What is a Mammal? Flashcards
1
Q
Synapomorphies of chordate
A
vertebra and four limbs
2
Q
Subclasses of mammalia
A
Pototherians
Therians
3
Q
Infraclasses of therians
A
metatherians
eutherians
4
Q
Mammalian traits
A
Lactogenic
Viviparous
Hirsute
Endothermic homeothermy
5
Q
Lactogenic
A
milk producers
6
Q
Viviparous
A
give birth to live young
7
Q
Hirsute
A
possess hair
8
Q
Endothermic homeothermy
A
produces heat to maintain a stable core body temperature
9
Q
Single lower jaw bone advantages
A
stronger articulations
stronger bite
10
Q
Secondary hard palate
A
allows for breathing while eating
11
Q
Double occipital condyles and the atlas/axis complex
A
allows for greater agility and motion in head.
12
Q
Missing lumbar ribs advantages
A
lighter skeleton and more flexible
13
Q
zygopophyses on vertebrae advantages
A
more structural support
14
Q
Non-Skeletal Traits
A
4-chamber heart Enucleated red blood cell High concentration of mitochondria Large complex lungs Muscle diaphragm Masseter muscles Enlarged forebrain
