Chap 3: Vertebrate Diversity Flashcards
1
Q
What are the synapomorphies of vertebrates?
A
- cranium
- tripartite brain with cranial nerves
- vertebrae
- endoskeleton of cartilage or bone
- paired appendages
- closed circulatory system with chambered heart
- ectodermal placode
- neural crest
2
Q
what does the cranium in vertebrates do?
A
supports and protects the brain and sensory organs of the head (cephalization)
3
Q
what is the ectodermal placode responsible for?
A
Thickening of the ectoderm that gives rise to sensory structures
4
Q
neural crest
A
embryonic ectodermal tissue that gives rise to dentin, splanchnocranium, pigment cells, and peripheral nerves
5
Q
A
