When all was said and done, Barack Obama and Mitt Romney, the two major party candidates for president in 2012, spent close to $1.12 billion -- not counting the millions more spent by the parties and outside groups. Overall, the presidential race cost more than $2.6 billion in that cycle. 2012 Presidential Race. When all was said and done, Barack Obama and Mitt Romney, the two major party candidates for president in 2012, spent close to $1.12 billion -- not counting the millions more spent by the parties and outside groups. Overall, the presidential race cost more than $2.6 billion in that cycle. Fundraising.
Best Answer: Epithelial tissue has 4 functions: protection, absorption, secretion, stimulation. Protection is reflected in the fact that epithelial cells are closely packed.
Body Tissues and Membranes. A tissue is composed of similarly specialized cells that perform a common function in the body. Epithelial Tissue. Epithelial tissues cover the body surface, line most cavities, and form glands. Functions include protection, absorption, secretion, and filtration. tissue is composed of similarly specialized cells that perform a common function in the body. Epithelial Tissue. Epithelial tissues cover the body surface, line most cavities, and form glands.