BIOS-251: Exam 1 Review Questions with 100% Correct Answers

The study of human structure Correct Answer Anatomy The study of human function Correct Answer Physiology A tendency for organisms to maintain a balanced or constant internal state Correct Answer Homeostasis A state of balance Correct Answer Equilibrium Consequences of homeostatic imbalance Correct Answer Illness or death Thermoregulation Process Correct Answer A feedback loop in which a system responds to a change by reversing that change, or by decreasing the rate at which the change is occurring. (Ex. thermoregulation) Correct Answer Negative Feedback Loop A feedback loop in which a system responds to a change by amplifying that change. (Ex. childbirth) Correct Answer Positive Feedback Loop Changes, occurring within or outside the body, that affect homeostasis Correct Answer Stimuli Detects and sends messages to the control center Correct Answer Receptors Processes the signal, alerts the effector about the detected change, and gives instructions Correct Answer Control Center An organ or cell that acts in response to a stimulus; handles the issue Correct Answer Effector Divides a human body into anterior and posterior sections Correct Answer Frontal Plane or Coronal Plane Divides the human body into equal left and right sections Correct Answer Midsagittal Plane Divides the human body in half, creating two sections; top and bottom Correct Answer Transverse or Horizontal Plane Parallel plane next to the midsagittal plane Correct Answer Parasaggittal Plane