Development {Ans: Changes an organism goes through during its life}Thoracic Cavity {Ans: Division of the anterior (ventral) cavity that houses the heart, lungs, esophagus, and trachea}Ventral Body Cavity {Ans: Larger body cavity located anterior to the posterior (dorsal) body cavity; includes the serous membrane-lined pleural cavities of the lungs, pericardial cavity of the heart, and peritoneal cavity for the abdominal and pelvic organs; also referred to as anterior body cavity.}Responsiveness (Irritability) {Ans: Ability of an organisms or a system to adjust to changes in conditions}Cross Section {Ans: In anatomy, a transverse cut through a structure or tissue.}Differentiation {Ans: Process by which unspecialized cells become specialized in structure and function}Receptor (Sensor) {Ans: Also known as sensor, reports a monitored physiological value to the control center}Excretion {Ans: The process whereby the undigested residue of food and the waste products of metabolism are eliminated, material is removed to regulate the composition of body fluids and tissues, or substances are expelled to perform functions on an exterior surface.}Abdominopelvic Cavity {Ans: Division of the anterior (ventral) cavity that houses the abdominal and pelvic viscera.}Renewal {Ans: Process by which worn-out cells are replaced}Anterior Cavity {Ans: