B io 205 - B one Questions and
answ er s w ith accur ate
r ationales(PASSED)
Bone - answer -adult human has 206 bones
-at birth there are approximately 270 bones
Functions of the skeletal system: - answer -support
-protection(e.g. skull, rib cage, vertebrae)
-movement-acts with muscle as a lever system
-mineral storage-calcium and phosphate
-blood cell formation-hemopoiesis(bone marrow)
Osteocytes - answer -mature cells that function in homeostasis
-in lacunae, between layers(lamellae) connected by canaliculi
-canaliculi are supplied by Haversian (central) canal
osteoblasts - answer -bone production
-found on the inner and outer surfaces of bone
osteoclasts - answer -bone breakdown
-giant cells with lysosomes that break down bone
answ er s w ith accur ate
r ationales(PASSED)
Bone - answer -adult human has 206 bones
-at birth there are approximately 270 bones
Functions of the skeletal system: - answer -support
-protection(e.g. skull, rib cage, vertebrae)
-movement-acts with muscle as a lever system
-mineral storage-calcium and phosphate
-blood cell formation-hemopoiesis(bone marrow)
Osteocytes - answer -mature cells that function in homeostasis
-in lacunae, between layers(lamellae) connected by canaliculi
-canaliculi are supplied by Haversian (central) canal
osteoblasts - answer -bone production
-found on the inner and outer surfaces of bone
osteoclasts - answer -bone breakdown
-giant cells with lysosomes that break down bone
