Spiervezels - Moleculen, cellen en weefsels - JufDanielle Academie

Moleculen, cellen en weefsels

Spiervezels

Posted by rosax3 on 2022-02-18 at 14:26:24

Hoi!

Wat ik uit de lesstoffen heb vernomen is dat spiervezels alleen in dwarsgestreepte spierweefsel voorkomt. Maar alle spieren hebben toch spiervezels nodig omdat deze uit myofibrillen bestaan en daardoor kunnen bewegen?

Groetjes, Rosa

Danielle replied 2 years, 6 months ago 2 Members · 1 Reply
1 Reply

Danielle

Administrator
2022-02-19 at 15:16:10

Hoi @rosax3 ! Inderdaad: Alleen dwarsgestreept spierweefsel heeft spiervezels. Spiervezels zijn namelijk cellen die met elkaar gefuseerd zijn (dus 1 spiervezel heeft meerdere celkernen). In glad spierweefsel en hartspierweefsel zijn alle spiercellen nog gewoon los van elkaar en heten daarom geen spiervezels maar gewoon spiercellen 🙂

Maar inderdaad: Alle soorten spiercellen en spiervezels bevatten myofibrillen. Die zorgen ervoor dat de spier kan samentrekken!

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