotions/personality
- decision making
- anticipating consequences of our actions
What is the function of the parietal lobe?
Sensory
- somatosensory
- integration of multiple types of sensory information
- association
What is the function of the occipital lobe?
Vision
Information through our eyes
What is the function of the temporal lobe?
Memory/hearing
Learning
What is the primary motor cortex used for?
Execution of movement
What is the pre-motor cortex used for?
Planning of movement
What are the names of the major divisions of the cerebrum?
- cerebral cortex
- corpus callosum (white matter)
What are the names of the major divisions of the diencephalon?
- thalamus
- hypothalamus
What are the names of the parts of the brain stem?
- midbrain
- pons
- medulla oblongata
What are the two internal structures of the brain?
- white matter (x3 types)
- grey matter
What are the three types of white matter?
- commissural tracts
- projection tracts
- association tracts
Where in the brain are the commissural tracts?
Axons cross from side to side
Go both ways
What are the projection tracts?
Axons extended between cortex and other CNS area
What is the association tract?
Axons go on same side within cerebral cortex
Communication between brain areas
What is important about specific regions of the primary motor cortex?
It controls specific regions of the body
What happens is one section of the primary motor cortex is damaged?
One specific region of the body will not have movement
Are the cell bodies afferant or efferent in the primary motor cortex?
Efferent
What do the fibres do when going from brain to medulla?
Most cross to the opposite side of the medulla
