Marinades don't penetrate nor do acids tenderize,except for making the outer mushy. Papain, if not time controlled, will turn the meat to mush also. Sorry to be the bearer of bad news but at least you have something that will tenderize. Nothing is going to make tri tip melt literally like butter.
The diaphragm is the major muscle responsible for breathing. It is a thin, dome-shaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that it's centre moves caudally (downward) and its edges move rostrally (upward).
The right side of the picture shows the muscles involved in expiration (breathing out). As you can see, in quiet breathing, no muscles are activated on expiration. Expiration, the caption says, results from passive, elastic recoil of the lungs, rib cage and diaphragm..Note that in the Sounder Sleep System, all the breathing we do is quiet breathing only. In active breathing, certain muscles are activated on exhalation.he right side of the picture shows the muscles involved in expiration (breathing out). As you can see, in quiet breathing, no muscles are activated on expiration. Expiration, the caption says, results from passive, elastic recoil of the lungs, rib cage and diaphragm..