MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ________. A) complex tissue B) organ C) complex cell D) organ system 1) 2) The parietal pleura would represent a serous membrane ________. A) lining the abdominal cavity B) covering the heart C) covering individual lungs D) lining the thoracic cavity 2) 3) A good example of a positive feedback mechanism would be ________. A) regulating glucose levels in the blood B) body temperature regulation C) enhancement of labor contractions D) blood calcium level regulation 3) 4) The study of large body structures, visible to the naked eye, such as the heart is called ________ anatomy. A) gross B) microscopic C) developmental D) systemic 4) 5) One of the descriptions below is from the perspective of anatomical study, the rest are from a physiological perspective. Select the description below that comes from an anatomical perspective. A) The extremely thin tissue (simple squamous epithelium) of the lungs allows for the quick diffusion of respiratory gases into and out of the body. B) The innermost lining of the lungs is composed primarily of a thin tissue called simple squamous epithelium. C) The direction of blood flow through the heart is directed by one way valves. D) The cell-to-cell connections between heart (cardiac) muscle cells are strong. They hold the tissue together for a life time of forceful contractions. 5) 6) The body cavities that protect the nervous system are located in the ________ cavity. A) ventral B) cranial C) dorsal D) thoracic E) vertebral 6) 7) Positive feedback differs from negative feedback because ________. A) positive feedback is critical to health while negative feedback serves only to alert us to potential health threats B) positive feedback provides moment-to-moment wellbeing w