W6 - Central Nervous System Flashcards
What is found on the postcentral gyrus?
Sensory homunculus
Glial cells don’t have APs or synapses, what are the 4 types in the CNS?
Ependymal, microglia, oligodendrocytes, astrocytes
Glial cells can hold neurons in place and supply nutrients and O2 but what 3 other functions do they do?
Insulate neurons, destroy pathogens and remove dead neurons
What is the role of oligodendrocytes?
Insulation of cells in the CNS (like Schwann cells in the PNS)
What is the role of astrocytes?
Transport nutrients
What is the role of microglia?
Remove debris and dead cells
Where are ependymal cells found?
Lining of fluid filled cavities of CNS
Medulla integrates lots of afferent signals but what does it also have centres in?
Regulation of breathing and heart rate
The frontal lobe has roles in higher mental functions and personality, what 3 things can this include?
Planning, suppressing unacceptable emotional responses and determining similarities (between things/memories)
Less spontaneous behaviour, emotional flatness, childlike behaviour and poor problem solving are side effects of…
Transorbital lobotomy
The parietal lobe is associated with interpreting sensations, what 3 types of agnosia can be caused by damage to this area?
Visual, auditory and tactile
What lobe contains the sensory homunculus?
Parietal
The occipital lobe is where sensations from the optic nerve goes, how does the mind fill in the blind spot?
Processing info in conjunction with other areas
The temporal lobe is involved in smell, sound and complex stimulation processing, it’s also largely known for memory, give an example of this?
Facial recognition
In terms of facial recognition, what can damage to the temporal lobe lead to?
Prosopagnosia, the inability to recognise faces (even your own)
