Roluri oase Flashcards

1
Q

Protectie org vitale

A

cutia craniana ➡️encefal

canal rahidian➡️md spn

cutia toracica➡️ inima&plamani

bazin osos➡️ org pelviene

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2
Q

Rol antitoxic

A

Oasele retin multe subst toxice ( Pb, Hg, F) patrunse accidental in organism si LE ELIBEREAZA TREPTAT fiind mai apoi eliminate renal

Astfel conc sangvina a toxicului nu creste prea mult si sunt prevenite efecte nocice

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3
Q

Rol sediu principal al org hematopoietice

A

COPII: toate oasele

ADULT: oase late contin maduva rosie hematogena.

obs: maduva galbena (tesut adipos de rezerva): maduva din canalul central al diafizei oaselor L

VARSTNICI: cenusie, nefunctionala

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4
Q

Rol metabolism Ca, Fosfor, electroliti

A

oasele sunt principalul rezervor de subst minerale ale organismului

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5
Q

Rol parghii aparat locomotor

A

ord 1: art capului cu coloana vert

ord2: art oaselor gambei cu picior
ord3: art oase brat si antebrat

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6
Q

Compozitia chimica oase

A

20% H20

80%reziduu uscat:
• m org (OSEINA) -> 90-95% COLAGEN
-> 5-10% subst fundam

•subst minerale: ft imp➡️HIDROXIAPATITA; fosfat Ca

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7
Q

Pt cn are mare afinitate substanta fundamentala

A

saruri minerale

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