Answer:
The main functions of the cell wall are to provide structure, support, and protection for the cell
The muscles of the ear, wisdom teeth, the appendix, the tail bone, body hair, and the semilunar fold in the corner of the eye.
Vertebrate striated muscle<span> contraction is controlled (regulated) by the action of the proteins troponin and tropomyosin on the actin filaments. Nervous </span>stimulation<span>causes a depolarisation of the </span>muscle<span> membrane (sarcolemma) which triggers the</span>release of calcium<span> ions from the </span>sarcoplasmic reticulum<span>.</span>