Saliva is a watery substance formed in the mouths of animals, secreted by the salivary glands. Human saliva comprises 99.5% water, plus electrolytes, mucus, white blood cells, epithelial cells (which can be used to extract DNA), glycoproteins, enzymes (such as amylase and lipase), antimicrobial agents such as secretory IgA and lysozyme.
Take it on the arches does not mean simply Leave. It means Walk away. If Travis continues to break the chops of his dispatcher, he will not be driving a cab tonight. He will be walking home. I had no idea it was such an obscure term. It is dated, to be sure.
Flat feet. Introduction. Having flat feet, or 'fallen arches', means that your feet have low or no arches and press almost completely flat against the ground. The arch, or instep, is the middle part of the foot that's usually raised off the ground when you stand, while the rest of the foot remains flat on the ground. In young children, this arch isn't always visible because of the baby fat and soft tissue in their feet.