skeletal systemäň

Question 1

functions

Answer 1

-movement,stability of the body
-maintains a specific shape of an organism
-protection of internal organs
-supportive framework of th body

Question 2

hydroskeleton

Answer 2

flexible skelton supported by fluid pressure
-earthworm,jellyfishstarfish

Question 3

exoskeleton

Answer 3

-the stable outer shell of an organism
-invertebrates
-arthropods-chitin
-molluscs-calcium carbonate
-Arthropods must periodically shred the exoskeleton (their organism doesn’t grow w them )

Question 4

endoskeleton

Answer 4

-forms the support structure inside the body
-vertebrates
-consists of hard, mineralized structures

Question 5

cytoskeleton

Answer 5

skeleton of a cell
main purpose-maintain shape,protection

Question 6

skeleton consists of:

Answer 6

skull
chest = thorax
vertebral column = spine
extremities

Question 7

phylogenesis invertbrates

Answer 7

a body cavity- the coelom filled with -coelomic fluid

Question 8

phylogenesis vertebrates

Answer 8

the main skeletal component -bone
another important component is -cartilage

mammals – mainly in the joint areas
the sharks – the skeleton is composed entirely of cartilage