Contractile proteins is the term that identifies the proteins that allow muscles to shorten or lengthen.
yes. source: year 3 science class
lengthen
lengthen
disassemble
shorten or lengthen the note
Yes. The length of a shadow is determined by the altitude of the Sun. Therefore shadows shorten then lengthen as each day progresses and, between days, shorten and lengthen as summer comes and passes.
shorten
The two major proteins that make muscles move are actin and myosin. These proteins slide past one another during muscle contractions, generating the force that allows muscles to shorten and generate movement.
Muscles contract when sarcomeres shorten. The thin and thick filaments that compose sarcomeres do not shorten; instead, they slide past one another, causing the sarcomere to shorten while the filaments remain the same length.
Muscles can contract and shorten
An eccentric contraction is one that causes a muscle to lengthen.