Question 1

Which of the following best describes the role of negative feedback in maintaining homeostasis?

Accepted Answer

It maintains conditions in the body at particular set points by reversing deviations.

Question 2

A patient is exposed to a hot environment. Which sequence correctly describes the negative feedback response to prevent overheating?

Accepted Answer

Receptor senses heat, control center processes information, effector (sweat glands) cools body.

Question 3

Which of the following is NOT a component of a negative feedback system?

Accepted Answer

Amplifier

Question 4

If the homeostatic set point for blood sodium is $$140\,mmol/L$$, what would happen if sodium levels rise to $$150\,mmol/L$$?

Accepted Answer

Negative feedback would decrease sodium levels toward $$140\,mmol/L.$$

Question 5

Which subdivision of anatomy focuses on the study of structures visible to the naked eye?

Accepted Answer

Gross Anatomy

Question 6

A researcher is studying the development of the heart during gestation. Which anatomical subdivision is most relevant?

Accepted Answer

Embryology

Question 7

Which imaging technique uses magnetic fields to produce detailed images of soft tissues?

Accepted Answer

MRI

Question 8

A person has a reference body weight of $$155\,	ext{pounds}. $$This value is used to:

Accepted Answer

Provide a standard for anatomical and physiological studies.

Question 9

Which term describes the study of muscle tissue under a microscope?

Accepted Answer

Histology

Question 10

Which of the following best illustrates anatomical variability?

Accepted Answer

Most people match textbook descriptions, but small differences in nerves and blood vessels are common.

Question 11

Which subdivision of physiology would be most relevant for studying how the kidneys filter blood?

Accepted Answer

Renal Physiology

Question 12

A patient is unable to sweat in response to heat. Which component of the negative feedback system is most likely malfunctioning?

Accepted Answer

Effector

Question 13

Which term refers to feeling an organ with your hand during a physical exam?

Accepted Answer

Palpate

Question 14

Which pathway carries information from receptors to the control center in a feedback system?

Accepted Answer

Afferent pathway

Question 15

Which of the following is an example of surface anatomy?

Accepted Answer

Examining veins visible under the skin.

Question 16

Which of the following best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy determines function; physiology studies how body parts work.

Question 17

A medical student is asked to identify the subdivision of anatomy that studies cells. Which is correct?

Accepted Answer

Cytology

Question 18

Which feedback mechanism is most likely to be involved in blood clotting, where the process accelerates until completion?

Accepted Answer

Positive feedback

Question 19

If a control center in the brain receives information about high blood glucose and sends a signal to the pancreas to release insulin, which pathway is being used?

Accepted Answer

Efferent pathway

Question 20

Which of the following best explains why extreme anatomical variations are rarely seen?

Accepted Answer

They usually are not possible to live with.

Introduction to Anatomy & Physiology: Homeostasis, Feedback Systems, and Anatomical Terminology

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