Lesson 2 Flashcards
1
Q
evolution of neurones and muscles.
A
brain cells and muscles evolved together, enabling animals to move. Likley started in single celled organisms.
2
Q
what is the nerve net?
A
‘nervous system’ of older structures (e.g. jellyfish). consists entirely of neurons that receive sensory information and connect directly to other neurons that move muscles.
3
Q
What is ganglia?
A
most recently evolved in invertebrates, they are clusters of neurons that resemble primitive brains.
4
Q
what is Australopithecus?
A
-first primates to show distinct human characteristics
-evidence suggest they are our common ancestor,
5
Q
Encephalization quotient (EQ)
A
measure of brain size to allow comparison between different species
