A & P Mastering: CHAPTER 1 – Flashcards

Which of the following best defines anatomy? A) It is the study of how the body parts work and carry out their life-sustaining activities. B) It is the study of the structure of body parts and their relationships with one another. C) It is the study of all chemical reactions that occur within body cells. D) It is the study of tissues.

Which of the following statements most accurately describes the complementarity of anatomy and physiology? A) Physiology is more concrete than anatomy, because it describes structures that can be seen. B) Anatomy is form, which is more concrete than physiology because of the visible structures. C) Functions occur because of the anatomy that exists within the body. D) Anatomy can be described only by the underlying physiology.

Which life process, which relies heavily on nutrient inputs from the respiratory and digestive systems, sustains all other life processes? A)movement B)reproduction C)responsiveness D) metabolism

With regards to a variation of a physiological value from its set point or normal limit, negative feedback always __________ the value back to the set point or normal limit. A) returns B) decreases D) increases E) There is not enough information to answer this question.

In a homeostatic control mechanism, which component monitors the environment? A)receptor B) stimulus C) effector D) control center

Which of the following is an example of a positive feedback? A) when your body is cold and triggers shivering to warm your body up B) insulin's reducing blood sugar C) withdrawing your hand from a painful stimulus, like a broken glass D) the formation of a platelet plug during blood clotting

Which of the following is a good example of homeostasis? A) Your iron level is low so you are anemic. B) Your blood pressure has been around 115/75 mm Hg for many years. C) You have a temperature of 101°F. D) You are dehydrated because you have been sweating heavily while working outside.

If your body temperature is elevated, which of the following is least likely to re-establish temperature homeostasis? A) sweating B) shivering C) routing more blood to the skin so heat can radiate away D) moving to a cooler location

In the example provided about negative feedback and temperature regulation, which of the following acts as the control center? A) nerve endings B) skeletal muscles C) the hypothalamus D) the set point

Which of the following is not true about negative feedback? A) Once the set point is attained, the response stops. B) It tries to return the body to its set point. C) It changes the set point so the new conditions become the new normal. D) It helps maintain homeostasis.

Let's say a change occurs in the body that disrupts homeostasis. Which of the following best characterizes how positive feedback will affect the body's response? A) The response will stop once set point is reestablished. B) The response will continue to increase. C) The response will slow down once positive feedback begins. D) The rate of the response will become constant once positive feedback begins.

Let's say you are doing yard work on a hot, sunny day. You begin sweating to lose heat. But the sweat loss causes you to become dehydrated, and that causes your blood pressure to drop. In response, your body suspends sweating to prevent your blood pressure from dropping any more. Unfortunately, when you stop sweating you also stop losing heat. Now your temperature begins to rise, which increases your metabolic rate. That, in turn, causes you to generate even more heat, and your temperature rises still more. This is heat stroke. Which of the following best explains the feedback that occurs during heat stroke? A) It begins as positive feedback but changes to negative feedback. B) It is positive feedback. C) There is no feedback—that is why it gets out of control. D) It is all negative feedback.