organizarea structural a a citoplasmei celulei eucariote
TRANSCRIPT
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
1/29
ORGANIZAREA STRUCTURALA ACITOPLASMEI CELULEI
EUCARIOTE
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
2/29
Hialoplasma
Se mai numeste substanta fundamentala acitoplasmei, matrice citoplasmica,citosolIn microscopia optica clasica este o masaomogena optic, nestructurataMicroscopia electronica evidentiaza diferentieristructurale specifice,organitele si reteauatridimensionala a citoscheletuluiEste un biocoloid ce contine85%apa,macromolecule organice si ioniSe caracterizeaza prin tranzitia sol-gel si estesediul metabolismului celular
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
3/29
C itoscheletul este constituit din:Microfilamente de actinaMicrotubuli
Filamentele intermediareReteaua de microtrabecule-structuracontroversata
si proteinele asociate.
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
4/29
Tohelp protectyour privacy, PowerPointprevented thisexternalpicturefrom being automatically downloaded.To download and display thispicture,click Optionsin the MessageBar, and then click Enableexternalcontent.
Microtubulii
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
5/29
Caracteristicile microtubulilor
Uniformitatea constitutivaPolaritateaInstabilitatea dinamicaPrezenta de proteine asociate
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
6/29
P olimerizareatubulinelor
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
7/29
Microtubul citoplasmic
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
8/29
F unctiile microtubulilor
Miscarea organitelor sau curentiicitoplasmaticiTransportul axonalMiscarea cililor si flagelilor Fusul de diviziune
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
9/29
Interactiunea tubulina- kinesina
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
10/29
Transportul veziculelor (dineina si kinesina)
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
11/29
S ectiune prin flagel
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
12/29
APARATUL MI TOT IC ES T E C ON S T I TU I T DI N:
POLII FUSULUI DE DIVIZIUNEMICROTUBULII FUSULUI DE DIVIZIUNECINETOCORI
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
13/29
Centrosomul
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
14/29
C entriolul
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
15/29
Tohelp protectyour privacy, PowerPointprevented thisexternalpicturefrom being automatically downloaded.To download and display thispicture,click Optionsin the MessageBar, and then click Enableexternalcontent.
Celula in metafaza
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
16/29
C elula din epiteliu pulmonar in anafaza
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
17/29
Actina la microscop electronic
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
18/29
A ctina si miozina in muschiul striat
structura sarcomerului
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
19/29
Interactiunea miozinei cu filamentul de
actina in procesul contractiei musculare
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
20/29
Muschiul cardiac
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
21/29
Tohelp protectyour privacy, PowerPointprevented thisexternalpicturefrom being automatically downloaded.To download and display thispicture,click Optionsin the MessageBar, and then click Enableexternalcontent.
A ctina si miozina in celula endoteliala
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
22/29
S tructura microvililor
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
23/29
F ilamentele intermediare
Au 5 monomeri constitutivi:Vimentina
DesminaNeurofilamenteleProteina gliala fibrilara acida
CitocheratineleSunt formate din 8 protofilamente,cu caracter apolar
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
24/29
Monomerii filamentelor intermediare
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
25/29
Lamina nucleara formata dinlaminele A,B,C
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
26/29
V imentina-actina F
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
27/29
V imentina-tubuline
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
28/29
K eratina in celule epiteliale
-
8/2/2019 Organizarea Structural A a Citoplasmei Celulei Eucariote
29/29
K eratina