Bio-1

which of the following determine the density of the bone?

• Trabeculae

• Canaliculi

• Lacuna

• Osteocyte

Defect of menirlization of bone?

• Rickets and osteomalasia

• Osteoporosis

• Osteopetrosis

Increase bone turnover

• Rickets

• Pagets disease

• Osteopetrosis

All of the following are true about Osteopetrosis except:

• Can cause Pancytopenia ,Hepatosplenomegaly and whitening in x-ray

• Increase osteoclast activity and defect in osteoblast

• Increase density of bone and prone to fracture

• Treated by BM transplantation and diagnosed by x- ray

All of the following are true about Autosomal Ressesive Osteopetrosis except:

• Good prognosis

• Defect in carbonic anhydrase In infentile

• Complications are seizers, Renal acidosis and CNS manifestations

All of the following are true about Autosomal Dominant Osteopetrosis except:

• Milder than Ressesive

• Infant disease

• Is called Albers or Schomberg disease

All of the following are true about Rickets and osteomalasia except:

• Malabsorption of vitamin D

• Genu varum, Rachitic rosary and epiphysial widening

• Osteoblast expand and chondrocyte lay down

Pseudofracture is charestristic of

• Osteomalasia

• Rickets

• Osteopetrosis

Which increase in Osteomalasia

• Ca

• PTH

• Alkaline phosptase

• B and C

The active form of cholicalcetrol

• Calcidiol

• Calcitriol

• Alkaline phosptase

• B and C