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Exam 1: The Human Organism

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Question 21

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The regulation of room temperature by a thermostat is an example of a feedback loop. In this system, a sensor within the thermostat detects a change in temperature below a programmed set point. The thermostat then sends a signal, which turns on the furnace. The furnace heats the room bringing it back up to the programmed temperature. Once the room temperature reaches the programmed set point, the thermostat "turns off" the furnace. Which of the following statements is consistent with the above scenario?

A) This scenario is an example of a negative feedback mechanism.
B) The thermostat is the "control center" while the furnace is the "effector".
C) This scenario is different from how negative feedback works in the body because negative feedback in the body maintains a normal range of values instead of one specific set point.
D) The "receptor" in this scenario is the temperature sensor within the thermostat.
E) All of these are true.

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Question 22

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The region designated by the letter "H" is known as the _________________ region.

A) umbilical
B) hypogastric
C) lumbar
D) hypochondriac
E) iliac

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Question 23

Multiple Choice

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The fluid found between serous membrane layers

The basic structural and functional units of an organism, such as plant or animal, is the

"A group of cells with similar structure and function plus the extracellular substances located between them," describes

Which of the sections below separates the body into dorsal and ventral parts?

Growth refers to an increase in size of all or part of an organism. It can result from:

A cavity containing the lungs, but not the heart is the

Positive feedback mechanisms:

Anatomical position refers to individuals that are

A patient arrives at an emergency room with a traumatic pneumothorax after a car accident. In the course of the accident, the patient suffered a penetration wound, which allowed air to fill the space around one of her lungs causing it to collapse. Which serous membranes were likely damaged assuming that the lung itself was not punctured?

Which of the sections below separates the body into right and left parts?

The study of the body's organization that considers the heart, blood and all of the associated blood vessels as a unit is called

The kidneys, adrenal glands, pancreas, and urinary bladder are

In which quadrant of the abdomen is most of the liver usually located?

In which of these cavities would the urinary bladder and internal reproductive organs be found?

__________ refers the ability of an organism to sense changes in the environment and make the adjustments needed to help maintain its life.

A cut across the long axis of an organ at an angle other than a right angle is described as a(n)

Which of the sections below separates the body into superior and inferior parts?

The region designated by the letter "E" is known as the _________________ region.