peptide hormones (pepËÂ·tÄ«d hÅrËÂ·mÅnz) , n.pl water-soluble hormones comprised of a few amino acids that introduce a series of chemical reactions to change the cell's metabolism.eptide hormones (pepËÂ·tÄ«d hÅrËÂ·mÅnz) , n.pl water-soluble hormones comprised of a few amino acids that introduce a series of chemical reactions to change the cell's metabolism.
There are several muscles working when pitching. Starts of with the abductor muscles when striding. leg muscles such as the calf, quads and hamstring work when push of happens â¦ . then shoulder girdle, lats and biceps work as arms rotate.Core muscles work for rotation.2 people found this useful.onfidence votes 716. There are no muscles that are not in use. In pitching a softball, the body moves as a coordinated unit, and virtually every muscle is in play for some reason.
ATEC Tuffy SFT Pitching Machine softballs are exclusive to ATEC and the only softball that can be used with the ATEC Power Streak pitching machine. ATEC Tuffy SFT Pitching Machine softballs are exclusive to ATEC and the only softball that can be used with the ATEC Power Streak pitching machine. When using a seamed ball, feed the ball into the machine with the seams in the same general position each time. 2  Wet or damp balls tend to slip on the throwing surfaces. 3  Towel dry any ball that has moisture on it before using in a pitching machine. 4  Extreme cold can cause balls to become harder than normal.