How many proteins constitute the myofibril?

In the first step of the sliding filament model, the sarcoplasmic reticulum is stimulated to release…?

All of the below are myofibril proteins except…?

The length of the sarcomere during a myofibril contraction is…?

During the myofibril contraction, the H zone becomes smaller and smaller due to the increasing overlap of ——— filaments

The muscles of the body utilise ATP to power contractions through the molecule ———-

Phosphocreatine aids the formation of ————- during muscle contraction

Phosphocreatine is found predominantly in the skeletal muscles of ————–

Which of the following is the contractile protein of muscle?

Cross bridges are found in ————-

Sliding filament theory was proposed by…?

The muscle that is relaxing or lengthening is called ——–

What is an agonist?

Cross bridges that link between thick and thin filaments are formed by the ___________.

Sliding model states that…?

In the sliding filament theory of muscle contraction, all but which of the following are functions of ATP?

Troponin T ————

The myofilaments themselves do not contract or expand and so the ———- remains constant.

The duration of one muscle twitch is…?

At the level of the sliding filament model, expansion and contraction only occurs within the ————

The protein ———– is a rod-shaped molecule and about 40 nm long

How does excess ATP disconnect the myosin head from the actin filament?

Accumulation of __________ causes muscle fatigue.

What is a function of myofibril?

In the sliding filament model, the thick and thin filaments pass each other, shortening the ————