globular heads
blemishes and zits pimples black heads white heads
an anbassador
Another name for plateau is tableland.
It is an oesophagus
Another name for the sweetbriar is eglantine.
ATP is used to detach myosin heads and move them back to position for another "power stroke."
The release of ADP and P from the myosin heads causes the myosin heads to change shape.
myosin crossbridge binding
Cross-bridge
During contraction, there are always some myosin heads attached to the actin myofilament when other myosin heads are detaching.
Binding of the myosin heads sequentially prevents the actin-binding sites on the thin filaments from becoming continuously occupied by myosin heads, allowing for the muscle fiber to relax and the sarcomere to lengthen.
Myosin heads contain ATPase enzymes, which hydrolyze ATP to provide energy for muscle contraction. This energy is used to power the movement of myosin heads along actin filaments during the sliding filament theory of muscle contraction.
myosin
Actin is the molecule that has a binding site for myosin heads. This interaction is crucial for muscle contraction as myosin binds to actin and generates force to cause muscle movement.
ATP allows actin and myosin filaments to release from each other during muscle contraction by assisting in the detachment of the myosin heads from actin. It also helps in resetting the myosin heads for the next contraction cycle by providing energy for the process of cross-bridge formation.
Cross bridge
The two myofilaments that slide past one another to enable muscle contraction are actin and myosin. Actin makes up thin filaments while myosin forms thick filaments. During muscle contraction, myosin heads attach to actin filaments and pull them towards the center of the sarcomere, causing the muscle to shorten.