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A&P Chapter 1 Test Answer KeyA&P Chapter 1 Test Answer KeyA&P Chapter 1 Test Answer KeyA&P Chapter 1 Test Answer Key
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Which of the following best defines anatomy? It is the study of how the body parts work and carry out their life-sustaining activities. It is the study of all chemical reactions that occur within body cells. It is the study of the structure of body parts and their relationships with one another. It is the study of tissues. - AnswerIt is the study of the structure of body parts and their relationships with one another. Which subdivision of anatomy would include the study of individual cells? - Answermicroscopic anatomy The study of large body structures, visible to the naked eye, such as the heart is called ________ anatomy. - Answergross What level of structural organization is represented by the image numbered 5 in the figure? - Answertissue Which of the following is NOT an example of the same level of structural organization as that represented by image 6? smooth muscle blood vessel stomach skin - Answersmooth muscle Which level of structural organization is considered to be the highest (most complex) level? - Answerorganismal A structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ________. - Answerorgan A tissue consists of groups of similar cells that have a common function. - Answertrue In a homeostatic control mechanism, which component monitors the environment? - Answerreceptor Which of the following is an example of a positive feedback? withdrawing your hand from a painful stimulus, like a broken glass forming a platelet plug during blood clotting reducing of blood sugar by the hormone insulin shivering to warm your body up in cold weather - Answerforming a platelet plug during blood clotting
Which of the following represents the correct order in which the components interact in a homeostatic control system? the effector, the stimulus, and the receptor the variable, the receptor, and the set point the receptor, the stimulus, and the effector the receptor, the control center, and the effector - Answerthe receptor, the control center, and the effector Generally, what is the result of the negative feedback process? - Answerto maintain homeostasis Homeostasis is the condition in which the body maintains ________. - Answera relatively stable internal environment, within limits Positive feedback differs from negative feedback because ________. - Answerpositive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or "ideal" level Some of the nerve endings in the skin are sensitive to changes in temperature. They are part of a negative feedback mechanism regulating body temperature. These nerve endings represent a(n) ________ in the negative feedback mechanism. - Answerreceptor Positive feedback mechanisms tend to enhance the original stimulus so that the response is accelerated. - Answertrue Which directional term is used to describe the relationship of the skin to the skeletal muscles? - Answersuperficial The knee is proximal to the thigh. - Answerfalse Which of the following is the proper description of the human body in the anatomical position? The body is erect with feet together, palms facing the thighs, and thumbs pointing forward. The body is erect with feet slightly apart and arms extending perpendicular to the torso along a straight line with the clavicle. The body is erect with feet together, palms facing backward, and thumbs pointing toward the body. The body is erect with feet slightly apart, palms facing forward, and thumbs pointing away from the body. - AnswerThe body is erect with feet slightly apart, palms facing forward, and thumbs pointing away from the body. A coronal section divides an organ into superior and inferior portions. - Answerfalse The anatomical position is characterized by all of the following EXCEPT ________. arms at sides