Lecture 7 Flashcards
1
Q
deuterostome ancestory:
A
likely a small, motile suspension feeder with a tubular gut.
2
Q
what is modified filter feeding?
A
cilia and mucus is trapping the food particles and then moving it into the pharynx.
3
Q
why were slits critical in vertebrate digestion system?
A
they got rid of unwanted material
4
Q
the structures of the buccal cavity:
A
- lips and oral opening
- palate-upper portion of buccal cavity
- teeth
- tongue
- oral glands- especially within the terrestrial vertebrates.
5
Q
why do you think mammals developed lip muscles?
A
so that they could moved their lips to get them out of danger
6
Q
what are lips derived from?
A
hyoid arch derivatives.
7
Q
what allowed for tongue evolution?
A
jaw articulation
8
Q
Vertebrate gut phylogeny is related to 2 things:
A
- diet
2. surface area thats needed to deal with whatever the animal is eating.
