Salts are lost from the body in perspiration, and urine only
Indicate whether the statement is true or false
FALSE
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The inside free surface of the digestive tract is lined by kinds of ____________________ tissue
Fill in the blank(s) with correct word
The major source of hydrogen ions in the body is
a. dietary intake of acids such citric acid and acetic acids. b. phosphoric acids and sulfuric acids formed by protein metabolism. c. fatty acid metabolites such as keto acids. d. carbon dioxide produced by cellular respiration. e. hydrochloric acid produced by gastric glands.
At peak levels of muscle exertion, the mitochondria can supply ________ of the energy required by the muscle
A) all B) 80 percent C) more than half D) only about one-third E) only about 10 percent
Desmosomes are structures that permit direct communication between cells by allowing the cells to exchange small molecules in their cytoplasms
Indicate whether the statement is true or false.