Question 1

Which of the following best illustrates the principle of complementarity of structure and function in human anatomy and physiology?

Accepted Answer

The structure of the heart valves causes blood to flow in only one direction when the heart pumps.

Question 2

A researcher is studying how the shape of the stomach affects the movement of food through the digestive tract. Which approach is the researcher primarily using?

Accepted Answer

Anatomical approach

Question 3

Which of the following best explains why it is important to have some knowledge of anatomy in order to study physiology?

Accepted Answer

Because how something functions (physiology) is directly dependent on its structure (anatomy).

Question 4

Given the following levels of organization: molecule, cell, tissue, organ, organism, which represents the correct hierarchy from smallest to largest?

Accepted Answer

Molecule, Cell, Tissue, Organ, Organism

Question 5

Statins are medications that lower cholesterol by inhibiting the enzyme HMG-CoA reductase in the liver. At what level of organization do statins work most directly?

Accepted Answer

Cellular level

Question 6

A biologist uses a probe to measure the change in pH of subjects' stomach acid before and after eating and compares that data to the amount of heartburn the subject reports experiencing. Is this an anatomical or physiological approach?

Accepted Answer

Physiological approach

Question 7

Which of the following activities would most likely be performed by someone that considers themselves a physiologist?

Accepted Answer

Grow liver cells in cell culture to measure how quickly they metabolize alcohol in different conditions.

Question 8

Which of the following best describes a function of the reference body in anatomy?

Accepted Answer

It provides a standard for learning anatomy, even though there is variation among individuals.

Question 9

Why might textbooks usually present only one blood vessel branching structure, even though anatomical variation is common?

Accepted Answer

To provide a simplified standard for learning, even though real individuals may differ.

Question 10

Which of the following statements about the relationship between anatomy and physiology is correct?

Accepted Answer

Structure exists to perform a function, and function is determined by structure.

Question 11

A histologist and a cytologist are both studying tissue samples. Which of the following best distinguishes their approaches?

Accepted Answer

Histology usually requires intact tissue gathered from a biopsy or dissection, while cytology usually looks at individual cells which can be collected without greatly disturbing the entire tissue.

Question 12

Which of the following is an example of a physiological study rather than an anatomical study?

Accepted Answer

Measuring the rate at which glucose is absorbed from the intestine after a meal.

Question 13

Which of the following best describes the difference between people who lift weights and those who do not, in terms of anatomy and physiology?

Accepted Answer

It is a difference in anatomy, because increased bone thickness and restructuring is a structural change.

Question 14

Which of the following statements is true regarding the levels of organization in the human body?

Accepted Answer

Structure and function relationships exist at all levels of organization.

Question 15

A patient is given a medication that inhibits the enzyme HMG-CoA reductase. Which of the following is the most direct effect of this medication?

Accepted Answer

It lowers overall cholesterol production in the liver.

Question 16

Which of the following best describes why defining 'normal variation' in anatomy can be difficult?

Accepted Answer

Because it is hard to determine if a variation causes a functional problem.

Question 17

Which of the following is the correct order of levels of organization from simplest to most complex?

Accepted Answer

$$	ext{Molecule} ightarrow 	ext{Cell} ightarrow 	ext{Tissue} ightarrow 	ext{Organ} ightarrow 	ext{Organism}$$

Question 18

Which of the following best explains why anatomical variation is a common cause of medical error?

Accepted Answer

Because textbooks often present only one 'standard' arrangement, but real patients may have different anatomical structures.

Question 19

Which of the following is an example of the principle of complementarity of structure and function?

Accepted Answer

Alveoli in the lungs have thin walls to allow efficient gas exchange.

Introduction to Anatomy & Physiology: Structure, Function, and Levels of Organization

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