Ch 7 Flashcards
(21 cards)
Calcitonin
Encourages calcium deposition from blood into bone
Parathyroid hormone
Stimulates osteoclasts to resort bone and increase blood calcium
Thyroid hormone
Influences basal metabolic rate of bone cells
Intramembranous ossification
Parietal bones
Clavicle
Maxilla
Endochondral ossification
Formation of bone from cartilaginous model
Fibula
Phalanges
Femur
Ribs
Osteoprogenitor cells
Stem cells
Osteoblasts
Bone-building cells
Involved with bone deposition
Calcitonin causes cells to become more active
Increase activity when blood calcium levels are too high
Osteoclasts
Bone resorbing cells
Massive, multinucleate cells
Osteocytes
Bone cells encased in matrix
Diaphysis
Shaft of bone that contains medullary cavity (hollow space)
Epiphysis
Ends of bones
Rickets
Vitamin D deficiency
Green stick fracture
Only one side of bone is broken; other side is bent
Pathologic fracture
Occurs in bone that is already weakened from a disease
Osteoporosis
Reduction of bone mass
Typically in women
Osteomalacia/rickets
Softening of bones due to decrease in vitamin D
Rickets: children
Osteogenesis imperfecta
Hereditary
Brittle bones
Osteomyelitis
Infection in bone
Can travel through bloodstream or nearby tissue
Achondroplastic dwarfism
Due to abnormal conversion of hyaline cartilage to bone
Long bones and limbs stop growing, other bones grow normally
Kyphosis
Exaggerated thoracic curve
Hunchback
Lordosis
Exaggerated lumbar curvature
Swayback
Obesity or pregnant woman
