Terms

Question 1

Homologous structure

Answer 1

Similar and structure was present in the last common ancestor. Ex - legs in cats and humans

Question 2

Analogous structure

Answer 2

Similar but derived independently since their last common ancestor did not possess that structure. Ex - wings on bats and insects

Question 3

Define white matter

Answer 3

collection of CNS axons

Question 4

Define nerve

Answer 4

Bundle of axons in PNS

Question 5

Define tract

Answer 5

Collection of CNS axons that have a common site of origin and destination

Question 6

Define bundle

Answer 6

collection of axons that run together but do not have a common site of origin and destination

Question 7

Define commissure

Answer 7

Any collection of axons that cross from one side to the other

Question 8

Lemniscus

Answer 8

A tract that meanders through the brain like a ribbon

Question 9

Orthologues

Answer 9

A species & the genotype with a duplicated gene

Question 10

Paralogues

Answer 10

Orthologues that have evolved a new function

Question 11

Term for large cells

Answer 11

Magnocellular

Question 12

Term for small cells

Answer 12

Parvocellular

Question 13

Term for tiny cells

Answer 13

Coneocellular

Question 14

Loss of coordination resulting in the inability to hit a target is called

Answer 14

Ataxia

Question 15

Le Gros Clark thought

Answer 15

you could use animals alive today to represent steps of evolution

Question 16

3 evolutionary principles

Answer 16

1. isn’t a branching tree
2. isn’t human directed
3. isn’t about progress, about diversification

Question 17

What does GABA stand for

Answer 17

Gamma-Aminobutyric acid