「Muscle/StructureofMuscle/MyofibrilStructure」の版間の差分

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//RAND  
Which one of the following is not part of the structure of the thin filament {~=actin~=myosin~troponin~tropomyosin}
Which one of the following is not part of the structure of the thin filament {~actin~=myosin~troponin~tropomyosin}

2020年6月30日 (火) 22:44時点における最新版

The structure of the myofibril

Link to Video explanation

The myofibrils contain the contractile apparatus of the muscle. These are called myofilaments and are divided into thick and thin filaments.

Musclemyofibrilstructure.jpg

The thick filament is mainly composed of hundreds of myosin molecules. The thin filament consists of two chains of actin molecules helically intertwined. Also present on the thin filament are the regulatory proteins troponin and tropomyosin.

The myofibril has a very regulated structure with alternating light and dark bands. The repeating unit of the myofibril is known as the sarcomere.


Challenge Quiz

You must wait for the CORRECT! 正確!

<GIFT> //LEVEL:2 //RAND The contractile apparatus of the muscle are {~=Myofilaments~myofibrils}.

//LEVEL:2 //RAND The thick filament consists mainly of {~actin~=myosin}.

//LEVEL:2 //RAND The thin filament consists mainly of {~=actin~myosin}.


//LEVEL:2 //RAND The repeating unit of the myofibril is the {~=sarcomere~tropomyosin~actin}.

//LEVEL:2 //RAND Which one of the following is not part of the structure of the thin filament {~actin~=myosin~troponin~tropomyosin}