Studied by 20 people
Functions of the skeletal system
support; movement; protection; mineral storage; hematopoiesis
Where is hyaline cartilage found?
rib cage, voice box, nasal
Where is elastic cartilage found?
external ear, epiglottis
Where is fibrocartilage cartilage found?
knee, between vertebrae
Function of osteoblasts
forms bone matrix; appears in cartilage; secrete osteoid
Function of osteoclasts
resorbs bones; breakdown the bone to allow new cells to form
Function of osteocytes
maintains bone tissue
First step of ossification
osteoblasts appear in cartilage
Second step of ossification
osteoblasts secrete osteoid and osteocytes get trapped in bone
Third step of ossification
blood vessels weaving into the bone and the periosteum forms
Last step of ossification
lamellar bone is developed/formed and osteocytes, osteoblasts, and osteoclasts are all present; keeps happening until your bones are fully formed
Purposes of bone remodeling
repair skeleton damage; prevent accumulation of old bone; obtain/store calcium & other minerals
How many vertebrae in the cervical vertebrae?
7
How many vertebrae in the thoracic vertebrae?
12
How many vertebrae in the lumbar vertebrae?
5
How many vertebrae are in the sacrum?
5 fused
How many vertebrae are in the coccyx?
3 or 4 fused
What is ricketts
osteomalacia in kids; mostly in children; bowed legs and other bone deformities
What is ostealgia
bone pain; caused by arthritis or fracture
What is osteoporosis
bone resorption outpaces bone deposit; decreases bone mass; calcium deficiency
What is scoliosis
“Twisted” disease; abnormal lateral curvature of the thoracic vertebrae; idiopathic (without a known cause)
What is rheumatoid arthritis
immune system attacks own joints/body; come with other symptoms (fever, loss of appetite, weight loss); primary effect on smaller joints; limited movement
What is osteoarthritis
cartilage wears down with movement; primary effect on weight bearing joints (knees, hips, back, neck, shoulder); maintain movement
Note 
Flashcard (55)