Skeleton Flashcards
What are the 3 main parts of the skeleton?
Skull, Vertebral Column, Thorax
What is the skeleton a main source of?
Bone marrow, Calcium
3 structures of skeleton are?
Axial, Appendicular, Visceral
What does tetrapod mean?
Has 4 limbs
What does bipedal mean?
Has 2 limbs
The word ossification?
Bone remodelling by osteoblasts
What are the characteristics of osteoblasts?
Bone building, regulates minerals
The two jaw bones are…..
Mandible, Mandibulla
The 4 main skull bones are…
Parietal, Occipital, Temporal, Frontal
The brain differences in Fish?
Large olfactory centres
The brain differences in Reptiles?
Large occipital & olfactory centres
The brain differences in Birds?
Large cerebral hemispheres
The brain differences in Mammals?
Large cerebellum & cerebral cortexes
What makes the brain special?
Not size but neurones
Definition of monodont?
One tooth
Definition of homodont?
Same teeth
Definition of heterodont?
Different teeth
Definition of diphodont?
Permanent teeth
Definition of polyphodont?
Replaced teeth
Definition of hypsodont?
High crowned
How many vertebrae does a fish have?
Well ossified, Notochord in each centrum,
How many vertebrae does a frog have?
1
How many vertebrae does a Reptile have?
7
How many vertebrae does a birds have?
Varies