Which of the following describes the proper order of structures that a carbon dioxide molecule diffuses through after leaving the blood?
a. alveolar space; surfactant layer; capillary wall
b. capillary wall; alveolar space; surfactant layer
c. alveolar space; capillary wall; surfactant layer
d. capillary wall; surfactant layer; alveolar space

Part a - prefixes, roots, and suffixes match these prefixes, suffixes and roots to their meanings. phospho- angio- -uria -tropic -phag- a. the word root means blood or lymph vessels. b. the word root means urine. c. the word root means feeding or eating. d. the word root means phosphate or phosphorus. e. the word root means attracted specifically to the specified organ or tissue. part b – match these vocabulary terms to their meanings. gonadotropic polyuria angiotensin ii polyphagia phosphodiesterase upon the release of renin, is produced and stimulates vasoconstriction and the release of aldosterone. fsh and lh are examples of hormones, which target the ovaries or testes. an enzyme that degrades second messengers like camp or cgmp is . overproduction of urine, or , is a sign of diabetes mellitus. overeating, or , is a sign associated with diabetes mellitus.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

What causes darkening of the skin as melanin production increases