Brain Flashcards
1
Q
Gyri and Sulci
A
Acquired and lost multiple times in mammalian evolution.
Gyrencephelatic cortices correlate with brain size - folding to make it smaller
2
Q
Vertebrate neocortex
A
Mammalian neocortex expands.
Olfactory bulb visibility good for determining whether primate or not.
3
Q
brain size
A
correlates with animal size.
4
Q
Energy demands in brains
A
Brain is expensive - basal metabolic rate
Resting metabolic rate
20% of BMR is brain. 2% body mass is brain.
Blood flow redirected during exercises but not from brain
5
Q
Action potential spikes very expensive
A
Due to pumping of Na and K ions across membrane - so action potentials need to be used effectively.
6
Q
A
7
Q
A
