OSSIFICATION RORS Flashcards

1
Q

FACTORS THAT AFFECT OSSIFICATION

A

GENES
VITAMINS
HORMONES
NUTRITION

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2
Q

THE BASIC FACTOR IN OSTEOGENESIS AND MORPHOGENESIS

A

GENES

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3
Q

WHAT DOES GENE DETERMINES?

A
  1. site of osteogenesis and presence and absence of cartilage model
  2. normal timing and order in which ossification happen
  3. time of cessation of growth
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4
Q

DEFECTIVE CALCIFICATION OF CARTILAGE AND OSTEOID TISSUE

A

VITAMIN D

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5
Q

CARTILAGE CELLS HYPERTROPHY AND PERSIST

A

EPIPHYSIAL DISK BECOME THICK AND IRREGULAR

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6
Q

IF THERES MORE OSTEOID TISSUE

A

APPEAR KNOBBY “RACHITIC ROSARY”

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7
Q

RATE OF OSSIFICATION IS REDUCED

A

VITAMIN A

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8
Q

DEFECTIVE PRODUCTION OF FIBERS AND GROUND SUBSTANCE AND OF PHOSPHTAE IN BONE

A

VITAMIN C

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9
Q

OSTEOBLASTIC INTERFERENCE

A

VIT C

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10
Q

SOMATOTROPHIC

A

GROWTH HORMONE

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11
Q

DELAYS THE CLOSUR OF THE EPIPHYSIS BY PROLIFERATION OF CARTILAGE CELLS AT THE EPIPHYSEAL DISK

A

SOMATOTROPHIC

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12
Q

GIGANTISM

A

HYPERSECRETION OF STH

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13
Q

DWARFISM

A

HYPOSECRETION OF STH

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14
Q

HYPERSECRETION AFTER CLOSURE OF THE EPIPYSEAL PLATE

A

ACROMEGALY

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15
Q

MATURATION OF BONE

A

THYROID HORMONE

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16
Q

DECREASE THE RATE OF OSSIFICATION

A

HYPOSECRETION OF TH

17
Q

ALTER NORMAL TURN OVER OF BONE

A

HYPERSECRETION OF TH

18
Q

OSTEITIS FIBROSA

A

PTH

19
Q

DECREASED BREAKDOWN OF BONE

A

TETANY

20
Q

ADVANCE APPEARANCE OF OSSIFICATION CENTERS AND INCREASE THE RATE OF MATURATION OF BONES

A

SEX HORMONES